摘要
利用微弧氧化技术对ZL108铝合金活塞第一道环槽进行了陶瓷化处理。研究了电流密度、氧化时间等工艺参数对微弧氧化层厚度的影响规律;研究了电解液旋流循环搅拌对深槽内表面氧化层均匀性的改善作用;与未经微弧氧化处理的ZL108铝合金进行了耐磨性对比试验,并给出了装车运行考核结果。研究结果表明,用微弧氧化技术可以使窄而深的环槽内表面形成均匀的厚度达40μm、耐磨性良好的氧化铝陶瓷涂层,使活塞环槽耐磨损寿命显著提高。
The ceramic treatment for the first ring groove of ZL108aluminum alloy piston was conducted with micro-arc oxidation technique.The effect of current density and oxidation time on the thick of micro-arc oxidation layer was studied.The uniformity of oxidation layer in the inner surface of the deep groove was improved with swirl electrolytic solution.The comparison experiments of wear resistance with ZL108aluminium alloy which is not treated by micro-are oxidation were made and the results of vehicle testings were given.It showed that Al2O3ceramic coating which had40μm thick and good wear resistance was formed on the inner surface in the deep and narrow piston ring groove.Service life of piston ring groove had been improved.
出处
《汽车工艺与材料》
2002年第12期7-9,共3页
Automobile Technology & Material
基金
机械工业技术发展基金资助项目(95JA0507)。
