公开(公告)号：WO1990015035A1

公开(公告)日：1990-12-13

申请号：PCT/US1990003281

申请日：1990-06-07

Applicant: BENCHMARK STRUCTURAL CERAMICS CORPORATION

Inventor： BENCHMARK STRUCTURAL CERAMICS CORPORATION ,  HIDA, George ,  HIDA, Rodica

IPC: C04B35/36

CPC classification number: C04B38/009 ,  C04B35/597 ,  C30B25/005 ,  C30B29/38

Abstract: A novel composite material consisting of at least 70 weight percent of single-phase beta sialon and at least 20 weight percent of alpha-alumina may be made by the apparatus, wherein the raw materials are mixed in a mill (12), pressed (32), further reacted in reactor (36) then crushed (40) and sieved (44). The material is then heated in a furnace (48) under nitrogen (52) and finally crushed (56) and sieved (60). The beta-sialon is of the formula Si6-zAlzOzN8-z, wherein z is form 2.5 to 3.5. The composite material contains no silicon nitride. Sintered products made from such composite material contain no glassy phase, contain no silicon nitride, and have superior thermal and mechanical properties.

Abstract translation: 可以通过该装置制备由至少70重量％的单相β-赛隆和至少20重量％的α-氧化铝组成的新型复合材料，其中原料在研磨机（12）中混合，压制（32 ），进一步在反应器（36）中反应，然后粉碎（40）并过筛（44）。 然后将材料在氮气（52）下在炉（48）中加热，最后粉碎（56）并过筛（60）。 β-赛隆配方为Si6-zAlzOzN8-z，其中z为2.5-3.5。 复合材料不含氮化硅。 由这种复合材料制成的烧结产品不含玻璃相，不含氮化硅，具有优异的热和机械性能。