吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (02): 363-367.

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Effects of surfactants on corrosion behavior of chromium-free electroless nickel deposit on magnesium alloy

RUAN De-wen1, SUDAGAR Jothi2, LIANG Ya-qin1, ELANSEZHIAN Rasu2, LIAN Jian-she1   

  1. 1. College of Materials Science and Engineering, Jilin University, Changchun 130022, China;
    2. Department of Mechanical Engineering, Pondicherry Engineering College, Pondicherry 605014, India
  • Received:2012-05-21 Online:2013-03-01 Published:2013-03-01

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Abstract: The nickel coating was electroless chemically deposited on AZ91D magnesium alloy and the effects of the surfactant on its corrosion behavior were investigated. The corrosion tests were carried out by immersion test(1 mol/L HCl) and electrochemical polarization test(3.5% NaCl). The tests showed that the surfactant in the electroless nickel deposit bath enhances the corrosion resistance of the deposit on the magnesium alloy. In addition smoothness and amorphous plus nano-crystalline phases enhance its corrosion resistance significantly. The polarization tests showed that the corrosion potential moved towards the positive direction and the corrosion current density decreased. The immersion tests showed the same trend as that of the electrochemical polarization tests. On the whole, the corrosion resistance was enhanced by positive ion surfactants in the electroless deposits on the magnesium alloy.

Key words: metallic material, surfactant, electroless nickel deposit, corrosion, magnesium alloy

CLC Number: 

  • TG174
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