Plasma spraying of refractory cermets by the water-stabilized spray (WSP?) system

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F09%3A00021451" target="_blank" >RIV/60461373:22310/09:00021451 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389021:_____/09:00335339

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Plasma spraying of refractory cermets by the water-stabilized spray (WSP?) system

Popis výsledku v původním jazyce

Among important metal matrix composites are cemented carbides, predominantly tungsten carbide with cobalt binder. For high temperature applications, e.g., in nuclear or International thermonuclear reactor (i.e. nuclear fusion) technology, metals with a higher melting point, namely, tungsten, are preferred. Tungsten carbides with a decomposition temperature of 2785°C should also be replaced by, for example, ZrC. A mixture of W powder was prepared with 3 to 20 vol. % of ZrC. This feedstock having a spheroidal character was fed into the plasma of the water-stabilized plasma (WSP?) gun by means of an inert gas carrier. Coatings with thickness of about 1 mm were sprayed on graphite substrates with cylindric shape. Pure tungsten and pure ZrC were sprayed under similar conditions as the cermet. Microhardness, surface roughness, XRD, XRF, dilatometry and Raman microspectroscopy were used for the coatings characterization. ZrC coatings are hard and their elastic modulus is high. They can serve

Název v anglickém jazyce

Plasma spraying of refractory cermets by the water-stabilized spray (WSP?) system

Popis výsledku anglicky

Among important metal matrix composites are cemented carbides, predominantly tungsten carbide with cobalt binder. For high temperature applications, e.g., in nuclear or International thermonuclear reactor (i.e. nuclear fusion) technology, metals with a higher melting point, namely, tungsten, are preferred. Tungsten carbides with a decomposition temperature of 2785°C should also be replaced by, for example, ZrC. A mixture of W powder was prepared with 3 to 20 vol. % of ZrC. This feedstock having a spheroidal character was fed into the plasma of the water-stabilized plasma (WSP?) gun by means of an inert gas carrier. Coatings with thickness of about 1 mm were sprayed on graphite substrates with cylindric shape. Pure tungsten and pure ZrC were sprayed under similar conditions as the cermet. Microhardness, surface roughness, XRD, XRF, dilatometry and Raman microspectroscopy were used for the coatings characterization. ZrC coatings are hard and their elastic modulus is high. They can serve

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Acta Tech.CSAV

ISSN

0001-7043

e-ISSN

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Svazek periodika

54

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

13

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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