公开(公告)号：US4123286A

公开(公告)日：1978-10-31

申请号：US754648

申请日：1976-12-27

申请人： John A. Coppola ,  Harry A. Lawler ,  Carl H. McMurtry

发明人： John A. Coppola ,  Harry A. Lawler ,  Carl H. McMurtry

IPC分类号： C01B31/36 ,  C04B35/565 ,  H05K1/03

CPC分类号： C04B35/565

摘要： A powder containing substantial amounts of alpha phase silicon carbide suitable for use in subsequent sintering operations to obtain a high-density, high-strength ceramic product is described. The powder may consist substantially entirely of alpha silicon carbide or may consist of mixtures of alpha and beta phase silicon carbide. The silicon carbide powder of the present invention has an average particle size of from about 0.10 to about 2.50 microns and may contain maximum amounts of the following materials by weight based upon 100 parts of powder.______________________________________ SiO.sub.2 2.00 Free Silicon 0.25 Iron 0.50 Alkali and Alkaline Earth Metals 0.50 Total Metal Oxides 3.75 ______________________________________ Sinterable powders and methods of producing sintered products from the powders are also described.

摘要翻译： 描述了适用于后续烧结操作以获得高密度高强度陶瓷产品的大量α相碳化硅的粉末。 粉末可以基本上由α碳化硅组成，或者可以由α相和β相碳化硅的混合物组成。 本发明的碳化硅粉末具有约0.10至约2.50微米的平均粒度，并且可以含有最大量的以100重量份的粉末为基准的最大量的以下材料。 } SiO2 2.00}游离硅0.25}铁0.50}碱金属和碱土}金属0.50}总金属氧化物3.75}还描述了可从粉末生产烧结产品的可烧结粉末和方法。