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Готові списки джерел за темами / Carbon-containing materials / Статті в журналах

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Статті в журналах з теми "Carbon-containing materials"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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1

Umishita, K., Y. Ochiai, K. Iwasaki, and S. Hino. "Photoelectron spectra of carbon materials containing multiwall carbon nanotubes." Synthetic Metals 121, no. 1-3 (March 2001): 1159–60. http://dx.doi.org/10.1016/s0379-6779(00)01146-2.

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2

Nguyen, D. C., A. I. Vezentsev, P. V. Sokolovskiy, and A. A. Greish. "Adsorption of Glyphosate on Carbon-Containing Materials." Russian Journal of Physical Chemistry A 95, no. 6 (June 2021): 1212–15. http://dx.doi.org/10.1134/s0036024421060194.

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3

Kapralov, B. K., M. M. Veis, Yu I. kadun, and A. F. Bul'Dyaev. "Brazing carbon‐carbon composite materials with metal‐containing brazing alloys." Welding International 6, no. 7 (January 1992): 562–64. http://dx.doi.org/10.1080/09507119209548240.

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4

Babaritskii, A. I., M. A. Deminskii, S. A. Demkin, I. A. Zaev, A. V. Kleimenov, S. V. Korobtsev, M. F. Krotov, B. V. Potapkin, R. V. Smirnov, and F. N. Cheban’kov. "Plasma–melt processing of carbon-containing raw materials." Solid Fuel Chemistry 50, no. 3 (May 2016): 197–206. http://dx.doi.org/10.3103/s0361521916030022.

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5

Casagrande, T., G. Lawson, H. Li, J. Wei, A. Adronov, and I. Zhitomirsky. "Electrodeposition of composite materials containing functionalized carbon nanotubes." Materials Chemistry and Physics 111, no. 1 (September 2008): 42–49. http://dx.doi.org/10.1016/j.matchemphys.2008.03.010.

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6

Alisin, V. V., and M. N. Roshchin. "Tribology of carbon-containing materials at high temperatures." Journal of Physics: Conference Series 1399 (December 2019): 044034. http://dx.doi.org/10.1088/1742-6596/1399/4/044034.

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7

Dobrovol'skaya, I. P., T. Yu Vereshchaka, S. V. Bronnikov, K. E. Perepelkin, and B. M. Tarakanov. "Physicomechanical Properties of Carbon-Containing Film Composite Materials." Fibre Chemistry 37, no. 4 (July 2005): 300–303. http://dx.doi.org/10.1007/s10692-005-0100-y.

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8

Vietzke, E., V. Philipps, K. Flaskamp, J. Winter, and S. Veprek. "Radiation enhanced sublimation of boron containing carbon materials." Journal of Nuclear Materials 176-177 (December 1990): 481–85. http://dx.doi.org/10.1016/0022-3115(90)90093-3.

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9

Schliebe, Christian, Julian Noll, Sebastian Scharf, Thomas Gemming, Andreas Seifert, Stefan Spange, Daniel Lehmann, et al. "Nitrogen-containing porous carbon materials by twin polymerization." Colloid and Polymer Science 296, no. 3 (January 14, 2018): 413–26. http://dx.doi.org/10.1007/s00396-017-4254-y.

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10

Roshchin, M. N., A. I. Lukyanov, and A. Yu Krivosheev. "Carbon-containing materials for high-temperature friction units." IOP Conference Series: Materials Science and Engineering 1181, no. 1 (September 1, 2021): 012007. http://dx.doi.org/10.1088/1757-899x/1181/1/012007.

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11

Skripnikova, N. K., V. A. Vlasov, M. A. Semenovykh, G. G. Volokitin, and V. V. Shekhovtsov. "CARBON-CONTAINING TECHNOGENIC RAW MATERIALS IN CERAMIC PRODUCT PRODUCTION." Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture, no. 6 (December 29, 2019): 115–21. http://dx.doi.org/10.31675/1607-1859-2019-21-6-115-121.

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Анотація:

The paper explores the possibility of using carbon-containing waste produced by a metallurgical plant. The physico-mechanical characteristics of the obtained products are studied depending on the compositions and the grain size of the feedstock. It is found that the use of carbon-containing waste allows producing ceramic bricks with the following parameters: ρ ~ 2150 kg/m3, Rsg ~ 42 MPa, W ~ 3.4 %, and the frost resistance of over 50 cycles. The results of phase formation in ceramic products are presented. It is shown that the use of carbon-containing waste allows to obtain alumi-nosilicate compounds, such as anorthites and quartz-containing compounds, which give strength characteristics to finished products.

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12

Afanas’ev, V. P., A. I. Popov, A. D. Barinov, Yu N. Bodisko, G. S. Bocharov, A. S. Gryazev, A. V. Eletskii, P. S. Kaplya, I. N. Miroshnikova, and O. Yu Ridzel’. "Analysis of Carbon and Carbon-Containing Materials by X-Ray Photoelectron Spectroscopy." Russian Microelectronics 49, no. 1 (January 2020): 47–54. http://dx.doi.org/10.1134/s1063739720010035.

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13

Abdulkarimova, R. G., A. S. Suleimenova, Z. A. Mansurov, and D. S. Abdulkarimova. "Self-Propagating High Temperature Synthesis of Composition Materials using Mineral Raw Materials." Eurasian Chemico-Technological Journal 13, no. 3-4 (May 4, 2011): 169. http://dx.doi.org/10.18321/ectj81.

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Анотація:

The possibility of obtaining multicomponent refractory composition materials on the basis of quarts containing raw material by SHS method was studied. The use of a modifying carbon additive in the form of graphite power, carbonized rice husk, apricot stones and shungit was considered. It is shown that a complex use of preliminary mechanochemical activation (MA) and modification of the charge mixture with carbon containing additives contributes to formation of carbide and nitride phases in synthesis products.

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14

Kamedulski, Piotr, Piotr A. Gauden, Jerzy P. Lukaszewicz, and Anna Ilnicka. "Effective Synthesis of Carbon Hybrid Materials Containing Oligothiophene Dyes." Materials 12, no. 20 (October 15, 2019): 3354. http://dx.doi.org/10.3390/ma12203354.

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Анотація:

This paper shows the first study of the synthesis of hybrid materials consisting of commercial Norit carbons and oligothiophenes. The study presents the influence of surface oxidation on dye deposition as well as changes of pore structure and surface chemistry. The hybrid materials were characterised using Raman spectroscopy, and scanning and transmission electron microscopy (SEM and HR-TEM, respectively). Confocal microscopy was employed to confirm the immobilization of oligomers on the surface of the carbons being investigated. Confocal microscopy measurements were additionally used to indicate whether dye molecules covered the entire surface of the selected commercial Norit samples. Specific surface area and pore structure parameters were determined by low-temperature nitrogen adsorption. Additionally, elemental content and surface chemistry were characterised by means of X-ray photoelectron spectroscopy (XPS) and combustion elemental analysis. Experimental results confirmed that oligothiophene dyes were adsorbed onto the internal part of the investigated pores of the carbon materials. The pores were assumed to have a slit-like shape, a set of 82 local adsorption isotherms was modelled for pores from 0.465 nm to 224 nm. Further, XPS data showed promising qualitative results regarding the surface characteristics and chemical composition of the hybrid materials obtained (sulphur content ranged from 1.40 to 1.45 at%). It was shown that the surface chemistry of activated carbon plays a key role in the dye deposition process. High surface heterogeneity after hydrothermal oxidation did not improve dye adsorption due to specific interactions between surface oxygen moieties and local electric charges in the oligothiophene molecules.

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15

Abdulkarimova, Roza. "Synthesis of carbon-containing composite materials in burning mode." Chemical Bulletin of Kazakh National University, no. 1 (March 31, 2012): 17. http://dx.doi.org/10.15328/chemb_2012_117-21.

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16

Malik, I. K., D. V. Miroshnichenko, and V. N. Shumeyko. "DEVELOPMENT OF DEVICE FOR PYROLYSIS OF CARBON-CONTAINING MATERIALS." Journal of Coal Chemistry 4 (April 2019): 37–43. http://dx.doi.org/10.31081/1681-309x-2019-0-4-37-43.

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17

Hwang, H. J., S. L. Jung, K. H. Cho, Y. J. Kim, and H. Jang. "Tribological performance of brake friction materials containing carbon nanotubes." Wear 268, no. 3-4 (February 2010): 519–25. http://dx.doi.org/10.1016/j.wear.2009.09.003.

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18

Yakovenko, O. S., L. Yu Matzui, L. L. Vovchenko, V. V. Oliynyk, V. L. Launetz, and A. V. Trukhanov. "Dielectric properties of composite materials containing aligned carbon nanotubes." Inorganic Materials 52, no. 11 (October 5, 2016): 1198–203. http://dx.doi.org/10.1134/s0020168516110182.

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19

Ebneth, Harold, Lothar Preis, Henning Giesecke, and Gerhard D. Wolf. "Metallized carbon fibres and composite materials containing these fibres." Carbon 23, no. 3 (1985): I. http://dx.doi.org/10.1016/0008-6223(85)90120-4.

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20

Zhiteneva, D. A., N. I. Sverdlova, A. A. Mikhalchan, and O. V. Astashkina. "Some features of production of silver-containing carbon materials." Fibre Chemistry 42, no. 5 (March 2011): 313–17. http://dx.doi.org/10.1007/s10692-011-9277-4.

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21

Kim, Jungjoon, Daeyoung Kim, and Hyunjoo Choi. "Development of Aluminum Matrix Composites Containing Nano-carbon Materials." Journal of Korean Powder Metallurgy Institute 28, no. 3 (June 30, 2021): 253–58. http://dx.doi.org/10.4150/kpmi.2021.28.3.253.

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22

Moura, Duarte, Rúben F. Pereira, and Inês C. Gonçalves. "Recent advances on bioprinting of hydrogels containing carbon materials." Materials Today Chemistry 23 (March 2022): 100617. http://dx.doi.org/10.1016/j.mtchem.2021.100617.

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23

Shpilevsky, E., O. Penyazkov, S. Filatov, G. Shilagardi, P. Tuvshintur, D. Timur-Bаtor, and D. Ulam-Orgikh. "Modification of Materials by Carbon Nanoparticles." Solid State Phenomena 271 (January 2018): 70–75. http://dx.doi.org/10.4028/www.scientific.net/ssp.271.70.

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Анотація:

The physical and chemical principles of the preparation of carbon nanoparticles (fullerenes, carbon nanotubes) and their complexes, and the methods for introducing nanoparticles into metal, ceramic and polymer matrices are considered. The most important properties of some materials containing these cluster molecules are given. It is shown that the introduction of carbon nanoparticles into materials, even in small fractions (up to 1.0 wt. %), significantly in some cases, at times alters their structure, electrical and tribological properties.

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24

Oyaidzu, Makoto, Hiromi Kimura, Toshihiko Nakahata, Yusuke Nishikawa, Masayuki Tokitani, Yasuhisa Oya, Hirotomo Iwakiri, Naoaki Yoshida, and Kenji Okuno. "Effects of chemical states of carbon on deuterium retention in carbon-containing materials." Journal of Nuclear Materials 367-370 (August 2007): 1522–26. http://dx.doi.org/10.1016/j.jnucmat.2007.04.015.

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25

Roshchin, M. N., N. A. Markachev, and V. A. Bogachev. "Tribology of carbon-containing materials in the carbon dioxide environment at high temperatures." IOP Conference Series: Materials Science and Engineering 862 (May 28, 2020): 062063. http://dx.doi.org/10.1088/1757-899x/862/6/062063.

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26

Shuklin, S. G., S. V. Buzilov, and D. S. Shuklin. "Modified polymers containing carbon nanotubes." Inorganic Materials: Applied Research 2, no. 2 (April 2011): 160–63. http://dx.doi.org/10.1134/s2075113311020195.

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27

Mansurov, Z. A., N. N. Mofa, and T. A. Shabanova. "Synthesis of Powder Materials with Particles Encapsulated into Carbon Containing Nanostructural Films." Eurasian Chemico-Technological Journal 12, no. 1 (November 10, 2009): 45. http://dx.doi.org/10.18321/ectj26.

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Анотація:

Particles of a complex structure: a quartz nucleus encapsulated into metalpolymer carbon containing nanosize film of the type “cluspol” have been obtained as a result of mechanochemical treatment of quartz with carbon containing organic compounds. Electronmicroscopic investigations show the diversity of morphological forms and nanostructural carbon formations on the surface of modified quartz particles. Depending on the regimes of mechanochemical treatment, the obtained materials are characterized by considerable changes in electromagnetic properties. The choice of carbon containing modifiers provided a highly active physico-chemical state of quartz of a prolonged action.

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28

Skrzypczyńska, Katarzyna, Andrzej Świątkowski, Ryszard Diduszko, and Lidia Dąbek. "Studies on Carbon Materials Produced from Salts with Anions Containing Carbon Atoms for Carbon Paste Electrode." Materials 14, no. 10 (May 11, 2021): 2480. http://dx.doi.org/10.3390/ma14102480.

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Анотація:

In the presented work, the properties of carbon materials obtained in the reaction of sodium bicarbonate (C-SB) and ammonium oxalate (C-AO) with magnesium by combustion synthesis were investigated. For the materials obtained in this way, the influence of the type of precursor on their properties was analyzed, including: Degree of crystallinity, porous structure, surface topography, and electrochemical properties. It has been shown that the products obtained in magnesiothermic process were found to contain largely the turbostratic carbon forming a petal-like graphene material. Both materials were used as modifiers of carbon paste electrodes, which were then used to determine the concentration of chlorophenol solutions by voltammetric method. It was shown that the peak current determined from the registered differential pulse voltammograms was mainly influenced by the volume of mesopores and the adsorption capacity of 4-chlorophenol for both obtained carbons.

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29

Ćirić-Marjanović, Gordana, Igor Pašti, and Slavko Mentus. "One-dimensional nitrogen-containing carbon nanostructures." Progress in Materials Science 69 (April 2015): 61–182. http://dx.doi.org/10.1016/j.pmatsci.2014.08.002.

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30

Long, Christopher M., Marc A. Nascarella, and Peter A. Valberg. "Carbon black vs. black carbon and other airborne materials containing elemental carbon: Physical and chemical distinctions." Environmental Pollution 181 (October 2013): 271–86. http://dx.doi.org/10.1016/j.envpol.2013.06.009.

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31

Khokhlova, G. P., and O. S. Efimova. "Properties of silicon-containing carbon fiber materials prepared using cellulose." Solid Fuel Chemistry 46, no. 3 (May 2012): 200–204. http://dx.doi.org/10.3103/s0361521912030068.

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32

Terekhova, E. N., O. I. Krivonos, and O. B. Belskaya. "Synthesis of Carbon-Containing Supports Based on Natural Raw Materials." Solid Fuel Chemistry 54, no. 6 (November 2020): 373–84. http://dx.doi.org/10.3103/s0361521920060129.

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33

Konwar, Lakhya Jyoti, Päivi Mäki-Arvela, and Jyri-Pekka Mikkola. "SO3H-Containing Functional Carbon Materials: Synthesis, Structure, and Acid Catalysis." Chemical Reviews 119, no. 22 (October 7, 2019): 11576–630. http://dx.doi.org/10.1021/acs.chemrev.9b00199.

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34

Cai, J., S. Bennici, J. Shen, and A. Auroux. "The acid–base properties of nitrogen-containing mesoporous carbon materials." Microporous and Mesoporous Materials 212 (August 2015): 156–68. http://dx.doi.org/10.1016/j.micromeso.2015.03.028.

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35

Ozaki, Jun-ichi, Kiyomi Nozawa, and Asao Oya. "Controlling Factor of Electrocatalytic Activity of Iron-containing Carbon Materials." Chemistry Letters 27, no. 7 (July 1998): 573–74. http://dx.doi.org/10.1246/cl.1998.573.

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36

Boardman, A. D., P. J. Baldwin, J. E. McNiff, and Yu G. Rapoport. "Nonlinear response of microwave guides containing carbon-loaded composite materials." Journal of Physics D: Applied Physics 38, no. 1 (December 17, 2004): 78–88. http://dx.doi.org/10.1088/0022-3727/38/1/014.

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37

Beine, Anna Katharina, Cornelia Broicher, Qingtao Hu, Lisa Mayerl, Timo Bisswanger, Heinrich Hartmann, Astrid Besmehn, Stefan Palkovits, An-Hui Lu, and Regina Palkovits. "Carbon nanotube containing polyacrylonitrile materials for the oxygen evolution reaction." Catalysis Science & Technology 8, no. 24 (2018): 6311–15. http://dx.doi.org/10.1039/c8cy01999a.

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38

Park, Sung, Young Pil Kwon, Hyuck Chon Kwon, Ju-Hyeon Lee, Hae-Weon Lee, and Jae Chun Lee. "Electrothermal Properties of Porous Ceramic Fiber Media Containing Carbon Materials." Journal of Nanoscience and Nanotechnology 7, no. 11 (November 1, 2007): 3776–79. http://dx.doi.org/10.1166/jnn.2007.023.

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Анотація:

Electrically regenerable porous ceramic fiber media containing nanoporous carbon from 2.5% to 19.2% have been prepared for adsorption/regeneration system. An experimental apparatus was built for in situ measurement of the sample weight during adsorption and electrothermal desorption of gaseous adsorbates. Adsorption and electrothermal desorption behavior of gaseous adsorbates on carbon contained porous ceramic fiber media was explained by physical and electrothermal properties of these materials measured in this work. In situ thermal desorption and adsorption experiments showthat a considerable amount of water vapor is adsorbed on the carbon contained media exposed to ambient air.

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39

Park, Sung, Young Pil Kwon, Hyuck Chon Kwon, Ju-Hyeon Lee, Hae-Weon Lee, and Jae Chun Lee. "Electrothermal Properties of Porous Ceramic Fiber Media Containing Carbon Materials." Journal of Nanoscience and Nanotechnology 7, no. 11 (November 1, 2007): 3776–79. http://dx.doi.org/10.1166/jnn.2007.18070.

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Анотація:

Electrically regenerable porous ceramic fiber media containing nanoporous carbon from 2.5% to 19.2% have been prepared for adsorption/regeneration system. An experimental apparatus was built for in situ measurement of the sample weight during adsorption and electrothermal desorption of gaseous adsorbates. Adsorption and electrothermal desorption behavior of gaseous adsorbates on carbon contained porous ceramic fiber media was explained by physical and electrothermal properties of these materials measured in this work. In situ thermal desorption and adsorption experiments showthat a considerable amount of water vapor is adsorbed on the carbon contained media exposed to ambient air.

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40

Linsmeier, Ch, J. Luthin, K. U. Klages, A. Wiltner, and P. Goldstra? "Formation and Erosion of Carbon-Containing Mixed Materials on Metals." Physica Scripta T111, no. 1 (2004): 86. http://dx.doi.org/10.1238/physica.topical.111a00086.

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41

Belonogov, Evgeny K., Sergey B. Kushev, Sergey A. Soldatenko, and Tatiana L. Turaeva. "Morphology and structure characteristics of nanoscale carbon materials containing graphene." Image Journal of Advanced Materials and Technologies 6, no. 4 (2021): 247–55. http://dx.doi.org/10.17277/jamt.2021.04.pp.247-255.

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Анотація:

A comprehensive study of the nanostructured powders (graphite GSM-2; Taunit-M; thermally expanded graphite (TEG)) by methods of transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffractometry (XRD), reflection high-energy electron diffraction (RHEED), Raman spectroscopy, was carried out. The experimental XRD halo was interpreted by superimposing theoretical diffraction maxima, and an X-ray amorphous graphite phase was revealed. It was found that the X-ray amorphous phase is characterized by the limiting degree of graphite nanostructuring. From the width of the diffraction rings, the maximum sizes of graphite nanocrystals were estimated, which do not exceed 5 and 10 nm in the [0001] and [ ] directions, respectively. Carbon nanotubes and plates of turbostratic graphene were revealed. The structural and morphological parameters of the nanostructured material “Taunit-M” have been established – multi-walled nanotubes with a diameter of up to 10 nm are combined through an interlayer of X-ray amorphous carbon into flat ribbons up to 40 nm wide. Dark-field TEM images (in reflections of ) revealed moiré patterns that appear on overlapping graphene sheets due to double diffraction of the electron beam. It was found that in thermally expanded graphite, the rotation of graphene sheets ranges from 3 to 4°. Within the graphene sheets, complete dislocations with the Burgers vector b = 1/2 were revealed [1010]. The Fourier analysis of moiré images made it possible to determine the mutual orientation of graphene sheets, to reveal regions of multilayer graphene, and to identify turbostratic graphene. It is shown that the combination of RHEED, TEM, and Fourier transformations of periodic contrast of electron microscopic images is a promising approach to the analysis of the substructure and morphology of nanoscale carbon materials containing graphene and other allotropic modifications of carbon.

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42

Tsai, Candace S. J., Nara Shin, and Anthony Formella. "Fiber emission of carbon nanotube containing materials for construction applications." Aerosol Science and Technology 55, no. 9 (April 19, 2021): 1001–13. http://dx.doi.org/10.1080/02786826.2021.1912285.

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43

Garcés, P., E. Zornoza, G. Catalá, F. Jiménez, and L. Gª Andión. "Función de apantallamiento de interferencia electromagnética de pastas de cemento con materiales carbonosos y cenizas volantes procesadas." Materiales de Construcción 60, no. 300 (December 15, 2010): 21–32. http://dx.doi.org/10.3989/mc.2010.51009.

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44

Posmyk, Andrzej, and Jerzy Myalski. "Producing of Composite Materials with Aluminium Alloy Matrix Containing Solid Lubricants." Solid State Phenomena 191 (August 2012): 67–74. http://dx.doi.org/10.4028/www.scientific.net/ssp.191.67.

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Анотація:

The paper presents the basics information about manufacturing and selected properties of composite with aluminium alloy matrix containing glassy carbon as a solid lubricant. The so far used method based on mixing the prepared glassy carbon particles with a liquid metal matrix, has been compared with a new method elaborated by the authors of the article. With this novel method carbon is introduced into a composite with the application of liquid carbon precursor and porous ceramic foams. It is then followed by precursor pyrolysis where, as the result, glassy carbon is obtained. Ceramic foams help liquid precursor penetrate the ceramic spheroid pores by forming a thin film of glassy carbon on their walls. The composite produced in such a way features uniform distribution of carbon within its entire volume which significantly improves tribological properties of the composite. Costly mixing procedure is not needed. Sliding friction coefficient of the new composite against cast iron (µ = 0.06-0.28 at wearing in and 0,12 after wearing in) is much lower than in case of composite containing only ceramic foam as a reinforcing phase (μ = 0.25-0.32).

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45

Han, Juhong, Dunbin Wang, and Peng Zhang. "Effect of nano and micro conductive materials on conductive properties of carbon fiber reinforced concrete." Nanotechnology Reviews 9, no. 1 (June 5, 2020): 445–54. http://dx.doi.org/10.1515/ntrev-2020-0034.

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AbstractIn this study, the pressure sensitivity and temperature sensitivity of the diphasic electric conduction concrete were investigated by measuring the resistivity using the four-electrode method. The diphasic electric conduction concrete was obtained by mixing nano and micro conductive materials (carbon nanofibers, nano carbon black and steel slag powder) into the carbon fiber reinforced concrete (CFRC). The results indicated that, with the increase of conduction time, the resistivity of CFRC decreased slightly at the initial stage and then became steady, while the resistivity of CFRC containing nano carbon black had a sharp decrease at the dosage of 0.6%. With the increase of compression load, the coefficient of resistivity variation of CFRC containing nano carbon black and steel slag powder changed little. The coefficient of resistivity variation increased with the increase of steel slag powder in the dry environment, and CFRC had preferable pressure sensitivity when the mass fractions of carbon fiber and carbon nanofiber were 0.4% and 0.6%, respectively. Besides, in the humid environment, the coefficient of resistivity variation decreased with the increase of steel slag powder, and the diphasic electric conduction concrete containing 0.4% carbon fibers and 20% steel slag powder had the best pressure sensitivity under the damp environment. Moreover, in the dry environment, CFRC containing nano and micro conductive materials presented better temperature sensitivity in the heating stage than in the cooling stage no matter carbon nanofiber, nano carbon black or steel slag powder was used, especially for the CFRC containing steel slag powder.

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46

Behera, Satyananda, and Ritwik Sarkar. "Nano carbon containing low carbon magnesia carbon refractory: an overview." Protection of Metals and Physical Chemistry of Surfaces 52, no. 3 (May 2016): 467–74. http://dx.doi.org/10.1134/s2070205116030059.

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47

Bertolotti, M., R. Li Voti, G. Liakhou, and T. A. Ezquerra. "Thermal diffusivity of polyethylene containing carbon." Materials Letters 17, no. 3-4 (August 1993): 171–74. http://dx.doi.org/10.1016/0167-577x(93)90079-d.

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48

Aref'yeva, Ol'ga Dmitriyevna, Lyudmila Alekseyevna Zemnukhova, Anna Vasil'yevna Kovekhova, Nataliya Pavlovna Morgun, and Mikhail Aleksandrovich Tsvetnov. "OBTAINING, COMPOSITION AND PROPERTIES OF CARBON-CONTAINING MATERIALS FROM PLANT RAW." chemistry of plant raw material, no. 2 (June 10, 2020): 381–88. http://dx.doi.org/10.14258/jcprm.2020026292.

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In this work, we obtained samples of carbon-containing materials from fibrous residues of rice husks and straw, husks of soybean and sunflower, cedar shells at temperatures of 300, 400, and 500 °С. The ash content (3.0–9.3%), the content of water-soluble substances (1.2–7.6%), the mass fraction of moisture (3.0–6.2%), and the pH values of the aqueous extract (5.4– 8.8) and bulk density (66–481 kg/m3) were determined. The IR spectra of carbon-containing materials from plant materials contain more pronounced bands of oxygen-containing functional groups in comparison with medical preparations and BAH coal. The samples are in an X-ray amorphous state, and with increasing firing temperature, the degree of carbon ordering networks increases. All samples have a layered fiber structure, which differs depending on the type of raw material and temperature. The sorption activity was studied with the respect to iodine (7.6–58.4%), methylene blue (4.2–35.8 mg/g) and methyl orange (5.2–64.4 mg/g), which changes depending on the type of raw material and the temperature of carbonization. It was shown that with an increasing firing temperature, the sorption activity of the samples increases. Samples obtained at 500 °C have a high iodine absorption capacity (50.8–58.4%), comparable with BAH activated carbon (60%), and can be used as inexpensive porous carbon materials.

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Liu, Xiaoyan, Tingchen Fang, and Junqing Zuo. "Effect of Nano-Materials on Autogenous Shrinkage Properties of Cement Based Materials." Symmetry 11, no. 9 (September 9, 2019): 1144. http://dx.doi.org/10.3390/sym11091144.

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This paper presents an experimental investigation on the effect of nano-montmorillonite, carbon nanotubes, and nano calcium carbonate on autogenous shrinkage of cement based materials. Cement paste with different nano-montmorillonite dosage (1.0 wt.%, 2.0 wt.%, 3.0 wt.%), carbon nanotubes dosage (0.1 wt.%, 0.2 wt.%, 0.3 wt.%), and nano calcium carbonate dosage (1.0 wt.%, 2.0 wt.%, 3.0 wt.%) were compared with the reference group to assess the effects of nano-materials on cement paste. Results show that autogenous shrinkage of cement based materials containing nano-materials mainly occurs in the first 72 h. Nano-materials decrease the autogenous shrinkage of the investigated cement based materials at all ages. Compared with that of the reference group at the age of 168 h, the autogenous shrinkage of NM-modified cement based composites containing 3.0 wt.% NM decreased by as much as 57.4%; the autogenous shrinkage of CNTs-modified cement based composites containing 0.3 wt.% CNTs decreased by as much as 19.4%; the autogenous shrinkage of NC-modified cement based composites containing 2.0 wt.% NC decreased by as much as 17.1%. Electrochemical AC (Alternating Current) impedance spectroscopy results show that the resistance of the pore solution electrolyte of specimens containing nano-materials increases with age, and is less than that of specimens without nano-materials, which illustrates that the pore size of nano-modified cement based material is finer and autogenous shrinkage is smaller. Scanning electron microscope results show that the structure of cement matrix is denser with more hydration products by adding nano-materials. Nano-montmorillonite releases water to reduce self-drying effect during the process of hydration for its well water swelling. Carbon nanotubes have the nanometer filling effect and form a continuous network to restrain the early autogenous shrinkage of cement paste. Nano calcium carbonate not only decreases the porosity of the cement paste, but also reacts with tricalcium aluminate to generate the expanded product calcium carboaluminate for compensating autogenous shrinkage of cement paste.

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Dugin, N., T. Zaboronkova, and E. Myasnikov. "Using Carbon-Based Composite Materials for Manufacturing C-range Antenna Devices." Latvian Journal of Physics and Technical Sciences 53, no. 5 (October 1, 2016): 17–23. http://dx.doi.org/10.1515/lpts-2016-0032.

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Abstract C-range horn antenna made of a graphene-containing carbon-based composite material has been developed. Electrodynamic characteristics of the developed antenna and the identical metal antenna have been measured in the frequency range of 4.6–4.9 GHz. We have created two prototypes of horn antennas made of (i) carbon fiber and (ii) carbon fabric. It has been shown that the horn antenna made of graphene-containing composite material is capable of efficiently operating in the C-range frequency and possesses almost the same electrodynamic characteristics as the conventional metal antenna of the same geometry and size. However, the carbon-based antenna has enhanced stability in the wide range of temperatures to compare with the corresponding metal antenna.

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