变形对镍镀层纳米压痕尺寸效应的影响及预测  

Influence of Deformation on Nanoindentation Size Effect in Nickel Coating

作　　者：马增胜[1] 龙士国[1] 韩海生[2] 潘勇[1] 周益春[1] 

机构地区：[1]湘潭大学低维材料及其应用技术教育部重点实验室 [2]湘潭大学佳木斯大学理学院,黑龙江佳木斯154007

出　　处：《机械工程材料》2008年第8期20-22,49,共4页Materials For Mechanical Engineering

基　　金：教育部霍英东教育基金会高等院校青年教师优选资助项目(104014);湖南省教育厅高校青年科研基金资助项目(05B008)

摘　　要：为了研究拉伸变形对电沉积镍镀层硬度尺寸效应的影响,用纳米压痕仪对变形前后的镍镀层进行了测试,并通过两种模型对其进行了预测。结果表明:对于镀态和经过10%拉伸变形的镍镀层,压痕硬度随着压痕深度的降低而增加;试验结果能够很好地通过GCV模型来拟合,而Nix-Gao模型只有在压痕深度>100 nm时才能和试验结果相吻合;纳米压痕硬度尺寸效应对于经过拉伸变形10%的试样更加明显。To investigate the influence of tensile deformation on the nanoindentation size effect in electrodeposited nickel coating,experiments were conduct by nanoindenter and the results were predicted by two models.Both in as-deposited state and with a tensile strain of 10% nickel coating,the indentation hardness increased as the indentation dimension decreased.The experimental results can be accurately described by GCV model.However the Nix-Gao model can fit the experimental results only when the indentation dept...

关 键 词：电沉积镍镀层 纳米压痕 尺寸效应 硬度 

分 类 号：TG174.44[金属学及工艺—金属表面处理]