铝合金内表面电爆炸喷涂不同比例钼-高碳钢的性能对比研究

Contrast Research on Characteristics of Mo and High-carbon Steel with Different Ratio by Wire Explosion Spraying on Inner Face of Al Alloy

为了提高铝合金工件内表面的耐磨损能力,采用电爆炸喷涂技术在LY12基体上进行了制备钼和80号高碳钢复合涂层的实验研究。通过钼/高碳钢交替喷涂制备了钼和高碳钢的喷涂次数比分别为1∶1和1∶2的复合涂层,并对涂层进行了检测。结果表明,电爆炸喷涂的复合涂层形成了良好的冶金结合,涂层具有硬度高、抗磨损、粗糙度小、结合强度好的优点,层数比为1∶2时涂层的性能更加优越。

In order to enhance wear-resistant ability of inner surface of aluminum alloy work piece, molybdenurn and high-carbon steel （0. 8℃） composite coating is prepared on LY12 substrate by wire explosion spraying method. The composite coatings are sprayed according to the layer ratio of molybdenum and high-carbon steel is 1 ： 1 and 1 ： 2. These coatings＇ characteristics are analyzed. It shows that metallurgy junction is formed well between layers in coatings. Hardness, anti attrition merit, bonding strength and surface roughness of the coating are good. The characteristics of coating with layer ratio of 1 ： 2 is superior to that of 1 ： 1.