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公开(公告)号：US20090011211A1
公开(公告)日：2009-01-08
申请号：US12074703
申请日：2008-03-05
CPC分类号： C22C1/1036 , B22D19/14 , B22D27/08 , B22F2202/01 , B22F2998/00 , C22C2001/1047 , C22C47/08
摘要： A metal matrix composite (MMC) material that is castable, or can be rendered castable, is melted and cast into a mold or crucible, and at least a portion of the plurality of reinforcement bodies is permitted to at least partially settle out of their suspension in the molten matrix metal. The casting is solidified, and the sparsely loaded supernatant is separated from the zone of the casting containing the sediment—either by cutting, sawing, etc., or by decanting the supernatant when the casting was still in a molten condition. In a preferred embodiment, during the settling and/or the solidification process, mechanical energy, such as in the form of oscillations, is applied to the MMC melt. The applied energy permits the reinforcement bodies to nestle and pack more efficiently, thereby increasing their volumetric loading in the cast composite.
摘要翻译： 可浇注或可浇铸的金属基质复合材料（MMC）材料被熔化并浇注到模具或坩埚中，并且允许多个增强体的至少一部分至少部分地从其悬浮液中沉淀出来 在熔融基质金属中。 将铸件固化，通过切割，锯切等将稀疏负载的上清液从含有沉淀物的铸件区域分离，或者当铸件仍处于熔融状态时通过倾析上清液。 在优选的实施方案中，在沉降和/或凝固过程期间，将机械能，例如以振荡的形式施加到MMC熔体。 所施加的能量允许增强体更有效地嵌套和包装，从而增加其在铸造复合材料中的体积载荷。
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公开(公告)号：US4826643A
公开(公告)日：1989-05-02
申请号：US212072
申请日：1988-06-24
申请人： Marc S. Newkirk , Jerry Weinstein
发明人： Marc S. Newkirk , Jerry Weinstein
CPC分类号： C04B35/652
摘要： A method of producing self-supporting ceramic structures includes providing a first self-supporting ceramic body comprising (i) a polycrystalline oxidation reaction product formed upon oxidation of a first molten parent metal with a first oxidant, and (ii) interconnected porosity at least partially accessible from one or more surfaces of said first ceramic body. A second ceramic body is used to form, by reaction with a vapor-phase oxidant, a second polycrystalline material which is infiltrated into the porosity of at least a zone of said first ceramic body.
摘要翻译： 一种生产自支撑陶瓷结构的方法包括提供第一自支撑陶瓷体，其包括（i）在第一熔融母体金属与第一氧化剂氧化时形成的多晶氧化反应产物，和（ii）至少部分地互连的孔隙 可从所述第一陶瓷体的一个或多个表面接近。 第二陶瓷体用于通过与气相氧化剂反应形成第二多晶材料，所述第二多晶材料渗透到所述第一陶瓷体的至少一个区域的孔隙中。
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