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1.发明公开
公开(公告)号：EP1058590A1
公开(公告)日：2000-12-13
申请号：EP99904386.2
申请日：1999-01-28
摘要： Disclosed are economical methods and apparatus for high throughput pressure infiltration casting. Methods of the invention use a mold vessel (12) as an evacuation chamber along with an evacuation cap (40) to produce superior quality near-net shape finished cast parts with low porosity. Other methods of the invention use an improved heat transfer technique for directionally solidifying molten infiltrant at an increased rate to increase further the throughput of the pressure infiltration casting cycle. The invention also provides appartus for practicing methods for high throughput pressure infiltration casting. One embodiment of an apparatus of the invention is a removable evacuation cap, often used in conjunction with a fill tube (70). Another apparatus embodiment is an evacuation cap coupled to a mold vessel which is used as an evacuation chamber.
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公开(公告)号：EP1432840A2
公开(公告)日：2004-06-30
申请号：EP02807627.1
申请日：2002-05-14
IPC分类号： C22C49/14
CPC分类号： H01L23/3733 , B22F2998/00 , C22C9/00 , C22C47/025 , C22C47/06 , C22C47/08 , C22C49/00 , H01L2924/0002 , H01L2924/00
摘要： Disclosed are methods and materials for preparing metal matrix composite (MMC) components that have low weight, good thermal conductivity and a controllable in-plane coefficient of thermal expansion. One embodiment of the invention features a metal matrix composite that includes a metal alloy and random in-plane discontinuous fibers. In some embodiments, the metal alloy includes aluminum, copper or magnesium. In certain embodiments, the metal matrix composite includes additives that enable solution hardening. In other embodiments, the metal matrix composite includes additives that enable precipitation hardening. Another embodiment of the invention features a method of manufacturing a metal matrix composite. The method includes contacting random in-plane discontinuous fibers with a binder, and pressurizing the random in-plane discontinuous fibers and the binder to form a bound preform. The preform is pressurized to a pressure greater than the molten metal capillary breakthrough pressure of the bound preform. Subsequently, the bound preform is placed in a mold, infiltrated with a molten infiltrant, and the molten toform infiltrant is cooled the metal matrix composite.
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公开(公告)号：EP1058590B1
公开(公告)日：2004-05-12
申请号：EP99904386.2
申请日：1999-01-28
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