等离子喷涂热障涂层厚度测量方法研究  

Study on Thickness of Thermal Barrier Coating Deposited by Plasma Spraying

作　　者：倪立勇[1] 杨震晓[1] 马康智 文波[1] 杨玉茹[1] 杨杰[1] 吴朝军[1] 

机构地区：[1]航天材料及工艺研究所,北京100076

出　　处：《热喷涂技术》2015年第4期22-25,30,共5页Thermal Spray Technology

摘　　要：涂层厚度是热障涂层主要性能指标之一。本文采用大气等离子喷涂技术制备了热障涂层,利用测厚仪和外径千分尺分别测量了NiCrAlY粘结层、ZrO_2面层以及涂层总厚度。实验结果表明:对于钢基体来说,测厚仪测量粘结层与面层厚度均较为准确,可以实际反映出涂层的真实厚度。对于铝合金和钛合金基体,测厚仪测量粘结层厚度与实际厚度偏差较大,应尽量采用机械法;测厚仪测量面层厚度时采用粘结层进行调零,结果与涂层实际厚度基本一致。以上结果对热障涂层的实际工程应用具有一定的指导意义。The thickness is one of the most important performance of thermal barrier coating.The thickness of NiCrAlY bond coat and ZrO_2 top coat were measured by thickness gauge and outside micrometer.The results showed that the thickness of NiCrAlY coat and ZrO_2 coat measured by thickness gauge was precious for steel substrate.For aluminum and titanium substrate,it was suitable for NiCrAlY coat by outside micrometer while ZrO_2 coat by thickness gauge adjusted zero calibration based on NiCrAlY coat.The conclusion had guiding significance for engineering application of thermal barrier coating.

关 键 词：热障涂层 厚度 磁性法 涡流法 

分 类 号：TG174.4[金属学及工艺—金属表面处理]