一种弱界面结合涂层面内抗拉强度测试方法  

MEASUREMENT METHOD OF IN-PLANE TENSILE STRENGTH FOR WEAK-INTERFACE BONDING COA TINGS

作　　者：弓满锋[1] 隋广洲[1] 

机构地区：[1]湛江师范学院机电工程研究所,湛江524048

出　　处：《机械强度》2012年第3期338-341,共4页Journal of Mechanical Strength

基　　金：国家自然科学基金(50772089);湛江师范学院自然科学博士启动项目(ZL0903);湛江市财政资金科技专项竞争性分配项目(2011D01;2011A0201)资助~~

摘　　要：基于界面自由和均匀应变理论模型,推导出形式较为简单的弱界面结合涂层—基体系统应力和应变计算公式;通过实验进一步验证上述计算公式,公式可用于测试弱界面结合的涂层和基体系统的面内抗拉强度。结果证实:测试方法简单有效,实验测得60μm～250μm厚6%Y2O3-ZrO2涂层的面内抗拉强度值分布在323.5 MPa～376.2 MPa之间,且随着涂层厚度增加,涂层面内抗拉强度值小幅下降。The simple stress and strain computational formulas were deduced for weak-interface bonding coatings, based on the interface freedom and uniformity strain theory model. The stress and strain computational formulas were measured, which were devoted to work out the in-plane tensile strength of weak-interface bonding coatings. These results indicated that the testing method was simple and effective, the in-plane tensile strength of 6% Y203-ZrO2 coatings was about 323.5 MPa to 376.2 MPa when the coatings thickness were changed from 60 μm to 250 μm, and the in-plane tensile strength was decreased with increasing coatings thickness.

关 键 词：弱界面 涂层 面内抗拉强度 

分 类 号：TB333[一般工业技术—材料科学与工程] TG146[金属学及工艺—金属材料]