Microstructure and Properties of Surface Nanostructured Copper

摘要：

Surface nanocrystallization (SNC) is a novel method for improving materials properties. Nanostructured surface layers of about 20 μm thickness were produced in copper plate samples by means of surface mechanical attrition treatment (SMAT). The behaviors of the SMAT samples were investigated by using transmission electron microscopy (TEM), Vickers hardness testing and potentiodynamic anodic polarization tests. The experimental results showed that the longer the peening time was performed on the copper pate samples, the thicker the deformation layers formed. The microhardness results for the top surface layer of the copper plate sample are 1.723 GPa and 1.752 GPa for 45 and 60 min, respectively, which are about two times higher than that of the matrix. The primary passivate potential of nanocrystalline copper was more negative than that of coarse-grain copper.

关键词： Nanostructured materials Copper Corrosion Microstructure

作者: Wan Ming Lin Ying Hui Wei Li Feng Hou

作者单位: College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024,China

会议类型: 国际会议

会议名称: 2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)

会议地点: 广州

会议语种:英文

页码: 1606-1609

在线出版日期: 2011-11-18（万方平台首次上网日期，不代表论文的发表时间）