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公开(公告)号：US4961778A
公开(公告)日：1990-10-09
申请号：US143560
申请日：1988-01-13
CPC分类号： B22F3/156 , B22F3/15 , C22C1/051 , B22F2998/00
摘要： Substantially dense, void-free ceramic-metal composites are prepared from components characterized by chemical incompatibility and non-wetting behavior. The composites have a final chemistry similar to the starting chemistry and microstructures characterized by ceramic grains similar in size to the starting powder and the presence of metal phase. A method for producing the composites requires forming a homogeneous mixture of ceramic-metal, heating the mixture to a temperature that approximates but is below the temperature at which the metal begins to flow and presssing the mixture at such pressure that compaction and densification of the mixture occurs and an induced temperature spike occurs that exceeds the flowing temperature of the metal such that the mixture is further compacted and densified. The temperature spike and duration thereof remains below that at which significant reaction between metal and ceramic occurs. The method requires pressure of 60-250 kpsi employed at a rate of 5-250 kpsi/second.
摘要翻译： 由化学不相容性和非润湿性特征的组分制备基本致密的无空隙陶瓷 - 金属复合材料。 复合材料具有类似于起始化学和微观结构的最终化学特征，其特征在于与起始粉末大小相似的陶瓷颗粒和金属相的存在。 制备复合材料的方法需要形成均匀的陶瓷 - 金属混合物，将混合物加热到接近但低于金属开始流动的温度的温度，并在混合物的压实和致密化的压力下压制混合物 发生并且发生超过金属流动温度的感应温度尖峰，使得混合物进一步压实和致密化。 温度峰值和持续时间仍然低于金属和陶瓷发生显着反应的温度峰值和持续时间。 该方法需要60-250 kpsi的压力，速率为5-250 kpsi / s。
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公开(公告)号：US5143540A
公开(公告)日：1992-09-01
申请号：US584548
申请日：1990-09-18
CPC分类号： B22F3/156 , B22F3/15 , C22C1/051 , B22F2998/00
摘要： Substantially dense, void-free ceramic-metal composites are prepared from components characterized by chemical incompatibility and non-wetting behavior. The composites have a final chemistry similar to the starting chemistry and microstructures characterized by ceamic grains similar in size to the starting powder and the presence of metal phase. A method for producing the composites requires forming a homogeneous mixture of ceramic-metal, heating the mixture to a temperature that approximates but is below the temperature at which the metal begins to flow and pressing the mixture at such pressure that compaction and densification of the mixture occurs and an induced temperature spike occurs that exceeds the flowing temperature of the metal such that the mixture is further compacted and densified. The temperature spike and duration thereof remains below that at which significant reaction between metal and ceramic occurs. The method requires pressures of 60-250 kpsi employed at a rate of 5-250 kpsi/second.
摘要翻译： 由化学不相容性和非润湿性特征的组分制备基本致密的无空隙陶瓷 - 金属复合材料。 复合材料具有类似于起始化学和微观结构的最终化学特征，其特征在于尺寸与起始粉末相似的晶粒和金属相的存在。 制备复合材料的方法需要形成均匀的陶瓷 - 金属混合物，将混合物加热到接近但低于金属开始流动的温度的温度，并在混合物的压实和致密化的压力下压制混合物 发生并且发生超过金属流动温度的感应温度尖峰，使得混合物进一步压实和致密化。 温度峰值和持续时间仍然低于金属和陶瓷发生显着反应的温度峰值和持续时间。 该方法需要60-250kpsi的压力，速率为5-250kpsi /秒。
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