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原位测量法研究AZ31镁合金表面化学镀Ni-P的沉积机理
引用本文:秦铁男,马立群,姚妍,倪聪,赵相玉,丁毅.原位测量法研究AZ31镁合金表面化学镀Ni-P的沉积机理[J].中国有色金属学会会刊,2011(12):2790-2797.
作者姓名:秦铁男  马立群  姚妍  倪聪  赵相玉  丁毅
作者单位:南京工业大学材料科学与工程学院;
基金项目:Project supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), China
摘    要:设计一种原位方法去测量AZ31镁合金在化学镀Ni-P过程中基体在镀液中的开路电位和体积表面的镀层形貌变化。通过开路电位曲线、扫描电子显微镜和能谱分析研究AZ31镁合金化学镀Ni-P的沉积机理。结果表明:化学镀Ni-P的沉积过程包括镀层的形成过程和镀层的增厚过程,其中镀层的形成过程又包括镍晶核的形核和长大过程、镀层的二维扩展过程和镀层的三维搭接过程。扫描电镜分析证实了Ni-P镀层的球形瘤状物不仅形成于镀层的增厚阶段,同样也形成于Ni-P镀层的初始沉积阶段。不同沉积阶段的沉积速度变化分别与各自的沉积机理对应。

关 键 词:镁合金  化学镀Ni-P  形核  沉积速度

An in situ measure method to study deposition mechanism of electroless Ni-P plating on AZ31 magnesium alloy
QIN Tie-nan,MA Li-qun,YAO Yan,NI Cong,ZHAO Xiang-yu,DING Yi College of Materials Science , Engineering,Nanjing University of Technology,Nanjing ,China.An in situ measure method to study deposition mechanism of electroless Ni-P plating on AZ31 magnesium alloy[J].Transactions of Nonferrous Metals Society of China,2011(12):2790-2797.
Authors:QIN Tie-nan  MA Li-qun  YAO Yan  NI Cong  ZHAO Xiang-yu  DING Yi College of Materials Science  Engineering  Nanjing University of Technology  Nanjing  China
Affiliation:QIN Tie-nan,MA Li-qun,YAO Yan,NI Cong,ZHAO Xiang-yu,DING Yi College of Materials Science and Engineering,Nanjing University of Technology,Nanjing 210009,China
Abstract:An in situ method was designed to measure a continuous open circuit potential (OCP) curve of AZ31 magnesium alloy and to observe the morphology variation of Ni-P coating during the process of the electroless plating. The deposition mechanism of the electroless Ni-P plating on AZ31 Mg alloy was studied by OCP curve, scanning electron microscopy (SEM), and energy dispersion spectroscopy (EDS). The process of electroless Ni-P plating contains the coating formation stage and the coating growth stage. The format...
Keywords:magnesium alloy  electroless Ni-P deposition  nucleation  coating rate  
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