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Corrosion behavior of ZrN gradient and Zr/ZrN multilayer coatings deposited by cathodic arc ion plating
Pages: 37-39
Year: Issue:  6
Journal: Electroplating & Finishing

Keyword:  不锈钢氮化锆阴极电弧离子镀腐蚀机理极化曲线中性盐雾试验;
Abstract: 采用阴极电弧离子镀技术在1Cr13不锈钢表面制备了ZrN梯度层和Zr/ZrN多层膜,并用电化学腐蚀方法和中性盐雾法检测了1Cr13基体、ZrN梯度层和Zr/ZrN多层膜的耐腐蚀性能.结果表明:Zr/ZrN多层膜和ZrN梯度层均能提高1Cr13基体的抗腐蚀能力,而Zr/ZrN多层膜的效果更明显:镀层的内部缺陷(如微孔)和液滴导致薄膜发生孔蚀、隙缝腐蚀和电偶腐蚀;镀层保护的实质是物理屏障作用,细化晶粒、减少膜层中的液滴及针孔等缺陷能显著提高薄膜的抗腐蚀性能.
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