公开(公告)号：US5316988A

公开(公告)日：1994-05-31

申请号：US100888

申请日：1993-08-02

申请人： Michael H. O'Brien ,  Blair H. Park

发明人： Michael H. O'Brien ,  Blair H. Park

IPC分类号： C04B35/597 ,  C04B35/58

CPC分类号： C04B35/597

摘要： A method of fabricating a SiAlON ceramic body includes: a) combining quantities of Si.sub.3 N.sub.4, Al.sub.2 O.sub.3 and CeO.sub.2 to produce a mixture; b) forming the mixture into a desired body shape; c) heating the body to a densification temperature of from about 1550.degree. C. to about 1850.degree. C.; c) maintaining the body at the densification temperature for a period of time effective to densify the body; d) cooling the densified body to a devitrification temperature of from about 1200.degree. C. to about 1400.degree. C.; and e) maintaining the densified body at the devitrification temperature for a period of time effective to produce a .beta.'-SiAlON crystalline phase in the body having elemental or compound form Ce incorporated in the .beta.'-SiAlON crystalline phase. Further, a SiAlON ceramic body comprises: a) an amorphous phase; and b) a crystalline phase, the crystalline phase comprising .beta.'-SiAlON having lattice substituted elemental or compound form Ce.

摘要翻译： 制造SiAlON陶瓷体的方法包括：a）将Si 3 N 4，Al 2 O 3和CeO 2的组合量混合以产生混合物; b）将混合物形成所需的体形; c）将本体加热至约1550℃至约1850℃的致密化温度。 c）将身体保持在致密化温度下一段有效的时间以使身体致密化; d）将致密体冷却至约1200℃至约1400℃的失透温度; 并且e）将致密体保持在失透温度下一段时间，以有效地在体内具有并入β-SiAlON结晶相中的元素或化合物形式的Ce中的β'-SiAlON结晶相。 此外，SiAlON陶瓷体包括：a）非晶相; 和b）结晶相，所述结晶相包含具有晶格取代的元素或化合物形式的Ce的β-SiAlON。