陶瓷粉体的表面性质和在水中的胶体行为对成型、烧结等工艺过程有很大影响.本文回顾了近年来对氮化硅粉体的表面化学性质和在水中的胶体特性的研究成果.系统介绍了氮化硅粉体表面元素的键合状态、表面官能团、氧在颗粒表面和内部的分布和表面富氧层的厚度等表面化学性质,以及氮化硅颗粒在水中的荷电机理、等电点和Zeta电位与表面氧含量的关系、含烧结助剂氮化硅多相体系的胶体特性和分散剂的作用机理等胶体特性.
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