Affiliation:
1. Harbin Institute of Technology in Weihai
2. Harbin Institute of Technology at Weihai
3. Zhejiang University
Abstract
Nano Zn-Fe coatings in a chloride electrolyte with additives by reverse pulse current were obtained and the anticorrosion was investigated. The morghology and crystal size of Zn-Fe alloy depositions were measured by scanning electron microscope and atom force microscope. Coatings with 30 nm or so crystal size was obtained with mean current density 9.0 A•dm-2, duty cycle 60%, frequency 500 Hz and time of negative to positive 30 ms ∶8 ms. It was detected by X-ray diffraction that the pulse plated coatings of Zn–Fe were mixtures of two phases, one of them being the α-phase and the other pure zinc or the α-phase with a significantly lower proportion of Fe. The pulse plated Zn-Fe coatings’ corrosion resistance was greatly improved compared with Zn-Fe coatings by direct current according to Tafel tests, saline immersion and salt spray tests. The anticorrosion of Zn-Fe coatings with 30 nm crystal size was 2~3 times than that of normal Zn-Fe alloy deposits.
Publisher
Trans Tech Publications, Ltd.
Reference22 articles.
1. L.L. Barbosa, and I.A. Carlos: Surf. Coat. Tech. Vol. 201(2006), p.1695.
2. T. Tsuru, S. Kobayashi, T. Akiyama, H. Fukushima, S. K. Gogia and R. Kammel, J. Appl. Electrochem. Vol. 27(1997), p.209.
3. R. Ramanauskas, L. Gudavičiūtė, R. Juškėnas and O. Ščit: Chemija Vol. 19(2008), p.7.
4. D. Vasilakopoulos, M. Bouroushian, and N. Spyrellis: J. Mater. Sci. Vol. 41(2006), p.2869.
5. R. Ramanauskas, L. Gudavičiūtė, O. Ščit and R. Juškėnas: Tran. Inst. Met. Finish. Vol. 86(2008), p.103.
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