公开(公告)号：US4205033A

公开(公告)日：1980-05-27

申请号：US935416

申请日：1978-08-22

申请人： Yoshinori Hattori ,  Tamotu Miyachi

发明人： Yoshinori Hattori ,  Tamotu Miyachi

IPC分类号： C04B35/10 ,  C04B35/584 ,  C04B35/593 ,  C04B35/597 ,  C04B35/58

CPC分类号： C04B35/597 ,  C04B35/584 ,  C04B35/593

摘要： A process for producing a compact silicon nitride ceramic product which comprises molding a powder mixture of Si.sub.3 N.sub.4, Ta.sub.2 O.sub.5 and Al.sub.2 O.sub.3 in proportions defined by the region A, B, C, D in the FIGURE within the ranges of 65.0 to 96.0% by volume Si.sub.3 N.sub.4, 1.0 to 32.0% by volume Ta.sub.2 O.sub.5 and 3.0 to 20.0% by volume Al.sub.2 O.sub.3, and then firing the powder mixture in a non-oxidizing atmosphere containing a carbon compound; or hot-pressing the powder mixture; in a graphite mold.

摘要翻译： 一种制造紧凑型氮化硅陶瓷产品的方法，其包括在图中的区域A，B，C，D定义的范围内，以65.0至96.0体积％Si 3 N 4的范围模制Si 3 N 4，Ta 2 O 5和Al 2 O 3的粉末混合物， 1.0〜32.0体积％的Ta 2 O 5和3.0〜20.0体积％的Al 2 O 3，然后在含有碳化合物的非氧化性气氛中烧成粉末混合物; 或热压粉末混合物; 在石墨模具中。