纳米氧化锆涂层的显微硬度分布特征研究  

Study of Microhardnesses Distribution Characteristic of Nanostructured Zirconia Coatings

作　　者：常鹰[1] 杜宽河[1] 朱勤标[1] 李溪滨[2] 董仕节[3] 

机构地区：[1]湖北工业大学化学与环境工程学院,武汉430068 [2]中南大学粉末冶金国家重点实验室,长沙410083 [3]湖北工业大学机械学院,武汉430068

出　　处：《材料导报》2012年第6期89-91,109,共4页Materials Reports

基　　金：国家自然科学基金(50575069)

摘　　要：采用相同的喷涂工艺参数分别对两种喷雾造粒纳米氧化锆粉末进行等离子喷涂,制备了两种纳米涂层S1和B1,对比研究了两种涂层的显微硬度、抗裂纹扩展力。结果表明,两种涂层的显微硬度测试值服从Weibull分布,无论是表面还是截面的显微硬度值,S1涂层均优于B1涂层,两种涂层截面的显微硬度值均优于其对应的表面显微硬度值,S1涂层的抗裂纹扩展力也优于B1涂层。Adopting the same technical parameters, 81 coating and B1 coating were prepared By plasma spra- ying with two kinds of reconstituting and drying powders. Microhardness and resist crack spread force of as-spraying coatings were studied contrastively, and results indicate that of S1 coating and B1 coating go with Weibull, microhard- ness and resist crack spread force of S1 coating excel those of B1 coating. Cross-section rnierohardnesses of two coa-tings excel their surface microhardnesses.

关 键 词：纳米氧化锆涂层等离子喷涂显微硬度 

分 类 号：TG156.99[金属学及工艺—热处理]