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Journal articles on the topic 'Nickel content'

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Published: 4 June 2021
Last updated: 1 February 2022

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1

Liu, Xinxin, Yitong Tan, Xinhua Zhang, Qiangqiang Liao, and Zhiqin Wang. "Fabrication and performance evaluation of nickel-rich conductive coating for carbon steel grounding grids in saline-alkali soil solution." Corrosion Reviews 38, no. 3 (May 8, 2020): 263–71. http://dx.doi.org/10.1515/corrrev-2019-0112.

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AbstractA nickel-rich conductive anti-corrosive coating (CACC) was fabricated to improve the corrosion resistance of the carbon steel grounding materials. The coating was tested using surface contact resistance measurement, electrochemical impedance spectroscopy (EIS) and surface characterization. The results indicate that the increase of the nickel powder content in the coating induces its electrical conductivity enhancement; the surface contact resistance is as low as 0.05 Ω/cm2 when the nickel powder content is 20%. The EIS data show that the anti-corrosive performance of the coating with 20% nickel powder content in three soil saline-alkali solutions (mild, moderate and severe) is higher than that with 40% nickel powder content, and the impedance of the coating decreases with the increase of the salt concentration. It is detected that 20% nickel powder content can achieve a good balance between low surface contact resistance and high corrosion resistance of the coating.
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2

Tomovic, V. M., Lj S. Petrovic, M. R. Jokanovic, Z. S. Kevresan, N. R. Dzinic, T. A. Tasic, and P. M. Ikonic. "Nickel levels of liver from ten different pig genetic lines produced in Vojvodina." Biotehnologija u stocarstvu 27, no. 4 (2011): 1793–99. http://dx.doi.org/10.2298/bah1104793t.

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The content of nickel was investigated in the liver of sixty-nine pigs from ten different genetic lines, produced in Vojvodina. Nickel was determined by the flame atomic absorption spectrometry after mineralization by dry ashing. The difference in the nickel content among different genetic lines of pigs was not significant (P > 0.05) in the analyzed liver tissues. Nickel levels ranged from 13.02 to 68.21 ?g/100g with a general average of 26.73 ?g/100g. Average nickel content, found in this study, is in agreement with the contents observed in pig liver in other countries.
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3

Raith, Ludwing, and Klaus Jaeger. "The nickel content of chalk - cause of contact dermatitis?" Contact Dermatitis 14, no. 1 (January 1986): 61. http://dx.doi.org/10.1111/j.1600-0536.1986.tb01155.x.

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4

Yamanoglu, R., E. Karakulak, and M. Zeren. "Mechanical and wear properties of pre-alloyed molybdenum P/M steels with nickel addition." Journal of Mining and Metallurgy, Section B: Metallurgy 48, no. 2 (2012): 251–58. http://dx.doi.org/10.2298/jmmb111128026y.

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The aim of this study is to understand the effect of nickel addition on mechanical and wear properties of molybdenum and copper alloyed P/M steel. Specimens with three different nickel contents were pressed under 400 MPa and sintered at 1120?C for 30 minutes then rapidly cooled. Microstructures and mechanical properties (bending strength, hardness and wear properties) of the sintered specimens were investigated in detail. Metallographical investigations showed that the microstructures of consolidated specimens consist of tempered martensite, bainite, retained austenite and pores. It is also reported that the amount of pores varies depending on the nickel concentration of the alloys. Hardness of the alloys increases with increasing nickel content. Specimens containing 2% nickel showed minimum pore quantity and maximum wear resistance. The wear mechanism changed from abrasive wear at low nickel content to adhesive wear at higher nickel content.
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5

Dai, Shu Juan, and Yao Liu. "The Experiment Study on Making Ultrafine Superfine Nickel Powder by N2H4–KHB Reduction and H2 Reduction." Advanced Materials Research 295-297 (July 2011): 677–80. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.677.

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The N2H4–KHB reduction then CH3OH watering and H2 reduction system was used to make superfine nickel powder by using nickel sulfate as material.The superfine nickel powder of the specific surface area of the nickel powde being 4.24m2/g, spheric shape with grain size 0.5-0.9μm,nickel content being over 99.5%,The toll nichel recovery being over 99.5% was made on the condition of reaction temperature 60°C, reaction time 150-180min,pH 8.0-8.5,[Ni]=1.25M,N2H4/Ni=1.35（mol ratio）,sodium hexametaphosphate of 1.5‰ as additive，the dosage of KHB of 8.37×10-3g/g Ni and washing by carbinol,reducing by H2.
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6

Roventi, G., R. Cecchini, A. Fabrizi, and T. Bellezze. "Electrodeposition of nickel–zinc alloy coatings with high nickel content." Surface and Coatings Technology 276 (August 2015): 1–7. http://dx.doi.org/10.1016/j.surfcoat.2015.06.043.

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7

Husby, Hans, Philip Wagstaff, Mariano Iannuzzi, Roy Johnsen, and Mariano Kappes. "Effect of Nickel on the Hydrogen Stress Cracking Resistance of Ferritic/Pearlitic Low Alloy Steels." Corrosion 74, no. 7 (March 5, 2018): 801–18. http://dx.doi.org/10.5006/2724.

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Nickel additions to low alloy steels improve mechanical and technological properties. However, Part 2 of ISO Standard 15156 limits the nickel content to a maximum of 1 wt% in oil and gas environments containing H2S because of controversial concerns regarding sulfide stress cracking. The objective of this work was to investigate the effect of nickel in solid solution in the ferrite phase on hydrogen stress cracking resistance. Ferritic/pearlitic research-grade low alloy steels with nominal nickel contents of 0, 1, 2, and 3 wt% were tested by the slow strain rate test method with cathodic hydrogen charging to −1.05 VAg/AgCl and −2 VAg/AgCl. No difference in fracture mode or morphology was found between the alloys. However, the plastic elongation ratios and reduction in area ratios decreased with increasing nickel content when tested at −2 VAg/AgCl. The direct and indirect effects of nickel, such as the influence of an increasing fraction of pearlite with increasing nickel content, are discussed.
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8

YAMASHITA, Hiroya, Takeshi YAMAMURA, and Katsutoshi YOSHIMOTO. "Nickel-Tin Alloys with a High Nickel Content Prepared by Electrodeposition." Denki Kagaku oyobi Kogyo Butsuri Kagaku 62, no. 1 (January 5, 1994): 48–55. http://dx.doi.org/10.5796/electrochemistry.62.48.

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9

Zeng, Yuqiao, Chunling Qin, Nobuyuki Nishiyama, and Akihisa Inoue. "New nickel-based bulk metallic glasses with extremely high nickel content." Journal of Alloys and Compounds 489, no. 1 (January 2010): 80–83. http://dx.doi.org/10.1016/j.jallcom.2009.09.016.

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10

Geng, Qiu Ju, and Xue Wei. "Determination of Tin and Nickel Content in Pyrophosphate Tin-Nickel Alloy Plating Bath." Advanced Materials Research 233-235 (May 2011): 214–18. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.214.

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Tin and nickel ions are in stable complexing form in Pyrophosphate tin-nickel alloy plating bath, this paper uses back-titration of Zn2+ standard solution to determine total amount of tin and nickel ions, and spectrophotometry to determine content of nickel ions in the bath to study interference and elimination methods of co-existing components. The results show that: eliminate the interference of pyrophosphate by heating the solution to hydrolyse and mask Sn4+ and Fe3+ effectively with triethanolamine, the total measurement error is about 0.91%, standard deviation is 0.0141; The recovery of determination for nickel ion content is 99.13%, and standard deviation is 0.0180; The method i-s simple, fast and is able to meet the analytical requirements for controlling the plating quality.
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11

Kim, Yoon Young, Mi-Yeon Kim, Young Min Park, Hyung Ok Kim, Cjae Sook Koh, and Hae Kwang Lee. "Evaluating the Nickel Content in Metal Alloys and the Threshold for Nickel-Induced Allergic Contact Dermatitis." Journal of Korean Medical Science 23, no. 2 (2008): 315. http://dx.doi.org/10.3346/jkms.2008.23.2.315.

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12

Goh, C. L., S. F. Kwok, and S. L. Gan. "Cobalt and nickel content of Asian cements." Contact Dermatitis 15, no. 3 (August 1986): 169–72. http://dx.doi.org/10.1111/j.1600-0536.1986.tb01319.x.

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13

Peters, Kurt, Torkil Menne, and Benie Gammelgaard. "Nickel content of fingernails from hospital cleaners." Contact Dermatitis 25, no. 2 (August 1991): 136. http://dx.doi.org/10.1111/j.1600-0536.1991.tb01813.x.

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14

Nakada, Tokio, Jurij J. Hostynek, and Howard I. Maibach. "Nickel content of standard patch test materials." Contact Dermatitis 39, no. 2 (August 1998): 68–70. http://dx.doi.org/10.1111/j.1600-0536.1998.tb05835.x.

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15

Christians, Stefan, and Heinrich Kaltwasser. "Nickel-content of urease from Bacillus pasteurii." Archives of Microbiology 145, no. 1 (June 1986): 51–55. http://dx.doi.org/10.1007/bf00413026.

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16

Febriana, Eni, Agus Budi Prasetyo, Wahyu Mayangsari, Januar Irawan, Muhammad Ikhwanul Hakim, Tiffany Ary Prakasa, Andinnie Juniarsih, Ariyo Suharyanto, Iwan Setiawan, and Rudi Subagja. "Effect of Sulfur Addition to Nickel Recovery of Laterite Ore." Jurnal Kimia Sains dan Aplikasi 23, no. 1 (November 17, 2019): 14–20. http://dx.doi.org/10.14710/jksa.23.1.14-20.

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This research studied the effect of the addition of sulfur on the reduction process of limonite nickel laterite ore with Ni content of 1.11wt% and Fe 48.7wt%. The stages of the research included the characterization of ore materials, preparation, mixing, pelleting, reduction, and magnetic separation. The reduction stage was carried out with several experimental variables, which were the time and temperature of the reduction, as well as the addition of reducing agents and sulfur additives. Products from the reduction process were separated magnetically, and the concentrate was then analyzed using XRD and AAS. The results showed that the addition of sulfur additives to a certain amount could cause the formation of FeS and Fe-silicate, which could increase the content and percentage of nickel recovery by suppressing the metallization of iron. The optimum conditions were obtained in the reduction process with a temperature of 1100°C for 60 minutes, with the addition of graphite reductant and sulfur additives each of 7% of the sample weight. Ni contents in the reduction product concentrate obtained were 1.98% with 96% gain, while Fe could be reduced to 29.2% with an extraction percentage of 76.1%.
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17

Jasinski, Piotr, Toshio Suzuki, Vladimir Petrovsky, and Harlan U. Anderson. "Nanocomposite Nickel Ceria Cermet with Low Nickel Content for Anode-Supported SOFCs." Electrochemical and Solid-State Letters 8, no. 4 (2005): A219. http://dx.doi.org/10.1149/1.1869153.

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18

Osinkin, D. A., and V. D. Zhuravlev. "Nickel–Ceramic Electrodes with High Nickel Content for Solid Electrolyte Electrochemical Devices." Russian Journal of Applied Chemistry 93, no. 2 (February 2020): 299–304. http://dx.doi.org/10.1134/s1070427220020202.

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19

Tomovic, Vladimir, Ljiljana Petrovic, Zarko Kevresan, Natalija Dzinic, and Marija Jokanovic. "Determination of nickel content in the semimembranosus muscle of pigs produced in Vojvodina." Acta Periodica Technologica, no. 41 (2010): 95–102. http://dx.doi.org/10.2298/apt1041095t.

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The content of nickel was investigated in the M. semimembranosus of sixty-nine pigs from ten different genetic lines produced in Vojvodina. Nickel was determined by flame atomic absorption spectrometry after mineralization by dry ashing. The difference in the nickel content in the analyzed muscle tissues among different genetic lines of pigs was not significant (P > 0.05). Nickel levels ranged from 12.93 to 80.18 ?g/100 g, with a general average of 32.41 ?g/100 g. The average level of nickel was found to be higher than the levels observed in pork in some developed countries.
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20

AL-SHAKARCHI, Hiba Khaleel Saeed, and Yousef Jabbar AL-SHAHERY. "EVALUATION OF ARTHROSPIRA SP. GROWTH ABILITY ON HEAVY METAL SALTS AND THEIR EFFECT ON SOME CELLULAR COMPONENTS." Periódico Tchê Química 17, no. 34 (March 20, 2020): 667–77. http://dx.doi.org/10.52571/ptq.v17.n34.2020.691_p34_pgs_667_677.pdf.

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rthrospira sp. is an aquatic and photosynthetic microorganism that is extensively employed as a food supplement due to its rich contents of nutrients, proteins, and carbohydrates. In this study, a local strain of cyanobacterium of the genus Arthrospira was isolated from the Iraqi soil, in the region of Mosul city, using the Chu’s Medium No. 10. The growth rate, as well as the effects on biomass and cellular component contents of proteins, carbohydrates, and chlorophyll of this strain, were evaluated on the molasses medium alone or supplemented with iron, copper, nickel, cadmium and cobalt salts after fifteen days of incubation. The results showed that the best growth rate (1.09 OD), the highest value of biomass (120.0 mg/l), proteins content (297.2 mg/l), chlorophyll content (14.9 mg/l) and carbohydrates content (400.0 mg/l) of Arthrospira sp. was achieved after fifteen days of incubation. Generally, it was observed that adding iron, copper, nickel, cadmium, and cobalt salts into the molasses medium increased the contents of biomass, proteins, and carbohydrates of Arthrospira sp.. It was noticed that the highest biomass concentration (1960 mg/l) was obtained when Arthrospira sp. grown on molasses medium supplemented with nickel. Also, none of the metal salts added to the molasses medium increased the protein content of Arthrospira sp.. Conversely, adding copper, nickel, and cobalt to the medium showed an adverse effect on the protein content. It was shown that adding iron metal salts into the molasses medium increased the carbohydrates and the chlorophyll contents of Arthrospira sp.. These results suggest that Arthrospira sp. can be utilized for the bioremediation of heavy metals pollution in the environment and industrial sites.
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21

Matusiak, Jolanta, and Andrzej Wyciślik. "Determination of Nickel in Welding Fume by Gravimetric Method Using Dimethylglyoxime." Solid State Phenomena 226 (January 2015): 7–10. http://dx.doi.org/10.4028/www.scientific.net/ssp.226.7.

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Welding fume emitted while welding stainless chromium-nickel steels contains mainly nickel oxides (NiO, NiO2 and Ni2O3). Welding in the inert gas shielding as well as plasma and laser cutting of parent materials of a high content of nickel ranks among the welding processes characterised by the highest concentrations of nickel oxides in welding fume. The predicted content of this element in the mass % range of 0.7 to 6% has been adopted as a criterion for the selection of the analytical method of the determining nickel content in the welding fume. Determination of nickel is based on dissolution of the sample in a mixture of acids, separation of nickel in the form of solid dimethylglyoxime nickel (II) and gravimetric determination. The adopted method of nickel determination in the welding fume proved to be an effective and inexpensive solution.
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22

Tan, Li Rong, Yan Hui Wang, Jian Bing Zang, and Jin Hui Zhang. "Electroplating Nickel-Iron Alloy on the Diamond Surface." Key Engineering Materials 416 (September 2009): 164–67. http://dx.doi.org/10.4028/www.scientific.net/kem.416.164.

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Ni-coated diamond grits are widely used in resin-bonding diamond tools for that nickel coating could not only increase the surface roughness, but also improve retention of the diamond in the bond. However coating nickel on diamond surface is too expensive for the high price of metal nickel. In order to obtain cost-effective coating, barrel-plating method was used to coat nickel-iron alloy on the diamond surface in this paper. Nickel-iron alloy coating with iron content of 13.62~17.25wt% has been obtained and the iron content in the alloy coating can be adjusted by the content of Fe2+ in the electrolyte. Compared with the uncoated-diamond, the compressive fracture strength (CFS) of coated diamond tested by single grit method has a distinct increase and it becomes higher as the iron content increases in the coating. The coating possesses ferromagnetism and the magnetic intensity of alloy coating with high iron content is larger than that with low iron content.
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23

Liu, Zhi Yong, Xin Lai He, Ji Qing Chen, Shan Wu Yang, Bang Wen Chen, Min Hu, and Wen Liang. "Alloying Element Nickel Influence on Microstructure and Properties of Weathering Steels." Advanced Materials Research 295-297 (July 2011): 1436–40. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.1436.

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By testing the mechanical properties, microstructure observation, accelerated corrosion test, the effect of alloying element nickel on microstructure and properties of weathering steels was studied. The results showed that nickel content from 0 to 0.44%（mass percent）have little influence on microstructure and mechanical properties of weathering steels.The corrosion resistance enhanced with increasing nickel content, and nickel content of 0.11% or more had significant enfluence on corrosion resistant performance of weathering steels.
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24

Bobkova, V. V., S. N. Konovalov, and E. K. Sashko. "Comparative evaluation of adaptation potential of black currant to uptake Ni in sod-podzolic soil." Plant Biology and Horticulture: theory, innovation, no. 150 (September 30, 2019): 44–49. http://dx.doi.org/10.36305/2019-1-150-44-49.

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The paper analyzes the adaptive abilities of black currant cultivars of plants for the assimilation of nickel from highly cultivated sod-podzolic soils containing 10.7-14.1 mg / kg of fluent nickel. Plantings were monitored at experimental plantings of ARHIBAN (Moscow region) on 9 black currant cultivars: Oryol Serenade, Belarusskaja sladkaja, Zagadka, Vologda, Triton, Biryulevskaya, Titania, Orlowsky waltz, Exotica. The agrochemical properties of the soil, the content of fluent nickel in the soil, and its content in the fruits of black currant plants were determined. Based on the analysis, the coefficients of nickel assimilation by black currant plants were calculated and statistical dependencies of its accumulation indicators on agrochemical properties of sod-podzolic soils at different depths of the root layer were determined. According to the results of research, regression dependences of the accumulation of nickel in black currant fruits on the indicators of the agrochemical properties of the soil and the content in the soil of fluent nickel were constructed. It was established that the nickel content in black currant fruits primarily depended on the acidity of the soil, on the content in the soil of fluent nickel, alkaline hydrolysable nitrogen and fluent potassium. Black currant cultivars Belarusskaja sladkaja, Vologda, Triton, Biryulevskaya, Titania were more resistant to soil pollution with nickel.
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25

Yang, Rui Song, Qing Shan Fu, Ming Tian Li, and Yong Zhong Jin. "The Effect of Temperature on the NiCu Coating Prepared by Electroplating." Advanced Materials Research 910 (March 2014): 11–14. http://dx.doi.org/10.4028/www.scientific.net/amr.910.11.

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In this paper, the NiCu alloy coatings were electroplated on the 304 stainless steel coupon. The XRD was used to identify the phase structure of the as-prepared products. The SEM and EDS were used to observe the surface morphology of the as-prepared coatings and the atomic composition of the as-prepared coatings, respectively. The influences of the temperature on the as-plated NiCu coatings are systematically researched. It was found that the lower of the temperature, the more compact of the coatings. With the increasing of the temperatures, the content of the nickel decrease and that of the copper increase. When the temperature is lower than 35 °C the contents of nickel and copper do not vary apparently. When the temperature is larger than 40 °C, there are significant increases of the copper content while apparent decreases of the nickel content.
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26

Li, Hong You, Ming Ming Yu, Yi Wang, and Mao Lin Shi. "Influence of Process Parameters on Pulse Electroforming of Nickel-Rich Nickel-Cobalt Alloys from Sulfamate Electrolyte." Advanced Materials Research 641-642 (January 2013): 440–43. http://dx.doi.org/10.4028/www.scientific.net/amr.641-642.440.

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Nickel-cobalt alloys have a wide range of industrial applications because of high strength, good corrosion resistance, heat-conductive, etc. As an example, they are used in the electroforming of moulds for die-casting and plastics and in electrotyping. In this paper, experiments on pulse electroforming of nickel-rich nickel-cobalt alloys were studied on SUS304 substrates from sulfamate electrolyte with different average current density, pulse frequency, duty cycle and different bath temperature. It is clearly observed in the nickel-rich deposits that effect of cobalt content gradually increases as the Co2+/Ni2+ concentration ratio and duty cycle increasing; The Co content seems to hardly change when pulse frequency changed from 500 Hz to 1000 Hz; The Co content decreases as current density increasing. High Co content and smooth surface topography can be obtained by reducing current density, increasing bath temperature and pulse duty cycle.
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27

Kuziemska, Beata, Paulina Klej, and Joanna Trębicka. "Effect of different nickel soil contents on cock’s-foot yield and nitrogen, phosphorus and potassium contents." Ochrona Srodowiska i Zasobów Naturalnych 27, no. 1 (March 1, 2016): 15–21. http://dx.doi.org/10.1515/oszn-2016-0005.

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AbstractThis study assessed the influence of liming and waste organic materials on the yield and nitrogen, phosphorus and potassium contents in cock’s-foot (Dactylis glomerata L.) grown on nickel-contaminated soil in the third year of a pot culture experiment. In the experiment, the following factors were taken into consideration: (1) nickel soil contamination (0, 75, 150 and 225 mg Ni·kg−1 of soil); (2) liming (0 Ca and Ca according to 1 Hh of soil) and (3) organic materials (no waste organic materials added, brown coal from a coal mine in Turów and rye straw). Introducing nickel into the soil, regardless of its amount, caused a significant decrease in the total yield of cock’s-foot and increased the nitrogen and potassium contents. Liming caused a significant increase in the yield of cock’s-foot and decrease its potassium content, but it did not clearly differentiate the nitrogen and phosphorus content. The used organic materials (straw and brown coal) caused a decrease in the phosphorus content in the grass biomass.
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28

Kasper-Sonnenberg, Monika, Dorothee Sugiri, Sabine Wurzler, Ulrich Ranft, Heinrich Dickel, Jürgen Wittsiepe, Jürgen Hölzer, et al. "Prevalence of nickel sensitization and urinary nickel content of children are increased by nickel in ambient air." Environmental Research 111, no. 2 (February 2011): 266–73. http://dx.doi.org/10.1016/j.envres.2010.11.006.

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29

BYBORDI, Ahmad, and Mohammad Nabi GHEIBI. "Growth and Chlorophyll Content of Canola Plants Supplied with Urea and Ammonium Nitrate in Response to Various Nickel Levels." Notulae Scientia Biologicae 1, no. 1 (December 7, 2009): 53–58. http://dx.doi.org/10.15835/nsb113443.

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Both the beneficial and the adverse effects of various nickel level supplements on growth and chlorophyll content of canola plants were evaluated while either urea or ammonium nitrate was supplied as the sole N source in the nutrient solutions. This study was arranged in completely randomized with three replications. Treatments included nutrient solution cultures containing urea and ammonium nitrate at the rate of 84 mg N L-1 separately as nitrogen sources with four nickel levels as NiSO4.6H2O at the rates of 0, 0.01, 0.05 and 0.1 mg Ni L-1. Plants were allowed to grow for 6 weeks then leaves chlorophyll content and shoots and roots fresh and dry weight were determined. Both plant growth and leaves chlorophyll content of the urea-fed plants increased significantly with the increase in nickel content up to 0.1 mg Ni L-1. However, root fresh and dry weight increased up to 0.01 mg Ni L-1 and started to decrease with further increase in solutions nickel content. Nickel did not affect these parameters with plants supplied with ammonium nitrate significantly. In these plants, the optimum nickel level for shoot growth and leaves chlorophyll content was 0.05 mg L-1 and for root fresh and dry weight was 0.01 mg Ni L-1. Further increase in Ni concentration reduced growth. As a whole, plants received urea plus nickel performed better than those received ammonium nitrate plus nickel.
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30

Belhadi, Akila, Souhila Boumaza, Amar Djadoun, Mohamed Trari, and Ouiza Cherifi. "Methane Steam Reforming on Supported Nickel, Effect of Nickel Content for Product Hydrogen." Open Journal of Physical Chemistry 06, no. 02 (2016): 34–41. http://dx.doi.org/10.4236/ojpc.2016.62003.

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31

Li, Yan Zheng, Zhong De Shan, Jun Zhao, and Jing Yun Xiong. "Study on Cutting Performance and Wear Mechanisms of Graded Ceramic Tool." Applied Mechanics and Materials 490-491 (January 2014): 358–61. http://dx.doi.org/10.4028/www.scientific.net/amm.490-491.358.

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In this paper, based on the experiments of high speed dry cutting nickel alloyed ductile iron with different nickel contents by graded ceramic tool, the cutting performance and wear mechanisms of graded ceramic tool were investigated. Results reveal that with the increase of cutting speed and nickel content the wear of graded ceramic tool is increased, wear mechanisms are transformated spalling and cohesive wear from abrasive wear, and chip shapes are turned into long arc segment from short segment.
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32

Pangaribuan, Rafaeldi Harlin, Juan Patrick, Agus Budi Prasetyo, Ahmad Maksum, Badrul Munir, and Johny Wahyuadi Soedarsono. "The effect of NaOH (natrium hydroxide) to slag nickel pyrometallurgy in different temperature and additive ratio." E3S Web of Conferences 67 (2018): 03052. http://dx.doi.org/10.1051/e3sconf/20186703052.

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Nickel slag is one of the output from nickel ore smelting. In Indonesia itself, further utilization of valuable elements in it is needed to be processed. Nickel slag also has Fayalite (Fe2SiO4) content where nickel and copper are spread evenly on the iron matrix silica which then complicate the process of increasing nickel and copper content. The addition of Sodium Carbonate (Naoh) is used as a silica binder and as an alternative way to increase nickel and copper content. In this research, pyrometallurgy is done by coal as a reductor in 800°C, 900°C and 1000°C operating temperature and ratio between nickel slag and additive equal to 1:1, 1:2, and 2:1. Based on this study, it is obtained that with the increasing of temperature without additive, there is still found the presence of silica in a form of Fe-rich Forsterite (FeMgSiO4) and Olivine (NiMgSiO4). Whereas with the presence of additive in slag nickel pyrometallurgy with a different temperature and ratio, it is seen that there is a phase formation of Sdoium Magnesiosilicate (Na2MgSiO4), Magnesium Oxide (MgO) and Wustite (FeO) which proved the binding of silica and has liberate iron that helps the process of increasing nickel and copper content.
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33

Adachi, Shinichiro, Motoo Egawa, Takuto Yamaguchi, and Nobuhiro Ueda. "Low-Temperature Plasma Nitriding for Austenitic Stainless Steel Layers with Various Nickel Contents Fabricated via Direct Laser Metal Deposition." Coatings 10, no. 4 (April 7, 2020): 365. http://dx.doi.org/10.3390/coatings10040365.

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In this study, low-temperature plasma nitriding is applied to austenitic stainless steels at temperatures below 450 °C. This enhances the wear resistance of the steels with maintaining corrosion resistance, by producing expanded austenite (known as the S-phase), which dissolves excessive nitrogen. Austenitic stainless steels contain nickel, which has the potential to play an important role in the formation and properties of the S-phase. In this experiment, austenitic stainless steel layers with different nickel contents were processed using direct laser metal deposition, and subsequently treated using low-temperature plasma nitriding. As a result, the stainless steel layers with high nickel contents formed the S-phase, similar to the AISI 316L stainless steel. The thickness and Vickers hardness of the S-phase layers varied with respect to the nickel contents. Due to lesser chromium atoms binding to nitrogen, the chromium content relatively decreased. Moreover, there was no evident change in the wear and corrosion resistances due to the nickel contents.
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Hernández-Méndez, F., A. Altamirano-Torres, José G. Miranda-Hernández, Eduardo Térres-Rojas, and Enrique Rocha-Rangel. "Effect of Nickel Addition on Microstructure and Mechanical Properties of Aluminum-Based Alloys." Materials Science Forum 691 (June 2011): 10–14. http://dx.doi.org/10.4028/www.scientific.net/msf.691.10.

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In this work a comparative study between microstructure and mechanical properties of aluminum-nickel alloys with different contents of nickel was carried out. Alloys were produced by powders metallurgy. Characterization results indicates that the microstructure of the aluminum-nickel alloys present a thin and homogeneous distribution of an intermetallic compound in the aluminum’s matrix, identified as Al3Ni. Furthermore, it was find out that the amount of intermetallic Al3Ni increase as the nickel content in the alloy rises. Regarding the mechanical properties evaluated; it was establishes that the hardness, compression and flexion resistances also were improved due to the presence of the intermetallic compound.
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35

Liu, Qing Bao, Zhi You Hu, Xiang Jun Liu, and Chang Qiao Yang. "Study on Preparation and Properties of Resource-Saving Nitrogenous Stainless Steel." Materials Science Forum 996 (June 2020): 191–99. http://dx.doi.org/10.4028/www.scientific.net/msf.996.191.

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In order to alleviate the shortage of global nickel resources, it is imperative to develop low nickel stainless steel. This paper presents a novel approach based on increasing nitrogen and reducing nickel for smelting economical stainless steel. Taking 06Cr19Ni10 stainless steel as the object, the test steels with different nitrogen and nickel content were smelted using vacuum induction furnace (ZG-0.01) under the laboratory conditions, and the effects of alloy content on microstructures, mechanical properties and corrosion properties of the economical stainless steel were investigated. The results show that the microstructure of the tested steel which nitrogen content 0~0.28% and nickel content 5.98~9.63% is still the single austenitic, and the grain size decreases as the nitrogen content increases. Nitrogen deteriorates the impact toughness of the tested steel, and the room temperature impact absorption energy is reduced from 267 J at the nitrogen content of 0 to 228 J at nitrogen content of 0.28%. Rockwell hardness, tensile strength and yield strength increase with the increase of nitrogen content. When the nitrogen content is 0.28%, the optimum mechanical properties of 06Cr19Ni10 steel are obtained. The Rockwell hardness is 95.4 HRB, the tensile strength is 814 MPa, the yield strength is 437 MPa, and the elongation after fracture is 52.5%. The degree of intergranular corrosion of the tested steel is reduced significantly with the increase of nitrogen content, from 0.023 μm to 0.008 μm. The experimental data prove that the composition design concept of increasing nitrogen and reducing nickel is feasible for smelting economical stainless steel.
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36

Li, Zhiying, Nianbing Zhang, and Liangying Wen. "Effect of Nickel Content on Carbon Anode Reactivity." Asian Journal of Chemistry 28, no. 8 (2016): 1703–7. http://dx.doi.org/10.14233/ajchem.2016.19794.

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37

Kollmeier, H., C. Witting, J. Seemann, P. Wittig, and R. Rothe. "Increased chromium and nickel content in lung tissue." Journal of Cancer Research and Clinical Oncology 110, no. 2 (September 1985): 173–76. http://dx.doi.org/10.1007/bf00402735.

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38

Galimov, R. A., V. V. Abushaeva, L. B. Krivonozhkina, and G. V. Romanov. "Determination of content of nickel porphyrins in asphaltenes." Chemistry and Technology of Fuels and Oils 30, no. 1 (January 1994): 46–48. http://dx.doi.org/10.1007/bf00727211.

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39

Canevari, Gerard P., and Robert J. Fiocco. "CRUDE OIL VANADIUM AND NICKEL CONTENT CAN PREDICT EMULSIFICATION TENDENCY." International Oil Spill Conference Proceedings 1997, no. 1 (April 1, 1997): 309–14. http://dx.doi.org/10.7901/2169-3358-1997-1-309.

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ABSTRACT Most crude oils in contact with water form water-in-oil emulsions. The stability of these emulsions will vary. When spilled crude oil emulsifies, it becomes viscous and expands in volume, becoming more difficult to recover, chemically disperse, or ignite. The ability to better predict the emulsion-forming behavior of a specific crude oil would greatly aid oil spill response decisions. The problem is complex because of the various stabilizing mechanisms. This study identified surface active agents, that is, porphyrins, as key compounds that contribute to the emulsification of crude oil, particularly fresh crude oil. This research not only identified these metal-porphyrin agents but also determined the mechanism for their emulsion stabilization. These porphyrin complexes are known to be associated with the metals vanadium and nickel. Because the vanadium and nickel levels of a specific crude oil are available from its published assay, they can be used to predict the emulsification of oil early in the spill. The study has also established that a concentration level of over 15 ppm of vanadium and nickel is required to form a stable emulsion for fresh crude oil. It should be stressed that the vanadium-nickel index applies to fresh crude oil. A second emulsification mechanism was also observed during this research that was related to the weathering of the crude oil. Extensive data to support this mechanism are presented and may provide a valuable tool for oil spill response.
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40

Symanowicz, Barbara, Stanisław Kalembasa, and Mateusz Niedbała. "Effect of phosphorus and potassium fertilisation on the contents and chromium and nickel uptake by goat’s rue (Galega orientalis Lam.) / Wpływ nawożenia fosforem i potasem na zawartość i pobranie chromu i niklu przez rutwicę wschodnią (Galega orientalis Lam.)." Ochrona Srodowiska i Zasobów Naturalnych 24, no. 3 (September 1, 2013): 59–62. http://dx.doi.org/10.2478/oszn-2013-0033.

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Abstract The paper presents the changes in chromium and nickel content in goat’s rue biomass cultivated in the years 2005-2007. Field test was carried out on the experimental field belonging to the University of Natural Sciences and Humanities in Siedlce. The tests included six objects with constant phosphorus fertilisation and differentiated potassium fertilisation. During each year of the tests, three cuts of the test plant in budding stage were harvested. Total Cr and Ni content in the plant and soil was determined using inductively coupled plasma-atomic emission spectrometer. The uptake of the elements being analysed with the crop of dry mass of the test plant was calculated. Phosphorus and potassium fertilisation had significant influence on the increase in chromium and nickel content in goat’s rue biomass. The highest content of chromium was determined on P50 object and of nickel on P50K150 object. The lowest content of Cr and N was determined in the test plant cultivated on control objects. The highest content of chromium and nickel was found in soil taken from the control object. The highest uptake with crop was observed for goat’s rue fertilised with P50 dose and of nickel with P50K150 dose.
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41

Saakian, Alexander. "Accumulation of cobalt and nickel in soil, litter, and organs of Scots pine in the conditions of the Yelets industrial center." АгроЭкоИнфо 2, no. 44 (April 22, 2021): 24. http://dx.doi.org/10.51419/20212224.

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Information was obtained on the content of cobalt and nickel in soil, litter, and organs of Scots pine in the conditions of the Yelets industrial center. It was found that, under pollution conditions, the content of cobalt and nickel in vegetative organs, soil, litter is higher than the control values. Moreover, their content increases both during the growing season and with an increase in the age of the pine (needles and shoots). There is an uneven accumulation of metal in various organs of Scots pine. A high level of correlation was noted: between the content of cobalt in the soil and needles of the 1st year, shoots of the 1st year - PP No. 1 (r = 0.86; r = 0.78); between the content of cobalt in the soil and bark, litter - PP No. 2 (r = 0.99; r = 0.96); between the nickel content in the soil and needles of the 1st year, needles of the 2nd year, shoots of the 1st year - PP # 1 (r = 0.84; r = 0.78; r = 0.80); between the nickel content in soil and needles of the 1st year, shoots of the 1st year, bark, litter - PP No. 2 (r = 0.92; r = 0.89; r = 0.78; r = 0.87). Keywords: COBALT, NICKEL, SCOTS PINE, NEEDLES, SHOOTS, SOIL LITTER
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42

Tramontana, Marta, Leonardo Bianchi, Katharina Hansel, Daniela Agostinelli, and Luca Stingeni. "Nickel Allergy: Epidemiology, Pathomechanism, Clinical Patterns, Treatment and Prevention Programs." Endocrine, Metabolic & Immune Disorders - Drug Targets 20, no. 7 (September 9, 2020): 992–1002. http://dx.doi.org/10.2174/1871530320666200128141900.

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Nickel is the most common cause of contact allergy in the general population and the most frequently detected allergen in patients patch tested for suspected allergic contact dermatitis (ACD). ACD from nickel is a typical type IV hypersensitivity. Nickel allergy is mostly caused by nonoccupational exposure, such as jewelry and clothing decorations, metal tools, medical devices (mainly orthopedic and orthodontic implants, cardiovascular prosthesis), eyeglasses, utensils, keys, pigment for paint, cosmetics, and food (mainly legumes, chocolate, salmon, peanuts). Occupational exposure can involve several workers (mechanics, metalworkers, platers, hairdressers, jewelers, workers in the constructions and electronic industries), classically involving hands and forearms. The classic clinical pattern of ACD caused by nickel is characterized by eczematous dermatitis involving the sites of direct contact with the metal. Non-eczematous-patterns are reported, including lichenoid dermatitis, granuloma annulare, vitiligo-like lesions, dyshidrosiform dermatitis, and vasculitis. In the case of systemic exposure to nickel, sensitized patients could develop systemic contact dermatitis. Patch testing represents the gold standard for the diagnosis of ACD from nickel. Treatment includes avoidance of contact with products containing nickel and the patient’s education about the possible use of alternative products. A recent EU nickel directive, regulating the content and release of nickel from products, has caused a decrease of nickel contact allergy in some European countries. Nickel allergy is a relevant issue of public health with significant personal, social, and economic impact. This review summarizes epidemiology, pathomechanism, clinical patterns, treatment, and prevention programs.
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43

Antico, Andrea, and Roberto Soana. "Nickel Sensitization and Dietary Nickel are a Substantial Cause of Symptoms Provocation in Patients with Chronic Allergic-Like Dermatitis Syndromes." Allergy & Rhinology 6, no. 1 (January 2015): ar.2015.6.0109. http://dx.doi.org/10.2500/ar.2015.6.0109.

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Data in literature seem to show that, in patients with contact allergic dermatitis, dietary nickel might be a cause of systemic dermatitis, but little information exists in literature about the role of nickel sensitization and dietary nickel in patients with allergic-like chronic dermatitis syndromes. The prevalence of nickel sensitization in patients with chronic allergic-like, non-IgE-mediated skin diseases, and the possible impact of dietary nickel on symptom provocation and persistence has been assessed in the present retrospective study on a case series of 1726 patients referred to our allergy unit for chronic allergic-like skin diseases. IgE-mediated pathogenesis and other differential diagnoses excluded, patients were patch tested. Nickel-positive patients underwent an elimination diet and double-blind placebo-controlled nickel challenge (DBPCNC) test. A total of 339 (20%) tested nickel-positive. Fifty-two patients (15%) recovered by avoiding sources of nickel contact and 29 (10%) dropped out. Out of the remaining nickel-sensitized patients, 277 (80%) achieved complete or near complete recovery with low-nickel content diet, and 185 of them (89%) were positive to DBPCNC. We conclude that nickel sensitization and dietary nickel seem to be the chief trigger for provocation and persistence of symptoms in an important part (~11%) of patients with chronic allergic-like dermatitis syndromes.
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44

Abdul, Fakhreza, Sungging Pintowantoro, and Ari Maulidani. "Analysis the Effect of Charcoal Mass Variation to Ni Content, Sinter Strength and Yield on Sintering Process of Limonitic Laterite Nickel Ore." Key Engineering Materials 867 (October 2020): 25–31. http://dx.doi.org/10.4028/www.scientific.net/kem.867.25.

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The depletion of sulfide nickel ore and the growing of stainless steel demand each year cause the use of low-grade laterite nickel ore continues to increase. Due to very low nickel content, there is no optimal process to extract them. One of the alternative processes being developed now is the sintering-blast furnace process which produces Nickel Pig Iron (NPI). This research was conducted by sintering limonitic laterite nickel ore using charcoal as fuel and limestone as a flux. This research aims to analyze the effect of charcoal mass variation on Ni content, sinter strength, and the yield on the sintering process of limonitic laterite nickel ore. Charcoal and limestone demand calculated using energy balance and mass balance, then varied charcoal mass to feed material. Feed materials are fed in the furnace, heated at a temperature of 1200oC with 4 hours holding time. Next, the sinter yield was calculated. EDX, XRD, and Drop tests were also performed to determine Ni content, sinter compounds, and strength. The highest Ni content was 3.66% which was obtained by adding 9.9 kg charcoal. The highest sinter strength and yield also obtained by adding 9.9 kg charcoal (72.30% and 86.44%, respectively). Mayor phases which formed on sinter with 9.9 kg charcoal addition is nickel-iron oxide.
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45

Djordjevic, Aleksandar. "Mobile nickel content in calcareous black soils of Rajac." Journal of Agricultural Sciences, Belgrade 47, no. 1 (2002): 29–35. http://dx.doi.org/10.2298/jas0201029d.

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A description of mobile Ni contents in various subtypes of calcareous black soils from the area of the mountain massif of Rajac, is given in the present paper. A hundred soil samples were analysed in all, originating from four subtypes of calcareous black soil (organogenic, organo-mineral, brownized and loessivized black soils). The extraction of mobile Ni was carried out with 1.0 N HCl and its content was determined by atomic absorption spectrophotometry. The obtained results indicate that mobile Ni content in the investigated soils varies within a wide range, from 5.0 to 251.3 mg/kg that it is very seldom (only in 3% of the investigated samples) within the range from 5 to 7 mg/kg, that in over 90% of the 100 investigated samples it is higher than 10 mg/kg, and in almost 3/5 of the samples it is higher than 20 mg/kg. Calcareous black soils of Rajac massif have much higher mobile Ni content than previously investigated black soils from calcareous massif of Rtanj, which is, by all means, only partly due to their more severe dealkalization and acidification. In addition, here is undoubtedly apparent the influence of the geological substrate, i.e. of serpentine rocks that border the calcareous massif of Rajac.
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46

Patrick, Juan, Agus Budi Prasetyo, Badrul Munir, Ahmad Maksum, and Johny Wahyuadi Soedarsono. "The effect of addition of sodium sulphate (Na2SO4) to nickel slag pyrometallurgical process with temperature and additives ratio as variables." E3S Web of Conferences 67 (2018): 03053. http://dx.doi.org/10.1051/e3sconf/20186703053.

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Nickel industry is one of the most strategic industries because its widely used. Nickel slag as a by-product of nickel processing presents the potential for improving process efficiency. In this study aim to determine the effect of the addition of sodium sulfate additives and also the temperature in the reduction process of nickel slag. The research was preceded by preparation of nickel slag samples with crushing and sieving up to 200 mesh. The nickel slag is then reduced at 800°C, 900°C and 1000°C temperature without adding sodium sulfate and by adding sodium sulfate with 1 hour holding time. Furthermore, the results of the reduction is done XRD and AAS testing to see changes in the content of elements and compounds in nickel slag that has been tested. The results of the study explain that the content of the dominant impurities which is in the form of SiO2 decreases as the temperature of the reduction and iron from Fe-rich Forsterite compounds will be liberated and will bind to sulfur derived from sodium sulfate to form troilite (FeS). This results in an increasing content of valuable minerals present in the nickel slag.
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Tseng, Yao-Hsuan, and Bo-Kai Huang. "Photocatalytic Degradation of Using Ni-Containing TiO2." International Journal of Photoenergy 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/832180.

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The nickel-containing titania was synthesized and employed in the photomineralization of . A nickel-modified titania photocatalyst was prepared by photodeposition method with using Degussa-P25 TiO2particle and nickel chloride as raw materials, respectively. The physical analyses were carried out using X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), transmittance electron microscope (TEM), and photoluminescence spectroscopy (PL), to observe changes in particles following nickel modification. The results showed that Ni does not enter into the crystal lattice and is dispersed onto the surface uniformly. Ni improved the intensity of PL spectra with an appropriate Ni content on the surface. The modified titanium dioxide with 0.1 mol% of nickel exhibited two times the -removal activity of bare under ultraviolet illumination. The nickel content in this photodeposition process plays an important role in affinity to molecules, recombination rate of electron-hole pair, and content of active site on the surface and therefore affects the optical and photocatalytic properties.
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48

Siripongtana, Watsada, and Rungsinee Canyook. "Influence of Nickel on the Microstructure and Mechanical Properties of Nodular Cast Iron." Materials Science Forum 1023 (March 2021): 61–66. http://dx.doi.org/10.4028/www.scientific.net/msf.1023.61.

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This research investigates the nickel content added by 1.1wt%, 2.2wt%, 3.7wt% and 4.5wt% on the microstructure and mechanical properties in the nodular cast iron. The results demonstrate that the microstructure of nickel addition consists of nodule graphite, ferrite and pearlite phase while nickel was added to 4.5 wt% the microstructure becomes ferrite transform to fully pearlite phase. In addition the ductile iron has the highest nodularity (0.79%), followed by 1.1%Ni (0.75%), 2.2%Ni (0.71%), 3.7%Ni (0.69%) and 4.5%Ni (0.58%). The hardness and tensile strength increase when increasing the nickel content. Elongation is enhanced with nickel increasing and reaches a maximum of 12% at 1.1 wt% Ni, then decreases with the further increase of nickel.
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Latushkina, Elena, and Anna Oleynik. "Distribution of heavy metals in anthropogenic soils: on the example of the industrial zone of Moscow." E3S Web of Conferences 169 (2020): 01023. http://dx.doi.org/10.1051/e3sconf/202016901023.

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The article presents the results of the assessment of the distribution of heavy metals content in anthropogenic transformed soils of the industrial zone of Moscow. Excesses of norms are shown, geochemical associations are obtained. The work proved to exceed the maximum permissible concentrations of cadmium, lead, copper, nickel, zinc, arsenic for eleven test sites per 13.95 hectares of industrial zone in 57% of the obtained empirical data on the content of pollutants in the soil. In the investigated area, the contents of lead, copper, nickel and zinc are not uniformly distributed and are within wide range. No excess of the norm was recorded for mercury. The isolation of two geochemical associations of manmade genesis is justified. One association includes cadmium lead, copper, and zinc with the system-forming element copper. The other consists of nickel and mercury.
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50

Ma, Yongbo, and Xueyan Du. "Effects of CaO Addition on the Iron Recycling from Nickel Slags by Oxidation-Magnetic Separation." Metals 8, no. 11 (November 16, 2018): 956. http://dx.doi.org/10.3390/met8110956.

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To recover iron from water-quenched nickel slags, CaO was added. Thermodynamic analysis showed that CaO promotes the reaction between fayalite (Fe2SiO4) and O2. Phase diagrams of the FeO-SiO2-MgO-CaO slag with various CaO contents in an air atmosphere drawn by FactSage 7.1 showed that the phase components can be significantly affected by the CaO contents. With increasing CaO content, the fusion characteristic temperatures decreased rapidly to a minimum and subsequently increased slightly. The oxidization of Fe2SiO4 in nickel slags was accelerated significantly by the addition of CaO, which led to an increase of FeO activity and decrease of Fe2O3 activity to promote the formation of MgFe2O4. Excess addition of CaO led to the formation of more silicates. In addition, the crystallization temperature was also reduced with increasing CaO content, causing less spinel to crystalize. With increasing CaO content, the iron recovery and yield of concentrate first increased and subsequently decreased, while the total iron (TFe) content was almost not influenced and maintained a relatively stable value.
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