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2mm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C2H2需要过量，O2/C2H2（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 O2/C2H2 mol ratio must be 1.5 in order to avoid the oxidation of Co during spraying and obtain good microstructure.
参考文献
| [1] | HB7627-1998.HB7627-1998.爆炸喷涂碳化钨、碳化铬耐磨涂层质量检验[S]. |
| [2] | 唐建新;张爱斌 等.测量涂层结合强度的方法和用于测量的试样[P].CN:00107205.6 |
| [3] | 唐建新,张爱斌,陈建平,米青田.爆炸喷涂工艺原理分析[J].材料保护,2000(09):33-34,57. |
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