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Artykuły w czasopismach na temat „Characterization of Nickel”

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Data publikacji: 11 września 2023

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1

B. Govindaraj, B. Govindaraj, Arunkumar Lagashetty i A. Venkataraman A. Venkataraman. "Synthesis, Characterization and d.c conductivity of Nano sized Nickel Oxide". Indian Journal of Applied Research 3, nr 6 (1.10.2011): 60–61. http://dx.doi.org/10.15373/2249555x/june2013/21.

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2

Lucyszyn, Stepan. "Microwave Characterization of Nickel". PIERS Online 4, nr 6 (2008): 686–90. http://dx.doi.org/10.2529/piers080119215655.

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3

Fritz, T., H. S. Cho, K. J. Hemker, W. Mokwa i U. Schnakenberg. "Characterization of electroplated nickel". Microsystem Technologies 9, nr 1-2 (1.11.2002): 87–91. http://dx.doi.org/10.1007/s00542-002-0199-1.

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4

Qin, Hui Ru, Ji Min Xie, Jun Jie Jing, Wen Hua Li i Zhi Feng Jiang. "Preparation and Characterization of Nickel Nanopowder for Conductive Pastes". Advanced Materials Research 347-353 (październik 2011): 3485–88. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.3485.

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In this paper, nickel nanopowder was prepared by liquid phase reduction method, where nickel acetate and hydrazine hydrate was used as nickel source and reducing agent, respectively. The resulting Ni nanoparticles were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM). The results showed that nickel acetate can be effectively reduced by hydrazine hydrate. The as-prepared nickel nanoparticles are in spherical shape, with size ranging from 100 to 200nm and good dispersion. By changing the reaction conditions, the morphology and size of nickel particles can be controlled. The synthesized nickel nanopowders meet the general requirements of nickel powder that would be used for conductive paste, which can be prepared for nickel-based conductive paste. This method has some advantages such as inexpensive, non-pollution to environment; it can be used for industry.

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5

Brieu, M., J. J. Couderc, A. Rousset i R. Legros. "TEM characterization of nickel and nickel-cobalt manganite ceramics". Journal of the European Ceramic Society 11, nr 2 (styczeń 1993): 171–77. http://dx.doi.org/10.1016/0955-2219(93)90049-w.

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6

Jiang, Ning, Shuang Ling Jin, Xia Shao, Hua Feng Zhang, Zhi Jun Li, Shi Min Zhang, Ming Lin Jin i Rui Zhang. "Synthesis and Characterization of Ni-Doped Carbon Aerogels". Advanced Materials Research 1061-1062 (grudzień 2014): 133–36. http://dx.doi.org/10.4028/www.scientific.net/amr.1061-1062.133.

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The carbon aerogels doped with nickel were produced by sol-gel, supercritical ethanol drying, and high-temperature carbonization, using resorcinol-furfural as carbon source, nickel nitrate as nickel source, absolute ethanol as dispersion medium, 1,2-epoxypropane as gel initiator, polyacrylic acid as the chelating agent. The carbon aerogels were characterized by nitrogen adsorption and XRD. The effects of the molar ratio of 1,2-epoxypropane to nickel on porosity of the Ni-doped carbon aerogels were investigated. It is found that the Ni-doped carbon aerogels have abundant mesopores and the doped nickel is dispersed in samples in metallic state and oxide or pure metal depending on the preparation conditions. The mesopore volume and average mesopore size all increase with the ratio of 1,2-epoxypropane to nickel.

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7

Li, Chang Yu, Shou Xin Liu i Li Li Liu. "Preparation and Characterization of Flowerlike Nickel Oxide". Applied Mechanics and Materials 121-126 (październik 2011): 1044–48. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.1044.

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Flowerlike nickel oxide was synthesized by a simple liquid-phase process to obtain the hydroxide precursor and then calcined to form the nickel oxide. The precursor and the nickel oxide were characterized by X-ray diffraction (XRD), thermogravimetric analysis (TG) , the scanning electron microscope(SEM) and Brunauer–Emmett–Teller-specific surface area measurement. The results indicated α-Nickel hydroxide was transferred to NiO with a cubic crystalline structure after being calcined at 450 °C; the NiO still kept the morphology of the precursors and the specific surface area of the NiO was 125.2m2/g.

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8

Pramana, Yanatra Budi, Bramianto Setiawan, Prihono Prihono, Yitno Utomo, Marianus Subandowo i Krisyanti Budipramana. "A SIMPLE SYNTHESIS OF NICKEL OXIDE NANOTUBE USING HIGH VOLTAGE ELECTROLYSIS". Jurnal Neutrino 13, nr 1 (2.02.2021): 13–18. http://dx.doi.org/10.18860/neu.v13i1.10224.

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Recently, the development of nanoparticle nickel oxide has increased due to their potential application such as biosensors, catalysts, solar cells, supercapacitors, and batteries. In this work, the addition of CTAB for nickel oxide nanoparticle synthesis using electrolysis was investigated. The nickel plates were used as anode and cathode in the electrolysis process. The process was operated at a constant voltage of 60 V for 30 minutes. The XRD result showed conformity with the Nickel oxide diffraction pattern. Meanwhile, the impurity from nickel hydroxide peaks still appeared. From FTIR characterization also indicates the band of Ni-O stretching vibration. The morphology characterization of nickel oxide using Scanning Electron Microscopy (SEM) showed the nanotube structure, while Transmission Electron Microscopy showed the nanoparticle size from 250.44 to 325.60 nm in length. On the other hand, the transformation of Ni(OH)2 to NiO has been shown using TGA characterization.

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9

Massarotti, V., D. Capsoni, V. Berbenni, R. Riccardi, A. Marini i E. Antolini. "Structural Characterization of Nickel Oxide". Zeitschrift für Naturforschung A 46, nr 6 (1.06.1991): 503–12. http://dx.doi.org/10.1515/zna-1991-0606.

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AbstractIt is known from the literature that a slight distortion of the ideal cubic cell is present in the NiO structure. This work shows that such a distortion can be accurately evaluated by means of a refinement of the structural and profile parameters of X-ray powder diffraction data. Moreover, since only small amounts of products are sometimes at disposal to perform structural characterizations, it was thought useful to extend the refinement procedure to X-ray data collected on NiO samples of much lower mass (15-60 mg) than those usually utilized in X-ray diffractometric studies. The results obtained show that reliable structural parameters can be obtained from low mass samples too

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10

Uchiyama*, Souichi, Yasuo Obayashi, Toshiaki Hayasaka i Noboru Kawata. "Characterization of coprecipitated nickel catalysts". Applied Catalysis 47, nr 1 (luty 1989): 155–63. http://dx.doi.org/10.1016/s0166-9834(00)83271-6.

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11

Tavares, S. S. M., A. Lafuente, S. Miraglia, D. Fruchart, B. Lambert i S. Pairis. "SEM Characterization of Hydrogenated Nickel". Microscopy and Microanalysis 7, S2 (sierpień 2001): 1268–69. http://dx.doi.org/10.1017/s1431927600032414.

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The insertion of hydrogen in metals promotes severe modifications of physical and mechanical properties. in the case of nickel, hydrogen induces intergranular cracking [1] and decrease of ferromagnetism [2]. Hydrogen occupies the octahedral interstices of the fee structure promoting cell expansion. Large amounts of the fcc (β hydride may be produced by high pressure hydrogenation [3] or electrolytic charging [4]. The H/Ni relation (x) in the P hydride range from 0.6 to 1.0, depending on the method and conditions of hydrogenation. The β hydride is known to be metaestable at room temperature and normal pressure [5].In this work, a thin foil (0.02mm thick) of high purity nickel was hydrogenated by electrolytic charging in a 1N H2SO4 solution with 20 mA/cm2 by 24 hours. AS2O3 was used as catalyst in a concentration of 5xl0−5mol/l. The hydrogenated samples were analysed by X-ray diffraction and SEM immediately after and 4 hours after the charging (room temperature aging).

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12

Rossetto, Franco E., John D. Turnbull i Evert Nieboer. "Characterization of nickel-induced mutations". Science of The Total Environment 148, nr 2-3 (czerwiec 1994): 201–6. http://dx.doi.org/10.1016/0048-9697(94)90397-2.

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13

Saad, L., i S. Mikhail. "Sulfated Nickel Zeolite Catalyst Characterization". Petroleum Science and Technology 23, nr 11-12 (1.11.2005): 1463–77. http://dx.doi.org/10.1081/lft-200038258.

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14

Tanaka, Keiseke, Masashi Sakakibara, Hiroto Tanaka i Hirohisa Kiamchi. "OS04F033 Microstructural Characterization of Nanocrystalline Nickel Thin Films by X-Ray Diffraction". Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011.10 (2011): _OS04F033——_OS04F033—. http://dx.doi.org/10.1299/jsmeatem.2011.10._os04f033-.

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15

Wang, Kai, Jian Li, R. G. McDonald i R. E. Browner. "Nickel Loss during Iron Precipitation and Product Characterization". Advanced Materials Research 402 (listopad 2011): 293–96. http://dx.doi.org/10.4028/www.scientific.net/amr.402.293.

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In this study, the iron precipitation and associated nickel loss from synthetic ferric and nickel sulphate solutions were investigated. Two types of common neutralizing agents, magnesium oxide and calcium carbonate were applied in the investigation. The results indicated that pH and temperature had significant impacts on nickel loss during the iron precipitation process, whereas the type of neutralizing agents had little effect. It was found that increasing in pH and temperature resulted in more nickel loss in the pH range of 2 to 4 and temperature range of 25 to 85 °C. Mineralogical examination by XRD indicated that the iron precipitates were combinations of schwertmannite, ferrihydrite and goethite. In addition, more crystalline goethite was formed from the ferric solutions when no nickel was present, indicating that nickel might play a role in inhabiting the crystallization of goethite.

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16

Simões, Sónia, Íris Carneiro, Filomena Viana, Marcos A. L. Reis i Manuel F. Vieira. "Microstructural Characterization of Carbon Nanotubes (CNTs)-Reinforced Nickel Matrix Nanocomposites". Microscopy and Microanalysis 25, nr 1 (24.09.2018): 180–86. http://dx.doi.org/10.1017/s1431927618015064.

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AbstractThis research focuses on the microstructural characterization of nickel matrix composites reinforced by carbon nanotubes (CNTs). The nanocomposites were produced by a conventional powder metallurgy process and the dispersion of CNTs and mixture with nickel powders was performed in a single step by ultrasonication. Microstructural characterization of Ni–CNT nanocomposites was performed by scanning and transmission electron microscopy, electron backscattered diffraction, high-resolution transmission electron microscopy, selected area electron diffraction, and fast Fourier transform analyses. This characterization revealed CNTs embedded in the nickel grains and mainly presented as clusters at the grain boundaries. CNTs hinder recrystallization during sintering, and dislocation cells and subgrains form as a result of the recovery process.

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17

Marita, Yusrini, i Iskandar Idris Yaacob. "Structural Characterization of Electrodeposited Nickel-Iron Alloy Films". Materials Science Forum 654-656 (czerwiec 2010): 2430–33. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.2430.

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Nickel-iron nanocrystalline alloy films were prepared on copper substrates by electrochemical deposition at various current densities of 6, 9.7, 11.5 and 15.2 A dm-2. X-ray diffraction measurements confirmed that all nickel-iron alloy films formed have face-centered cubic structure. The structural parameters such as the lattice constant, crystallite size, microstrain and dislocation density were determined for the nickel-iron alloy films. The crystallite size of the films reduced from 17 to 12.9 nm when the current densities were decreased. The reduction in crystallite size increased the dislocation density. Magnetic property measurements using alternating gradient magnetometer indicated that these alloys were ferromagnetic. The saturation magnetization Ms of nickel-iron alloy films increased with decreasing deposition current density, which was attributed to the increase of iron content. Nickel-iron alloy film prepared at deposition current density of 6 A dm-2 showed the maximum value of Ms. The coercivity of nickel-iron alloy films increased with decreasing current density, which was likely caused by reduction in crystallite size.

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18

Iyer, Sanesh, i Pascal Hubert. "Thermomechanical characterization of functionally stabilized nickel-titanium-copper shape memory alloy". Engineering Research Express 4, nr 1 (1.03.2022): 015031. http://dx.doi.org/10.1088/2631-8695/ac2bf1.

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Abstract Shape memory alloy hybrid composites have promise in realizing the 21st century goal of morphing structures. There is considerable work to be done in the development of characterization and modeling techniques for these materials. The proposed characterization methodology adapts existing standards to include previously omitted factors required for the numerical modelling of shape memory alloys and their integration into end-use applications. A nickel-titanium-copper (NiTiCu) shape memory alloy is characterized using these methods and then numerically modelled. Samples’ mechanical behaviour is shown to stabilize after 43 cycles of mechanical loading. Thermomechanical properties measured before and after stabilization are shown to vary inconsistently by up to 72%, demonstrating the need for stabilization for accurate thermomechanical characterizations and consistency in end-use applications. Physical experiments are numerically replicated in Abaqus\Standard using the measured properties. Sufficient correlation is shown for the design of shape memory alloy hybrid composites. The result of this work is a comprehensive thermomechanical characterization approach for shape memory alloys which can be used to develop morphing SMA hybrid composite structures.

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19

Morrissey, Amy, Jianhua Tong, Brian P. Gorman i Ivar E. Reimanis. "Characterization of Nickel Ions in Nickel-Doped Yttria-Stabilized Zirconia". Journal of the American Ceramic Society 97, nr 4 (29.01.2014): 1041–47. http://dx.doi.org/10.1111/jace.12839.

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20

Marita, Yusrini, i Iskandar Idris Yaacob. "Synthesis and Characterization of Nickel-Iron-Silicon Nitride Nanocomposite". Advanced Materials Research 97-101 (marzec 2010): 1360–63. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.1360.

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Nickel-iron-silicon nitride nanocomposite thin films were prepared by electrodeposition technique. The deposition was performed at current density of 11.5 A dm-2. Nano-size silicon nitride was mixed in the electrolyte bath as dispersed phase. The effects of silicon nitride nanoparticulates in the nickel-iron nanocomposite thin films were investigated in relation to the amount of silicon nitride in the plating bath. X-ray diffraction (XRD) analysis showed that the deposited nickel iron film has face-centered cubic structure (FCC). However, a mixture of body-centered cubic (BCC) and face-centered cubic (FCC) phases were observed for nickel iron-silicon nitride nanocomposite films. The crystallite size of Ni-Fe nanocomposite coating decreased with increasing amount of silicon nitride in the film. From elemental mapping procedure, Si3N4 nanopaticles were uniformly distributed in the Ni-Fe film. The presence of silicon nitride increased the hardness of the film. The microhardness of the nickel-iron nanocomposite increased from 495 HV for nickel-iron film to 846 HV for nickel-iron nanocomposite film with 2 at. % Si. The coercivity of Ni-Fe nanaocomposite films increases with decreasing crystallite size.

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21

Gong, Kai, Guo Qing Xu i Zong Jun Tian. "Preparation and Characterization of Bulk Porous Nickel Fabricated by Novel Scanning Jet Electrodeposition". Applied Mechanics and Materials 532 (luty 2014): 562–67. http://dx.doi.org/10.4028/www.scientific.net/amm.532.562.

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The bulk porous nickel was fabricated by layer scanning jet electrodeposition, a novel porous metal preparation technique. The dendritic crystalline layer or normal layer of the bulk porous nickel can be obtained by controlling of the growth conditions. The effects of deposition conditions, such as jet velocity, deposition current density, jet scanning mode, scanning rate, electrolyte solution, etc., on the morphology and growth process of the dendritic structures were studied in detail. It is revealed that the deposition rate and the uniformity of the pore distribution for the bulk porous Ni increase with the decrease of jet velocity. The depositing current density has an upper and lower limit. The dendritic structures are sensitive to the scanning rate, scanning mode, electrolyte solution. As a result, the optimized bulk porous nickels with controllable dendritic crystalline layered structure, pore size and porosity were fabricated by accurately controlling the growth conditions above.

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22

Tanaka, Keisuke, Masashi Skakibara, Hiroto Tanaka i Hiroshi Kimachi. "OS04-1-2 Microstructural Characterization of Nanocrystalline Nickel Films by X-Ray Diffraction". Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011.10 (2011): _OS04–1–2—. http://dx.doi.org/10.1299/jsmeatem.2011.10._os04-1-2-.

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23

Wu, Xiao Feng, Yun Fa Chen, Qun Yan Li i L. Q. Wei. "Preparation and Characterization of Integral Hollow Microspheres of Nickel Hydroxide and Nickel Oxide". Solid State Phenomena 121-123 (marzec 2007): 187–90. http://dx.doi.org/10.4028/www.scientific.net/ssp.121-123.187.

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Hollow microspheres of nickel hydroxide and nickel oxide were prepared with as-synthesized PS/Ni(OH)2 composite particles by sacrificing core method, respectively. The composite particles were synthesized by deposition of the Ni(OH)2 nanoflakelets formed by the hydrolysis of nickel nitrate onto the surfaces of polystyrene (PS) particles. The effects of different concentrations of nickel salt and urea on the deposition of the nanoflakelets of nickel hydroxide were studied. It was found that the uniform nanoflakelets were deposited on the polystyrene particles under the conditions of the 4╳10-3 M nickel salt and 0.667M urea. Compared with the directly calcinating of composite particles, Integral hollow microspheres of nickel hydroxide were attained by removal of cores of polystyrene in composite particles with toluene and NiO hollow microspheres by calcinating of these Ni(OH)2 hollow spheres in oven at 600°C for 2h.

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24

Zhang, Yun, Feida Chen, Xiaobin Tang, Hai Huang, Minxuan Ni i Tuo Chen. "Preparation and characterization of paraffin/nickel foam composites as neutron-shielding materials". Journal of Composite Materials 52, nr 7 (5.07.2017): 953–62. http://dx.doi.org/10.1177/0021998317717596.

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Traditional neutron-shielding materials usually have poor mechanical properties and secondary gamma-shielding capability. The new requirements of modern neutron-shielding materials are difficult to satisfy. A paraffin/nickel foam neutron-shielding composite was prepared and characterized in this study. Open-cell nickel foams were fabricated through electrodeposition. Subsequently, the paraffin/nickel foam composite were prepared by filling the open-cell nickel foams with melted paraffin. The intrinsic parameters of nickel foam and the content of neutron absorber (boron carbide) were controlled to optimize the composite. The mechanical properties of the composite were studied through a static compression test. The compressive strength improved to 0.4 times that of the nickel foams. The Am–Be source transmittance experiment showed that the 8 cm thick PFM presented a neutron transmittance of 56.1%, and the 6 cm thick boron carbide/paraffin/nickel foam (PFM-B) presented a neutron transmittance of 37.6%. The paraffin/nickel foam and PFM-B had approximately the same shielding efficiency as paraffin and boron carbide/paraffin, respectively. However, the second gamma ray shielding efficiency of the paraffin/nickel foam and PFM-B was significantly higher than that of paraffin and boron carbide/paraffin. The mechanical properties and secondary gamma ray-shielding capability of the composite can be improved by increasing the relative density of nickel foams.

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25

Ammar, Saad H. Ammar, Natheer Nori Ismail i Marwa F. Abdul Jabbar. "Preparation and characterization of magnetic nickel nanoparticles by chemical reduction reaction". Journal of Petroleum Research and Studies 8, nr 4 (1.05.2021): 87–100. http://dx.doi.org/10.52716/jprs.v8i4.266.

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The efficiency of many of conversion-processes in petroleum and industrial improves upon application of materials with the nanosized scale dimension, which is caused by enhancements and advances of improved properties as the particle size decreases. Nickel nanoparticles has numerous applications in petroleum industry with its own catalytic in additional to the magnetic properties. In this study, high purity nanosized magnetic nickel particles has been effectively prepared by chemical reduction of nickel chloride using hydrazine hydrate as reducing agent in aqueous solutions containing ethylene glycol and water and using polyvinylpyrrolidone (PVP) as anti-agglomeration agent. Nanosized Ni particles samples with different hydrazine to nickel chloride mole ratios and PVP to nickel chloride ratios were obtained at constant temperature of 80 °C. The morphology and structural properties of the produced magnetic nickel nanoparticles were characterized by powder XRD and AFM methods. XRD study revealed that the prepared nanoparticles were pure nickel nanoparticles without considerable oxides or other impurity phases. AFM test revealed that all prepared Ni nanoparticles was in nano scale, it was stated that Ni nanoparticles size was very affected by the hydrazine/nickel mole ratio. Experimental results showed that particle size decreases from 94.35 nm to 71.48 nm when increases the [N2H4]/[Ni2+] molar ratio from 15:1 to 45:1.

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26

Kaur, Raminder. "Fabrication and Characterization of Nickel Nanowires". International Journal on Organic Electronics 3, nr 4 (31.10.2014): 1–8. http://dx.doi.org/10.5121/ijoe.2014.3401.

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27

Imbert, B., R. Pantel, S. Zoll, M. Gregoire, R. Beneyton, S. del Medico i O. Thomas. "Nickel silicide encroachment formation and characterization". Microelectronic Engineering 87, nr 3 (marzec 2010): 245–48. http://dx.doi.org/10.1016/j.mee.2009.06.003.

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28

Martyak, Nicholas M. "Characterization of Thin Electroless Nickel Coatings". Chemistry of Materials 6, nr 10 (październik 1994): 1667–74. http://dx.doi.org/10.1021/cm00046a019.

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Maclean, AL, GJ Foran, BJ Kennedy, P. Turner i TW Hambley. "Structural Characterization of Nickel(II) Tetraphenylporphyrin". Australian Journal of Chemistry 49, nr 12 (1996): 1273. http://dx.doi.org/10.1071/ch9961273.

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The structure of 5,10,15,20-tetraphenylporphinatonickel(II) ([Ni( tpp )]) has been studied by both X-ray diffraction (powder and single-crystal methods) and EXAFS. The bond lengths obtained from analysis of the EXAFS agree, within standard deviations, with those obtained from the X-ray diffraction studies. The Ni-N bond length of 1.93(1) Ǻ agrees especially well with the value of 1.931(2) Ǻ obtained from the single-crystal analysis. The powder X-ray diffraction pattern, collected by using synchrotron radiation, is presented.

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30

Bertini, Ivano, Antonio Donaire, Roberto Monnanni, Jos�-Mar�a Moratal i Jes�s Salgado. "Spectroscopic characterization of nickel(II) carboxypeptidase". Journal of the Chemical Society, Dalton Transactions, nr 8 (1992): 1443. http://dx.doi.org/10.1039/dt9920001443.

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31

Kamath, P. Vishnu, i G. N. Subbanna. "Electroless nickel hydroxide: synthesis and characterization". Journal of Applied Electrochemistry 22, nr 5 (maj 1992): 478–82. http://dx.doi.org/10.1007/bf01077552.

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32

Zhilyaev, A. P., J. Gubicza, G. Nurislamova, Á. Révész, S. Suriñach, M. D. Baró i T. Ungár. "Microstructural characterization of ultrafine-grained nickel". physica status solidi (a) 198, nr 2 (sierpień 2003): 263–71. http://dx.doi.org/10.1002/pssa.200306608.

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33

Rajam, K. S., S. R. Rajagopalan, M. S. Hegde i B. Viswanathan. "Characterization of electroless nickel by esca". Materials Chemistry and Physics 27, nr 2 (luty 1991): 141–54. http://dx.doi.org/10.1016/0254-0584(91)90113-9.

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Natter, H., M. Schmelzer i R. Hempelmann. "Nanocrystalline nickel and nickel-copper alloys: Synthesis, characterization, and thermal stability". Journal of Materials Research 13, nr 5 (maj 1998): 1186–97. http://dx.doi.org/10.1557/jmr.1998.0169.

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Pulsed electrodeposition is a simple, yet versatile method for the production of nanostructured metals. For n-nickel we determine the influence of the physical and chemical deposition parameters on the nanostructure of the deposits and demonstrate that the grain size can be tuned to values between 13 and 93 nm, with rather narrow grain size distribution. The thermal stability of our n-nickel as studied by x-ray diffraction and differential thermal analysis exhibits no detectable grain growth up to temperatures of about 380 K and an initial behavior at 503 K followed by a regime of anomalous grain growth. For nanocrystalline Ni1-x Cux (Monel-metal™) we demonstrate that alloy formation occurs at room temperature and that both chemical composition and grain size can be controlled by the pulse parameters and by appropriate organic additives.

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35

Bastos, Juan A., Mirta Raquel Barbosa, Jeronimo Agrisuelas, Antonello Frau, Jose García i Francisco Vicente. "Voltammetric Characterization of Nickel Hydroxide Grown on Nickel/Epoxy Moldable Electrodes". ECS Transactions 77, nr 11 (7.07.2017): 837–46. http://dx.doi.org/10.1149/07711.0837ecst.

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36

Karayannis, V. G., i A. K. Moutsatsou. "Synthesis and Characterization of Nickel-Alumina Composites from Recycled Nickel Powder". Advances in Materials Science and Engineering 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/395612.

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The recycling of metallic waste to create more valuable materials and their valorization into upgraded metal-based composites constitutes an important field of study. The composite industry nowadays considers environmental improvements as important as other properties of the materials. In the present paper, nickel powder was recycled from ferrous scrap, a low-cost and largely available material, by an effective hydrometallurgical recovery process. Then, this recycled powder was successfully used along with particulateα-alumina to prepare oblong nickel-based composite specimens with ceramic reinforcement loadings ranging from 0 to 30 wt.% by applying powder processing manufacturing techniques including cold isostatic pressing (CIP) and sintering. The microstructures obtained were characterized, the specimens were subjected to three-point bend tests, and their fracture behaviour was evaluated. By increasing the % ceramic reinforcement content, density clearly decreases while strengthening is achieved, thus leading to development of lightweight and enhanced oblong nickel-alumina composites. The composite microstructure, and particularly the metal-ceramic interface bonding, has a strong impact on fracture behaviour upon external loading.

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Zhou, Gen-Tao, Qi-Zhi Yao, Xinchen Wang i Jimmy C. Yu. "Preparation and characterization of nanoplatelets of nickel hydroxide and nickel oxide". Materials Chemistry and Physics 98, nr 2-3 (sierpień 2006): 267–72. http://dx.doi.org/10.1016/j.matchemphys.2005.09.030.

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Adsten, M., R. Joerger, K. Järrendahl i E. Wäckelgård. "Optical Characterization Of Industrially Sputtered Nickel–Nickel Oxide Solar Selective Surface". Solar Energy 68, nr 4 (2000): 325–28. http://dx.doi.org/10.1016/s0038-092x(00)00023-2.

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Salagre, P., J. L. G. Fierro, F. Medina i J. E. Sueiras. "Characterization of nickel species on several γ-alumina supported nickel samples". Journal of Molecular Catalysis A: Chemical 106, nr 1-2 (marzec 1996): 125–34. http://dx.doi.org/10.1016/1381-1169(95)00256-1.

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Kareem, Shaima'a J., Mohammed Naji Al-Aaraji i Amany Hatem. "Investigation of Microstructure and Physical Properties of Nickel Ferrites, Synthesized via Sol-Gel Method". Solid State Phenomena 341 (15.03.2023): 57–64. http://dx.doi.org/10.4028/p-88v98w.

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In this paper, studying synthesis and characterization of ferrospinel nickel ferrite. Nickel ferrite is prepared by using the sol-gel method, with a ratio of 2:1 of iron nitrate to nickel nitrate. First the starting material is dissolved in 100 ml of ethylene glycol solution to get the gel and then the gel was dried at 160°C then calcined at 600°C to obtain fine powder, second the nickel ferrite powder is pressed and sintered at 1200°C. To characterize nickel ferrite are used different techniques, such as: XRD is shown high purity, the purity of the nickel ferrite is known and the extent to which the material is affected by the temperatures of calcination and sintering. FT-IR that is shown absorption band between the elements of the components of nickel ferrite appears. The shape of the resulting powder is known through the SEM, the SEM images showed the spherical shape of the nickel ferrite powder, found the particular size of powder at 600°C ranges between405-264 nm and for sample after sintering at 1200°C ranges between589-353 nm, and our Physical characterization test down.

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Perry, Dale L., Paul Berdahl i Charles Perrino. "Magnetic characterization of calcium-nickel-potassium oxide catalysts". Journal of Materials Research 9, nr 11 (listopad 1994): 2993–97. http://dx.doi.org/10.1557/jmr.1994.2993.

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SQUID magnetometer characterization of Ca–Ni–K–O catalyst materials reveals complex magnetic behavior. The magnetic properties are generally determined by the antiferromagnetic material NiO, but samples with traces of elemental nickel show marked effects of ferromagnetism. Potassium doping enhances the formation of metallic nickel. Further deviations from bulk NiO properties can be attributed to NiO particle size effects (superparamagnetism) and to the presence of paramagnetic impurities, possibly Ni3+ ions.

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Samreen Zahra, Samreen Zahra, Dr Narjis Naz Dr Narjis Naz, Dr Muhammad Zia ur Rehman Dr Muhammad Zia ur Rehman i Muhammad Irfan Asma Sheikh and Sania Izhar Muhammad Irfan Asma Sheikh and Sania Izhar. "Characterization of Sol-gel Prepared Silica Supported NiO-CuO Composites". Journal of the chemical society of pakistan 42, nr 2 (2020): 164. http://dx.doi.org/10.52568/000633.

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Silica (SiO2) supported nickel oxide-copper oxide (NiO-CuO) composites were synthesized through alkoxide route of sol-gel process using tetraethyl ortthosilicate (TEOS), nickel nitrate hexahydrate and copper nitrate trihydrate as precursors. A series of different compositions were prepared varying NiO:CuO molar ratios keeping all other process parameters constant. The gels thus obtained were calcined at a moderate temperature i.e. 500and#186;C for one hour. The crystal structure and thermal stability of metal oxide particles embedded in silica matrix were studied using X-ray diffraction technique (XRD) and differential scanning calorimetry (DSC-TGA) respectively. The purity of the composites was checked by Infrared spectroscopy (IR) whereas the composite formation was confirmed by scanning electron microscopy. The results revealed that crystals of NiO and CuO nanoparticles aggregated to form spheres of variable sizes were successfully embedded in the amorphous silica matrix composed of silica particles agglomerated to form clusters.

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Samreen Zahra, Samreen Zahra, Dr Narjis Naz Dr Narjis Naz, Dr Muhammad Zia ur Rehman Dr Muhammad Zia ur Rehman i Muhammad Irfan Asma Sheikh and Sania Izhar Muhammad Irfan Asma Sheikh and Sania Izhar. "Characterization of Sol-gel Prepared Silica Supported NiO-CuO Composites". Journal of the chemical society of pakistan 42, nr 2 (2020): 164. http://dx.doi.org/10.52568/000633/jcsp/42.02.2020.

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Silica (SiO2) supported nickel oxide-copper oxide (NiO-CuO) composites were synthesized through alkoxide route of sol-gel process using tetraethyl ortthosilicate (TEOS), nickel nitrate hexahydrate and copper nitrate trihydrate as precursors. A series of different compositions were prepared varying NiO:CuO molar ratios keeping all other process parameters constant. The gels thus obtained were calcined at a moderate temperature i.e. 500and#186;C for one hour. The crystal structure and thermal stability of metal oxide particles embedded in silica matrix were studied using X-ray diffraction technique (XRD) and differential scanning calorimetry (DSC-TGA) respectively. The purity of the composites was checked by Infrared spectroscopy (IR) whereas the composite formation was confirmed by scanning electron microscopy. The results revealed that crystals of NiO and CuO nanoparticles aggregated to form spheres of variable sizes were successfully embedded in the amorphous silica matrix composed of silica particles agglomerated to form clusters.

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Wei, Xue Yong, i Kyle Jiang. "Synthesis and Characterization of Nanoparticulate Strengthened Nickel Microcomponents". Advances in Science and Technology 54 (wrzesień 2008): 299–304. http://dx.doi.org/10.4028/www.scientific.net/ast.54.299.

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In this study, microcomponents of nickel (Ni) based nanocomposite were obtained by electrochemical co-deposition of Ni and alumina (Al2O3) nanoparticles into the microfabricated photoresist moulds from a nickel sulfamate bath with the presence of multi-wall carbon nanotubes (MWCNTs). The examination of dispersion behaviour of Al2O3 nanoparticles in nickel sulfamate bath with MWCNTs showed that the surfaces of the fillers are positively charged in a wide range of pH value, which favours the co-deposition of Al2O3 nanoparticles and MWCNTs with Ni. Results of SEM and EDX characterizations showed that the Al2O3 nanoparticles were uniformly distributed in the Ni matrix and their contents were improved with the presence of MWCNTs in the solution. It was also found that the mechanical properties of Ni were enhanced by the nanoparticulates in the Ni matrix.

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Yamanoglu, R. "Production and characterization of Al-xNi in situ composites using hot pressing". Journal of Mining and Metallurgy, Section B: Metallurgy 50, nr 1 (2014): 45–52. http://dx.doi.org/10.2298/jmmb130717001y.

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In this study, a new metal matrix composite of aluminium was designed with the addition of nickel alloy particles. To produce in situ intermetallic formation, aluminium-nickel powder mixtures with different ratios ranging from 5 to 40 wt% Ni were consolidated at 550?C for 15 minutes under 40 MPa pressure. The interlayer phase formed during sintering was determined using X-ray diffraction and energy dispersive X-ray spectroscopy. The effect of nickel and Al-Ni intermetallics on the mechanical properties of the material was studied. The results demonstrated that the addition of nickel enhanced the hardness and wear behaviour of aluminium by forming a strong bonding interface between the aluminium and nickel particles.

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Potocnik, J., M. Nenadovic, B. Jokic, S. Strbac i Z. Rakocevic. "Structural characterization of the nickel thin film deposited by glad technique". Science of Sintering 45, nr 1 (2013): 61–67. http://dx.doi.org/10.2298/sos1301061p.

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In this work, a columnar structure of nickel thin film has been obtained using an advanced deposition technique known as Glancing Angle Deposition. Nickel thin film was deposited on glass sample at the constant emission current of 100 mA. Glass sample was positioned 15 degrees with respect to the nickel vapor flux. The obtained nickel thin film was characterized by Force Modulation Atomic Force Microscopy and by Scanning Electron Microscopy. Analysis indicated that the formation of the columnar structure occurred at the film thickness of 1 ?m, which was achieved for the deposition time of 3 hours.

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Wanta, Kevin Cleary, Stephen Lim, Ratna Frida Susanti, Gelar Panji Gemilar, Widi Astuti i Himawan Tri Bayu Murti Petrus. "Effect of Surfactant Type on Synthesis and Characteristics of Nanonickel Hydroxide". Jurnal Rekayasa Proses 15, nr 2 (30.12.2021): 217. http://dx.doi.org/10.22146/jrekpros.69723.

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Nickel hydroxide has a vital role in various applications, especially as a support material for energy storage materials. Nickel hydroxide can be synthesized through the hydroxide precipitation method. However, the product formed by this method may be large or more than 100 nm because the agglomeration step can occur easily. This present work aims to study the effect of surfactant types in the synthesis and characterization of nickel hydroxide nanoparticle. Nickel sulfate (NiSO4) solution was used as a precursor solution, while 5M sodium hydroxide (NaOH) solution was used as a precipitation agent. The surfactants studied were alkyl benzene sulfonate (ABS), sodium dodecyl sulfate (SDS), cetyltrimethylammonium bromide (CTAB), and polyvinylpyrrolidone (PVP). The nickel hydroxide synthesis process was carried out at 50 oC for 1 hour. The surfactant concentration used was at the critical micelle concentration (CMC), where the CMC for ABS, SDS, CTAB, and PVP were 0.01; 0.05; 3; and 0.5 %w/v, respectively. The synthesis of nickel hydroxide nanoparticle was carried out successfully precipitated almost 100% of Ni2+ ions. The product characterization that has been carried out shows that ABS surfactant produces the best nickel hydroxide nanoparticle product where the particle size is 3.12–4.47 nm.

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de Melo Costa, Ana Cristina Figueiredo, Lucianna Gama, M. R. Morelli i Ruth Herta Goldsmith Aliaga Kiminami. "Nickel Ferrite: Combustion Synthesis, Characterization and Magnetic Properties". Materials Science Forum 498-499 (listopad 2005): 618–23. http://dx.doi.org/10.4028/www.scientific.net/msf.498-499.618.

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Nanosized spinel nickel ferrite particles have attracted considerable attention and efforts continue to investigate them for their technological importance to the microwave industries, high speed digital tap or disk recording, repulsive suspension for use in levitated railway systems, ferrofluids, catalysis and magnetic refrigeration systems. Nanosize nickel ferrite powders (NiFe2O4) have been prepared by combustion reaction using nitrates and urea as fuel. The resulting powders were characterized by X-ray diffraction (XRD), BET, and transmission electron microscopy (TEM). The results showed nanosize nickel ferrite powders with high specific surface area (55.21 m2/g). The powders showed extensive XRD line broadening and the crystallite size calculated from the XRD line broadening was 18.0 nm. The samples were uniaxially compacted by dry pressing, sintered at 1200°C/2h and characterized by bulk density, SEM and magnetic properties measurements. The samples showed uniform microstructures with grain size of 4.45 μm, maximum flux density of 0.18T, field coercive of the 488 A/m, and hysteresis loss of 47.58 W/kg.

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Anchidin-Norocel, Liliana, Wesley K. Savage, Gheorghe Gutt i Sonia Amariei. "Development, Optimization, Characterization, and Application of Electrochemical Biosensors for Detecting Nickel Ions in Food". Biosensors 11, nr 12 (16.12.2021): 519. http://dx.doi.org/10.3390/bios11120519.

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Nickel is naturally present in drinking water and many dietary items, which expose the general population to nickel ingestion. This heavy metal can have a variety of harmful health effects, causing allergies and skin disorders (i.e., dermatitis), lung, cardiovascular, and kidney diseases, and even certain cancers; therefore, nickel detection is important for public health. Recent innovations in the development of biosensors have demonstrated they offer a powerful new approach over conventional analytical techniques for the identification and quantification of user-defined compounds, including heavy metals such as nickel. We optimized five candidate nickel-biosensing receptors, and tested each for efficiency of binding to immobilization elements on screen-printed electrodes (SPEs). We characterized the application of nickel-detecting biosensors with four different cultivated vegetables. We analyzed the efficiency of each nickel-detecting biosensor by potentiostat and atomic absorption spectrometry and compared the results from the sample analytes. We then analyzed the performance characteristics and responses of assembled biosensors, and show they are very effective at measuring nickel ions in food, especially with the urease-alginate biosensor affixed to silver SPEs, measured by cyclic voltammetry (sensitivity—2.1921 µA Mm−1 cm−2 and LOD—0.005 mg/L). Given the many advantages of biosensors, we describe an optimization pipeline approach to the application of different nickel-binding biosensors for public health, nutrition, and consumer safety, which are very promising.

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Salah, Ahmed Mahmoud, Mahmoud M. Elaasser, Ibrahim Osman, Alaa Fahmy Mohamed, Hussein H. El-Shiekh i Farag Abd El-Hai. "SYNTHESIS, CHARACTERIZATION AND BIOLOGICAL ACTIVITY OF POLYMER NICKEL (II) COMPLEX". JOURNAL OF ADVANCES IN CHEMISTRY 12, nr 4 (16.12.2016): 4387–96. http://dx.doi.org/10.24297/jac.v12i4.2178.

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4-vinyl pyridine nickel complex containing polymerizable vinyl group, prepared by condensing (4:1 molar ratio) of 4-vinylpyridine with Nickel chloride, then polymerized with methyl methacrylate at 70 °C using AIBN as initiator. Metal complexand polymer metal complex have been characterized by elemental analyses, molar conductance, IR, 1H-NMR , Massspectra and thermal analyses (DTA and TGA). Conductivity measurement reveals the nonelectrolytic nature of thecomplex. This confirms that, the anion is coordinated to the metal ion. The IR reveal the metal ion is coordinated via thenitrogen atom of 4-VP. Nickel complex and polymer nickel complex have been tested invitro against number of tumor andnumber of microorganisms in order to assess their anti tumor and antimicrobial properties. The antimicrobial activity wasobserved by compounds VP-Ni and MMA-VP-Ni under the screening conditions. The activity against HCT-116 cells wasdetected for compound VP-Ni (with IC50 value 9.8±0.6 µg/ml), compared with reference standard (24.6±0.3 µg/ml) followedby MMA-VP-Ni (48.3±1.5). In conclusion, this study highlighted the synthesis of polymer nickel complex, and proved thepromising biological activity of the synthesized compounds.

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