为提高TC4钛合金基体与漆层结合力,研究了不同的前处理方式对钛合金漆层的结合力的影响,寻找到提升钛合金零件漆层结合力的最优办法:在钝化前增加吹砂工序;钝化后涂覆AC-131CB溶胶凝胶;钝化后使用SP1050表面改性剂.解决了钛合金零件钝化后漆层结合力差,影响产品外观和质量的问题,提升了飞机整体腐蚀防护性能.

In order to improve the adhesion between titanium alloy TC4 substrate and coating,the effect of different pretreatment methods on the bonding strength of titanium alloy paint layer was researched,found the best way to improve the painting adhesion of titanium alloy parts:adding sand blowing process before passivation;apply AC-131CB sol-gel after passivation;surface modifiers SP1050 are used after passivation.The problem of poor adhesion of paint layer after passivation of titanium alloy parts,which affects the appearance and quality of products,has been solved,and the overall corrosion protection performance of aircraft has been improved.