采用电极移动液流式阴极等离子电解在304不锈钢基体上沉积Ni-P和Ni-P-ZrO2纳米晶涂层.结果表明,提高溶液中ZrO2纳米颗粒的浓度可以降低起弧电压,对Ni-P-ZrO2涂层的成分、结构和性能有着显著的影响.SEM形貌观察表明,阴极等离子电解沉积的Ni-P和Ni-P-ZrO2涂层具有熔融后快速凝固的特征,涂层与基体具有冶金结合.根据XRD的衍射峰宽的计算结果证明这些涂层具有纳米晶粒结构.元素分析结果证明,提高溶液中ZrO2纳米颗粒的浓度,可以提高镀层中弥散ZrO2颗粒的含量,但会降低P的含量.硬度和磨损实验结果表明,Ni-P涂层中弥散纳米ZrO2后,可显著提高涂层的显微硬度和耐磨性能.
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