Effect of [Y.sub.2][O.sub.3] and Si[O.sub.2] additions on the phase formation and properties of the hot-pressed boron carbonitride composite

The dependence of phase composition and properties of the BCN composite with additions of [Y.sub.2][O.sub.3] and Si[O.sub.2] (quartz glass) on hot-pressing temperature is studied. It is established that new strengthening phases form with the composite during reaction pressure sintering. The optimum...

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Published inPowder metallurgy and metal ceramics Vol. 51; no. 9-10; p. 572
Main Authors Kovalchenko, M.S, Dubovik, T.V, Rogozinska, A.O, Bega, M.D, Subbotin, V.I, Grebenok, T.P, Portnov, O.P
Format Journal Article
LanguageEnglish
Published Springer 01.01.2013
Subjects
Boron nitride
Dielectrics
Electrical conductivity
Sintering
Thermal properties
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Summary:The dependence of phase composition and properties of the BCN composite with additions of [Y.sub.2][O.sub.3] and Si[O.sub.2] (quartz glass) on hot-pressing temperature is studied. It is established that new strengthening phases form with the composite during reaction pressure sintering. The optimum conditions for producing the BCN composite are found. The BCN composite has high thermal strength, oxidation resistance, and electrical insulating properties. Keywords: boron carbonitride, yttrium oxide, quartz glass, hot pressing, phase formation, composite. UDC 661.65:661.55:621.762
ISSN:1068-1302