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Jet Electrodeposited Cu-Al2O3 Nanocomposite Coatings

[+] Author Affiliations
Jin-Song Chen, Yin-Hui Huang, Zhi-Dong Liu, Zong-Jun Tian

Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, China

Paper No. MNC2007-21103, pp. 1227-1230; 4 pages
doi:10.1115/MNC2007-21103
From:
  • 2007 First International Conference on Integration and Commercialization of Micro and Nanosystems
  • First International Conference on Integration and Commercialization of Micro and Nanosystems, Parts A and B
  • Sanya, Hainan, China, January 10–13, 2007
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4265-7 | eISBN: 0-7918-3794-7
  • Copyright © 2007 by ASME

abstract

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 of Al2 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/dm2 , temperature 30°C, and electrolyte jet velocity 8 m/s. The addition of Al2 O3 in copper increases the microhardness of the electrodeposited coatings.

Copyright © 2007 by ASME

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