PSI - Issue 40
M.V. Fedorov et al. / Procedia Structural Integrity 40 (2022) 136–144 Fedorov M. V. at al. / Structural Integrity Procedia 00 (2019) 000 – 000
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5. Conclusion. In this experimental investigation of hardmetal powder (WC-Co (8%)) consisting of refractory tungsten carbide (WC) and cobalt (Co) powders (8%) phase transitions during solid-phase sintering, the following conclusions can be drawn: 1. Micro X-ray spectral and X-ray phase analysis of the initial WC-Co (8%), WC-WC and Co powders found that the powders contain an insignificant amount of impurities in the form of production products. It was also found that the composition of the initial cobalt p owder consists of a mixture of β - cobalt and α -cobalt phases. 2. Thermal and phase analysis of the WC-Co (8%) carbide powder and its main components separately WC WC and Co powder makes it possible to suggest that cobalt reacts with the crucible, increasing the mass of the sample. Acknowledgements The authors express their sincere gratitude to the staff of IGABM SB RAS for carrying out X-ray microscopic, thermal, and X-ray phase analysis References Loginov, Yu.N., 1984. Texnologiya proizvodstva zagotovok iz tverdyx splavov [Technology for the production of workpieces from hard alloys]. UPI im. S.M.Kirova, Sverdlovsk, pp.53. [in Russian]. Panov, V.S., Chuvilin A.M., Falkovskij, V.A., 2004. Texnologiya i svojstva specheniya tverdy`x splavov i izdelij iz nix [Technology and properties of sintering of hard alloys and products from them]. MISIS, Moscow, pp. 463. [in Russian]. Levashov, E.A., Panov, V.S., Konyashin, I.Yu., 1984. Istoriya otechestvennyx tverdyx splavov Nacionalnyj issledovatelskij texnologicheskij universitet «MISiS» [History of domestic hard alloys National Research Technological University "MISiS"]. MISIS, Moskva, P. 14 – 21. [in Russian]. Shaskolskaya, M. P., 1984. Kristallografiya [Crystallography]. Vysshaya shkola, Moscow, pp. 351. [in Russian]. Shmatov, A.A., Devoyno, O.G., Lisovskaya, Yu.O., 2012. Modifitsirovaniye tverdogo splava metodom TGKHO [Modification of hard alloy by the TGHO method]. Polzunovskiy vestnik 1/1 [Polzunovsky Bulletin 1/1]. 359 – 364. [in Russian]. Samotugin, S.S., 2016. Svoystva i rabotosposobnost instrumentalnykh tverdykh splavov posle plazmennogo poverkhnostnogo modifitsirovaniya [Properties and performance of instrumental hard alloys after plasma surface modification]. Uprochnyayushchiye tekhnologi i pokrytiya 5(137) [Strengthening technologies and coatings 5(137)]. 25 – 32. [in Russian]. Samotugin, S.S., Kudinova, E. V., Nesterov, O. Yu., 2014. Issledovaniye ekspluatatsionnoy stoykosti tverdosplavnykh plastin posle plazmennoy poverkhnostnoy modifikatsii [Investigation of the operational stability of hard-alloy plates after plasma surface modification]. Zakhist metalurgіynikh mashin vіd polomok 16 [Zakhist of metallurgical machines from breakdowns 16]. 201 – 206. [in Russian]. Ahman, L., Stridh, B., Wissell, H., 1985. Diffusion and continuous wear of high speed steel cutting tools. Materials science techn. 1. 156 – 162. DOI:10.1179/MST.1985.1.2.156 Gabelkov, S.V., Tarasov, R.V., Poltavcev, N.S., 2011. Evolyuciya fazovogo sostava pri termicheskom razlozhenii gidroksida magniya [Evolution of the phase composition during thermal decomposition of magnesium hydroxide]. Voprosy atomnoj nauki i texniki 2 [Atomic Science and Technology Issues 2]. 72 – 76. [in Russian]. Barry, A.H., 2014. Microstructure and mechanical properties of bulk highly faulted fcc/hcp nanostructured cobalt microstructures. Materials characterization 91. 26 – 33. DOI:10.1016/j.matchar.2014.02.004 Manouchehri, I., Kameli, P., Salamati, H., 2011. Facile Synthesis of Co3O4/CoO Nanoparticles by Thermal Treatment of Ball-Milled Precursors. Journal of Superconductivity and Novel Magnetism 24(6). 1907 – 1910. Yılmaz, F. et al. , 2013. Fabrication of cobalt nano-particles by pulsed wire evaporation method in nitrogen atmosphere. Powder Technology 235. 1047 – 1052. Kudlash, A.N., Vorobyeva, S.A., Lesnikovich, A.I., Yanushkevich, K.I., 2008. Nanodispersnyy kobalt. poluchennyy mezhfaznym sintezom [Yanushkevich Nanodispersed cobalt obtained by interfacial synthesis]. Vestnik Bgu. Ser. 2. 1 [Bulletin of BGU. Ser. 2. 1.]. 22 – 32.
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