溶胶-凝胶工艺制备ZrO_2涂层对工程陶瓷表面改性的研究  

STUDY OF MODIFICATION OF ENGINEERING CERAMICS WITH ZrO_2 COATING PREPARED BY SOL-GEL PROCESS

作　　者：张勤俭[1] 张建华[2] 李敏[3] 张勤河[2] 毕进子[2] 

机构地区：[1]北京市电加工研究所,北京100083 [2]山东大学机械工程学院,济南250061 [3]国家电力公司电力建设研究所,北京100055

出　　处：《中国陶瓷》2002年第1期30-32,共3页China Ceramics

基　　金：教育部优秀青年教师基金项目 (科教司〔2 0 0 0〕65)

摘　　要：采用无机盐先驱体 ,溶胶 -凝胶工艺在氧化铝基工程陶瓷上成功制备了ZrO2 涂层。用差热分析(DTA)、扫描电子显微镜 (SEM)、X射线衍射 (XRD)等分析手段对ZrO2 涂层的物相组成、表面和断面形貌进行了表征。对精磨、热处理、ZrO2 涂层试样的抗弯强度和Weibull模数进行了比较。结果表明 :ZrO2 涂层可以明显改善陶瓷的表面质量 ;涂层与基体结合紧密 ,无明显的界面层 ;涂层试样的抗弯强度和Weibull模数均比未涂层试样有明显的提高。ZrO 2 coating was prepared on alumina engineering ceramics.The composition,surface and cross-section apppearances were characterized by DTA,SEM and XRD.The bending strength and the Weibull modulus of the samples after finishing grinding,heat treatment and coating with ZrO 2 film were compared.The results showed that the ZrO 2 coating improved the surface quality evidently.The cohesion of the coating and substrate was compact without distinct imterface.The coated samples had the bigger bending strength and the Weibull modulus.

关 键 词：溶胶-凝胶工艺 抗弯强度 Weibull模数 二氧化锆涂层 工程陶瓷 表面改性 

分 类 号：TQ174.758[化学工程—陶瓷工业]