Počet záznamů: 1  

Plasma spraying of zirconium carbide – hafnium carbide – tungsten cermets

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    SYSNO ASEP0335187
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVZáznam nebyl označen do RIV
    Poddruh JOstatní články
    NázevPlasma spraying of zirconium carbide – hafnium carbide – tungsten cermets
    Překlad názvuPlazmové nástřiky wolframových cermetů s karbidem zirkonia a karbidem hafnia
    Tvůrce(i) Brožek, Vlastimil (UFP-V) RID
    Ctibor, Pavel (UFP-V) RID
    Cheong, D.-I. (KR)
    Yang, S.-H. (KR)
    Zdroj.dok.Powder Metallurgy Progress - ISSN 1335-8987
    Roč. 9, č. 1 (2009), s. 49-64
    Poč.str.16 s.
    Jazyk dok.eng - angličtina
    Země vyd.SK - Slovensko
    Klíč. slovaPlasma spraying ; cermet coatings ; microhardness ; zirconium carbide ; hafnium carbide ; tungsten ; water stabilized plasma
    Vědní obor RIVJH - Keramika, žáruvzdorné materiály a skla
    CEZAV0Z20430508 - UFP-V (2005-2011)
    AnotacePreparation 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.
    PracovištěÚstav fyziky plazmatu
    KontaktVladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975
    Rok sběru2010
Počet záznamů: 1