爆炸喷涂WC-Co涂层结合强度的测量方法及喷涂工艺研究  

Method of Adhesion Strength and Spray Techniques of Detonation Gun Sprayed WC-Co Coatings

作　　者：唐建新[1] 米青田[1] 张爱斌[1] 陈建平[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《材料工程》2001年第4期34-36,共3页Journal of Materials Engineering

摘　　要：设计了一种新的测量方法用于测量爆炸喷涂涂层与基体的结合强度。从理论上分析了这种方法拉伸面的临界尺寸。实验结果表明 ,对国产喷枪尺寸设计为 2 mm左右是合适的 ,爆炸喷涂涂层与基体的结合强度最高可达 143MPa。为避免喷涂过程中金属 Co的损失 ,获得较好的显微形貌 ,爆炸气体中 C2 H2 需要过量 ,O2 / C2 H2 (摩尔比 )为 1.5左右较合适。A new method has been introduced to measure the adhesion strength of the d gun sprayed WC Co coatings The pulling critical size has been analyzed The experiments show that the pulling critical size is about 2mm for detonation spraying gun made in China and the adhesion strength for WC Co coating is as high as 143MPa It has indicated that the value of O 2/C 2H 2 mol ratio must be 1 5 in order to avoid the oxidation of Co during spraying and obtain good microstructure

关 键 词：爆炸喷涂 喷涂工艺 结合强度 金属材料 碳化钨-钴涂层 测量方法 

分 类 号：TG174.442[金属学及工艺—金属表面处理]