测量镀铬层界面韧性的激光屈曲法  

Laser buckling method to measure interfacial toughness of chromium-plating coating

作　　者：张国祥[1] 张坤[1] 罗耕星[1] 陈光南[1] 李怀学[1] 

机构地区：[1]中国科学院力学研究所

出　　处：《吉林大学学报（工学版）》2008年第1期57-60,共4页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(50471087,50531060)

摘　　要：为了测量强界面电镀铬层的界面韧性,利用连续CO2激光器对钢基体上的电镀铬层表面进行循环扫描实验。结果表明:该种加热方式能够诱发铬层沿激光扫描方向呈周期性分布的屈曲变形。在此基础上,结合涂层屈曲变形理论,提出测量镀铬层界面韧性的激光屈曲法。该方法只需对一个屈曲单元的最大屈曲高度和屈曲半长进行测量,就可给出界面韧性。作为应用举例,利用该方法对上述镀铬层/钢基体结构界面韧性进行了测量。To measure the interracial toughness of strong Cr-plating coating on substrate, experiment of laser periodical scanning into the surface of Cr-plating coating on steel substrate is carried out using CO2 continuous laser. It is observed that this mode of heating can induce chromium coating to periodically buckle along the laser scanning direction. Based on this observation, incorporating the theory of coating buckling deformation, the laser buckling method is presented. This method can be used to measure the interracial toughness of Cr-plating coating with the help of just one buckling unit. As a case study, the interracial toughness of the chromium coating on steel substrate is measured by this method.

关 键 词：材料的表面与界面 实验力学 界面韧性 镀铬层 激光屈服法 连续CO2激光器 

分 类 号：TG174.441[金属学及工艺—金属表面处理]