纳米3Y—TZP粉体的表面改性研究  

Study on Surface Modification of 3Y-TZP Nano-powders

作　　者：杨晓敏[1] 

机构地区：[1]中北大学材料科学与工程学院,山西太原030051

出　　处：《纳米科技》2009年第5期72-75,共4页

基　　金：中北大学青年科学基金项目

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.

关 键 词：纳米3Y-FZP 表面改性 亲油化度 烧结 

分 类 号：TQ174.75[化学工程—陶瓷工业]