| 镁合金化学镀镍层的结合机理 |
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| 引用本文： | 刘新宽,向阳辉,胡文彬,丁文江.镁合金化学镀镍层的结合机理[J].中国腐蚀与防护学报,2002,22(4):233-236. |
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| 作者姓名： | 刘新宽 向阳辉 胡文彬 丁文江 |
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| 作者单位： | 上海交通大学材料科学与工程学院,上海,200030 |
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| 基金项目： | 自然基金资助项目 ( 5 0 10 10 0 7) |
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| 摘 要： | 镁合金在直接化学镀前的活化处理时，表面生成一层氟化物保护膜，溶解度计算及XPS分析表明，氟化物膜在镀液中可稳定存在，用SEM，XPS，SAM考察了初始沉积Ni，镀层横截面以及开裂后的断面形貌与成分，发现在镀层与基体之间存在着氟化物，镀液成分与Ni的混杂层，这一混杂层是镀层与基体结合的最薄弱环节，镀层开裂通常首先发生在此混杂层内。
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| 关 键 词： | 镀镍 镁合金 化学镀 结合机制 氟化物 |
| 文章编号： | 1005-4537(2002)04-0233-04 |
ADHESION MECHANISM OF DIRECT ELECTROLESS NICKEL COATING ON MAGNESIUM ALLOYS |
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| LIU Xinkuan,XIANG Yanghui,HU Wenbin,DING Wenjiang.ADHESION MECHANISM OF DIRECT ELECTROLESS NICKEL COATING ON MAGNESIUM ALLOYS[J].Journal of Chinese Society For Corrosion and Protection,2002,22(4):233-236. |
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| Authors: | LIU Xinkuan XIANG Yanghui HU Wenbin DING Wenjiang |
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| Abstract: | The theoretical calculation and XPS analysis show that the fluoride layer formed during activation in hydrogen fluoride acid dissolves little in electroless plating bath.The adhesive characteristics of nickel coating with the magnesium alloys matrix were studied by means of the analysis of the initially deposited nickel and the cross section of the coating as well as the fracture surface by using TEM,XPS,SAM.It is shown that there exists a mixture compound layer above the matrix surface between the magnesium and the nickel coating,which consists of fluoride,nickel and the composition of plating bath.Fracture usually occurs in the mixture layer which is the weakest link for the adhesion of nickel coating on the magnesium alloys. |
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| Keywords: | magnesium alloy direct electroless nickel plating adhesion mechanism fluoride |
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