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公开(公告)号:US5908587A
公开(公告)日:1999-06-01
申请号:US882940
申请日:1997-06-26
IPC分类号: B28B1/24 , B22F3/22 , B28B1/52 , C04B24/38 , C04B30/02 , C04B35/622 , C04B40/06 , C22C47/00 , C22C47/06 , B05B3/00 , B29C35/02
CPC分类号: B22F3/225 , B22F3/222 , C04B24/383 , C04B30/02 , C04B35/622 , C04B40/0683 , C22C47/00 , C22C47/06 , B22F2998/00
摘要: Method of making porous, fibrillose bodies from fibrils bonded together into a self-supporting structure. A mixture of fibrils and a viscous, non-newtonian, liquid vehicle including an organic hydrosorbent and water is (1) injected into a mold, (2) frozen in the mold to form a frozen precursor of the article, (3) ejected from the mold while still frozen, (4) freeze-dried, and (5) finally heated to remove the hydrosorbent and bond the particles together. The process is particularly effective for making fibrillose preforms for infiltrating with metal in the manufacture of metal matrix composites.
摘要翻译: 从原纤维制造多孔的纤维原纤维结合在一起成为自支撑结构的方法。 原纤维和粘性非牛顿液体载体(包括有机水溶胶和水)的混合物(1)注入模具中,(2)在模具中冷冻以形成制品的冷冻前体,(3)从 模具仍然冷冻,(4)冷冻干燥,(5)最后加热去除水溶胶,并将颗粒粘合在一起。 该方法在金属基质复合材料的制造中制备用于浸入金属的原纤维预制件是特别有效的。