JET ElECTRDEPOSITED Cu-Al2O3 NANOCOMPOSITE COATINGS

摘要：

A jet electrodeposition device was carried out to prepare Cu-Al2 O3 nanocomposite coatings. The influence of the concentration of Al2 O3 in the electrolyte and parameters, such as cathodic current density, the electrolyte temperature as well as the electrolyte jet velocity, on the content of the Al2 O3 in the deposite were investigated. The coatings ingredient and microstructure was measured by the scanning electron microscope(SEM) with energy dispersive analyzer system (EDX), the microhardness tests were conducted on an microhardness tester. The results show that the jet electrodeposition can fine crystalline particles. The copper deposited layers have nanocrystalline microstructure with grain size of about 50nm . The amount of Al2 O3 in composites first increased and then decreased with an increase in the concentration ofAl2 O3 , current density, temperature and jet velocity. The composite with optimum atomic percent of Al2 O3 (14.4 at％) can be obtained at the concentration of 30 g/l , cathodic current densities 300 A/dm 2 , temperature 30 , and electrolyte jet velocity 8 m/s . The addition of Al2 O3 in copper increases the microhardness of the electrodeposited coatings.

关键词： jet electrodeposition nanocrystalline current density grain size nanocomposite coatings

作者: Jin-song Chen Yin-hui Huang Zhi-dong Liu Zong-jun Tian

作者单位: College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics & Astronautics, Nanjing, jiangsu China

会议类型: 国际会议

会议名称: 2007年微纳系统集成及其商业化应用国际学术会议(2007 International Conference & Exhibition on Integration and Commercialization of Micro and Nano-Systems)

会议地点: 海南三亚

会议语种:英文

在线出版日期: 2007-01-10（万方平台首次上网日期，不代表论文的发表时间）