检测耐腐蚀涂层在腐蚀环境下的完整性,对预测涂层工作寿命至关重要.通过电化学沉积法成功地将三基色无机荧光颗粒:BaMgAl11O17∶ Eu2+(蓝粉),Y2O3∶ Eu3+(红粉),CeMgAl11O19∶ Tb3+(绿粉)与金属镍复合,在瓦特光亮镀镍浴中沉积出具有三基色指示功能的镍基自敏复合涂层.采用X射线衍射(XRD)、扫描电镜(SEM)、表面轮廓仪、维氏硬度计、荧光发射光谱和电化学测试手段分别对涂层组织形貌结构、润湿性、沉积率、硬度、发光性能及自敏性能进行了检测,结果表明,阳离子表面活性剂十六烷基三甲基溴化铵(CTAB)和非离子表面活性剂聚乙二醇(PEG)可以有效提高三基色荧光粒子沉积率.三种荧光粒子与金属镍之间表现出不同的润湿性和匹配性,使得其在镍基复合涂层中具有不同的作用:Y2O3∶ Eu3+荧光粒子改变了涂层结晶取向,且使晶粒细化,BaMgAl11O17∶ Eu2+使涂层组织呈现节瘤状,Y2O3∶ Eu3+和CeMgAl11O19∶ Tb3+粒子明显提高了涂层硬度.三基色荧光粒子在腐蚀前后表现出不同的发光特性,可以有效指示出涂层工作周期内的完整性,起到良好的自敏检测作用.
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