巴志新,戴玉明,张振忠,周建秋,张少明

• 1:南京工业大学材料科学与工程学院
• 2:南京工程学院材料工程学院

摘要(Abstract)：

采用脉冲电沉积法制备纳米晶镍镀层,利用扫描电镜、透射电镜及XRD对不同糖精钠浓度下制得的镍镀层的微观结构进行了表征,采用显微硬度计、DSC及全电位测试仪对镀层的硬度、热稳定性和耐蚀性进行研究。结果表明:镍镀层晶粒尺寸随着糖精钠浓度升高先增后降,浓度为10g/L时晶粒尺寸最小;当浓度低于15g/L时,镀层表面较为光滑、明亮;镍镀层的显微硬度在糖精钠浓度为10g/L时达到最大值,显微硬度与平均晶粒尺寸的关系基本符合Hall-Petch方程;镍层晶粒的失稳长大温度随糖精钠浓度的增加在305℃上下波动;当糖精钠浓度为10g/L时,镍层的耐蚀性最好。

关键词(KeyWords)： 纳米晶镍;组织结构;性能;脉冲电沉积;糖精钠

Abstract:

Keywords:

基金项目(Foundation): supported by the National Science Foundation of China(No.10502025);; the Jiangsu Universities Natural Science Foundation(No.05KJB1300421)

作者(Author): 巴志新,戴玉明,张振忠,周建秋,张少明

DOI: 10.13289/j.issn.1009-6264.2010.09.003

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