中文摘要：

制备高性能纳米复合陶瓷材料需要先制备分散均匀的纳米粉体。本文主要以无水乙醇为分散介质,以PEG为分散剂,采用空间位阻稳定机制,分别研究了纳米TiC0.7N0.3粉体的单相分散性和Al2O3/TiC0.7N0.3及ZrO2/TiC0.7N0.3的两相分散性,并着重分析了它们的分散机理。通过优化两相粉体的组分和PEG添加量获得了良好的两相分散效果;利用PEG的空间位阻稳定机制可获得分散性好、高稳定的ZrO2/TiC0.7N0.3的无水乙醇悬浮液。

英文摘要：

Preparation of homogeneously dispersed nanometer powder suspensions is the first problem to be solved in the fabrication of high performance nano composite ceramic materials. In the present study, the dispersibility of TiC0.7N0.3n,Al2O3n/TiC0.7N0.3n and ZrO2n/TiC0.7N0.3n were researched by means of steric stabilization with PEG dispersant and absolute ethyl alcohol dispersive medium, and the disperse theory was analyzed. Through optimizing the component of Al2O3n/TiC0.7N0.3n and ZrO2n/TiC0.7N0.3n and adjusting the amount of PEG, highly dispersed and stable TiC0.7N0.3n,Al2O3n/TiC0.7N0.3n and ZrO2n/TiC0.7N0.3n absolute ethyl alcohol suspensions under the best dispersion conditions were finally achieved.