Plasma spraying of zirconium carbide ? hafnium carbide ? tungsten cermets

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F09%3A00021452" target="_blank" >RIV/60461373:22310/09:00021452 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Plasma spraying of zirconium carbide ? hafnium carbide ? tungsten cermets

Original language description

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. XRD, XRF, mercury porosimetry, dilatometry and various microscopic structural te

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JH - Ceramics, fire-proof materials and glass

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Powder Metallurgy Progress

ISSN

1335-8987

e-ISSN

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Volume of the periodical

9

Issue of the periodical within the volume

1

Country of publishing house

SK - SLOVAKIA

Number of pages

16

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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