摘要
用月桂酸对纳米3Y—TZP粉体进行表面改性，实验结果表明，改性最佳工艺为：月硅酸用量10％、改性时间75min、改性温度60％。经表面改性的粉体，由引起团聚的强极性多羟基表面结构变为非极性有机表层结构，粉体间作用力减小，硬团聚消失，大幅度提高了陶瓷体的烧结性能。
Tetragonal zirconia polycrystals （TZP） stabilized with 3% （molar fraction） Y2O3 （3Y-TZP） name-powders were modified with lauric acid. Effects of organic modification on properties of 3Y-TZP powders and sintering were investigated. Results show that the optimum processes for surface modification of 3Y-TZP nano-powders are modifier content 10%, modification time 75 rain, and modification temperature 60℃. The surface structure changes from polar hydroxylie surface structure causing agglomeration of powders into non-polar organic layer surface structure. The c, hanges in surface polarity can reduce the interaction between particles, eliminate of hard agglomeration of powders and improve the sintering property of ceramic.
基金
中北大学青年科学基金项目
