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Plasma spraying of zirconium carbide – hafnium carbide – tungsten cermets
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SYSNO ASEP 0335187 Druh ASEP J - Článek v odborném periodiku Zařazení RIV Záznam nebyl označen do RIV Poddruh J Ostatní články Název Plasma spraying of zirconium carbide – hafnium carbide – tungsten cermets Překlad názvu Plazmové nástřiky wolframových cermetů s karbidem zirkonia a karbidem hafnia Tvůrce(i) Brožek, Vlastimil (UFP-V) RID
Ctibor, Pavel (UFP-V) RID, ORCID
Cheong, D.-I. (KR)
Yang, S.-H. (KR)Zdroj.dok. Powder Metallurgy Progress - ISSN 1335-8987
Roč. 9, č. 1 (2009), s. 49-64Poč.str. 16 s. Jazyk dok. eng - angličtina Země vyd. SK - Slovensko Klíč. slova Plasma spraying ; cermet coatings ; microhardness ; zirconium carbide ; hafnium carbide ; tungsten ; water stabilized plasma Vědní obor RIV JH - Keramika, žáruvzdorné materiály a skla CEZ AV0Z20430508 - UFP-V (2005-2011) Anotace Preparation of coatings and self-standing parts from materials with the highest melting points is allowed only by limited number of techniques. Plasma torch WSP® with exit nozzle plasma temperature about 30 000 K, operating at 150 kW, enables treatment of such refractories with extreme melting points in amount of tens of kilograms per hour. A mixture of the W powder was prepared with 10 vol. % to 20 vol. % of ZrC or HfC. This feedstock having spheroidal character and micrometric size was fed into the plasma of the water stabilized plasma torch (WSP®) by means of inert gas carrying. Coatings thick up to 2 mm were sprayed on various substrates, namely graphite. Self-standing bodies were obtained by substrate removal. Pure tungsten and pure zirconium carbide with melting point 3520°C were sprayed at similar conditions. Various ways of coating improvement by shrouding and sample controlled cooling were tested. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2010
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