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1. 发明授权

US5853477A Manufacture of transition metal carbide, nitride and carbonitride whiskers 失效
标题翻译：过渡金属碳化物，氮化物和碳氮化物晶须的制造
公开(公告)号：US5853477A
公开(公告)日：1998-12-29
申请号：US772099
申请日：1996-12-20
申请人： R. Tom Coyle , Magnus Ekelund , Mats Nygren , Mats Johnsson
发明人： R. Tom Coyle , Magnus Ekelund , Mats Nygren , Mats Johnsson
IPC分类号： C30B29/62 , C30B25/00
CPC分类号： C30B25/005 , C30B29/36 , C30B29/38 , Y10S977/734 , Y10S977/762 , Y10S977/776 , Y10S977/90
摘要： There is disclosed a method of producing, in large volumes and at low cost, Ta, Nb, Zr and Hf carbide, nitride or carbonitride whiskers, preferably submicron, having excellent reinforcing properties, suitable as reinforcement in a wide range of materials, including metals, intermetallics, plastics, ceramics and metallic bonded hard material. Oxides of Ta, Nb, Zr and Hf or alkali compounds thereof in an amount to satisfy the stoichiometric requirements of the desired carbide or nitride are mixed with the carbon source along with an alkali and/or alkali earth metal halogenide as a volatilization agent for the metal and a catalyst for the whisker growth such as Ni and/or Co. The reactant powders are blended in some typical manner using a high speed blender so as to intimately mix them. Finally, the starting material is subjected to nitriding, carbonizing or carbonitriding heat treatments in order to produce the desired whiskers.
摘要翻译：公开了大量且低成本地生产具有优异的增强性能的Ta，Nb，Zr和Hf碳化物，氮化物或碳氮化物晶须，优选亚微米级的方法，适用于在宽范围的材料（包括金属）中的增强，金属间化合物，塑料，陶瓷和金属粘结硬质材料。将满足所需碳化物或氮化物的化学计量要求的量的Ta，Nb，Zr和Hf的氧化物或其碱金属化合物与作为挥发剂的碱和/或碱土金属卤化物一起与碳源一起混合金属和用于晶须生长的催化剂如Ni和/或Co.使用高速混合器以一些典型的方式将反应物粉末混合，以便将它们紧密混合。最后，对原料进行氮化，碳化或碳氮共渗处理，以产生所需的晶须。

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