为解决传统磷化工艺工序多、操作控制难、易产生磷化沉渣等问题，以苯基膦酸为原位磷化剂，以醇酸调和漆为有机涂料，采用一道工序在6061铝合金表面形成原位磷化有机涂层，并利用电化学测试方法对其防护性能进行了评价，同时将其与不加苯基膦酸的有机涂层和经过磷酸盐、铬酸盐处理后的有机涂层进行对比。研究了苯基膦酸含量、固化温度、固化时间对原位磷化有机涂层耐蚀性的影响。结果显示：有机涂料中加入苯基膦酸可明显提高有机涂层的耐腐蚀性能，当苯基膦酸含量为2％（质量分数），固化温度为50℃，固化时间为8h时，有机涂层的耐腐蚀性能最佳，并且优于磷酸盐和铬酸盐处理后的有机涂层。
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