SINTERED SILICON NITRIDE CERAMIC ARTICLES HAVING SURFACE LAYERS OF CONTROLLED COMPOSITION
摘要
Sintered silicon nitride-silica-yttria ceramic articles having silica-rich or yttria-rich casing layers are disclosed. The surface layers are formed by sintering pre-compacted bodies in a powder setter bed to produce unitary sintered bodies having surface layers in which the atom ratio of yttrium to silicon has a smooth gradient from the surface of the article to the interior body of the article.
申请公布号
DE3270494(D1)
申请公布日期
1986.05.15
申请号
DE19823270494
申请日期
1982.12.03
申请人
GTE LABORATORIES INCORPORATED
发明人
MOSCHETTI, ANTHONY P.;SMITH, J. THOMAS;QUACKENBUSH, CARR LANE W.;LINGERTAT, HELMUT;NEHRING, VINCENT W.