用光敏感化合物在紫外可见光照射下能发出荧光的特性,筛选了3种光敏感材料,分别将它们添加在环氧漆中制备光敏智能涂层中,并涂覆在含钪铝合金的表面,对铝合金的早期腐蚀进行监测预警.用荧光光谱研究了光敏材料的荧光特性.通过全浸腐蚀试验和盐雾试验研究传感涂层中光敏物质的荧光特性变化与铝合金腐蚀的对应关系,光学显微及扫描电子显微分析表明荧光特征点处即为铝合金基体腐蚀过程中发生阳极过程的区域.探讨了传感涂层对腐蚀监测的灵敏度,并对光敏智能涂层监测铝合金腐蚀的工作机理进行了分析.结果表明,所选的3种光敏材料均能有效地监测到铝合金基体的腐蚀位置及腐蚀发展过程.
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