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%2F61389021%3A_____%2F09%3A00336035" target="_blank" >RIV/61389021:_____/09:00336035 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

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 thermonuclear reactors 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. Bulk parts can be produced by powder metallurgy techniques but plasma spraying of cermets could be an interesting alternative. Amixture 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 of a thickness of about 1 mm were sprayed on various substrates, namely, graphite. Pure tungsten and pure ZrC were sprayed under similar conditions. Microhardness, surface roughness, XRD, XRF, dilatometry and spectroscopic techniques (Raman microspectroscopy) were used

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 thermonuclear reactors 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. Bulk parts can be produced by powder metallurgy techniques but plasma spraying of cermets could be an interesting alternative. Amixture 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 of a thickness of about 1 mm were sprayed on various substrates, namely, graphite. Pure tungsten and pure ZrC were sprayed under similar conditions. Microhardness, surface roughness, XRD, XRF, dilatometry and spectroscopic techniques (Raman microspectroscopy) were used

Druh

D - Stať ve sborníku

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

—

Projekt

—

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 statě ve sborníku

ITSC 2009 Proceedings from the 2009 International Thermal Spray Conference

ISBN

978-1-61503-004-0

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

—

Název nakladatele

ITSC Partner Societies

Místo vydání

Las Vegas

Místo konání akce

Las Vegas

Datum konání akce

4. 5. 2009

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—