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OALib Journal期刊
ISSN: 2333-9721
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不锈钢表面阴极微弧电沉积氧化铝膜层的性能
Keywords: 无机非金属材料,阴极微弧电沉积,不锈钢,氧化铝膜层,性能
Abstract:
？以0.4mol/lal(no3)3乙醇溶液为电解液,用阴极微弧电沉积方法在304不锈钢表面制备了80？μm厚的氧化铝膜层。分析了膜层的形貌、成分和相组成,测试了膜层的抗高温氧化和电化学腐蚀性能。结果表明,电沉积膜层由γ--al2o3和α--al2o3组成。膜层中含有少量的fe、cr、ni元素,表明膜/基界面附近的不锈钢基体在微弧放电作用下也参与氧化铝膜层的沉积和烧结过程。氧化铝膜层使不锈钢在800℃恒温氧化速率明显降低,表明其抗高温氧化性能得到提高。同时,其腐蚀电位正向移动,腐蚀电流密度降低1个数量级,表明其耐腐蚀性能得到提高。
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