电镀Zn-Ni和化学镀Ni-P交替镀层的抗腐蚀性能

材料保护, 2003, 36(11): 12-23. doi: 10.3969/j.issn.1001-1560.2003.11.005

电镀Zn-Ni和化学镀Ni-P交替镀层的抗腐蚀性能

杨振炜 ^1, , 聂书红 ^2, , 刘佑铭 ^3, , 蔡珣 ^4, , 陈秋龙 ^5,

1.上海交通大学材料学院教育部高温材料和高温测试重点实验室,上海,200030

2.上海交通大学材料学院教育部高温材料和高温测试重点实验室,上海,200030

3.上海交通大学材料学院教育部高温材料和高温测试重点实验室,上海,200030

4.上海交通大学材料学院教育部高温材料和高温测试重点实验室,上海,200030

5.上海交通大学材料学院教育部高温材料和高温测试重点实验室,上海,200030

关键词：电镀Zn-Ni , 化学镀Ni-P , 交替镀层 , 耐腐蚀性能

Corrosion Resistance of Alternate Coatings of Zn-Ni Electroplating and Electroless Ni-P Plating

为了提高铸钢基体的耐腐蚀、耐磨性能,通过在铸钢基体上沉积化学镀Ni-P和电镀Zn-Ni的交替镀层的方法获得了一系列多层镀层.考察了多层镀层的外观和在5%NaCl中的抗腐蚀性能.研究表明,化学镀Ni-P在电镀Zn-Ni层上的沉积以及在铸钢基体上沉积Zn-Ni与Ni-P的交替镀层是可行的;所有交替镀层的耐腐蚀性优于相同厚度的Ni-P化学镀层;亚层厚度为1 μm和2 μm的交替镀层比相同厚度的Zn-Ni单层镀层的耐腐蚀性更为可靠;镀层厚度相同且Ni-P亚层的厚度超过0.5 μm时,交替镀层的耐腐蚀性随着层数和Zn-Ni亚层厚度的增加而增加,这主要是多层效应的结果;在长达1 a的浸泡腐蚀试验期间,所有镀层的外观都是令人满意的,都没有出现鼓泡和剥裂现象.

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