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ELECTRODEPOSITION BEHAVIOR OFMnWITHNiIN ACIDIC SULFATE SOLUTIONS

Author

Listed:
  • DAN JI

    (Key Lab of Modern Metallurgy & Materials Processing, Shanghai University, Shanghai 200072, P. R. China)

  • XIAWEN LE

    (Key Lab of Modern Metallurgy & Materials Processing, Shanghai University, Shanghai 200072, P. R. China)

  • QINGDONG ZHONG

    (Key Lab of Modern Metallurgy & Materials Processing, Shanghai University, Shanghai 200072, P. R. China)

  • QIONGYU ZHOU

    (Key Lab of Modern Metallurgy & Materials Processing, Shanghai University, Shanghai 200072, P. R. China)

Abstract

The influence ofMn2+/Ni2+mole ratio in electrolytes on theNi–Mnalloy deposits was studied. The electrodeposition mechanism ofMnwithNiis analyzed by the cyclic voltammogram (CV) and an "induced co-deposition" mechanism is proposed forNi–Mnalloy electrodeposition. The results show that theMncontent inNi–Mnalloy deposit and the hardness increased with the increase ofMn2+/Ni2+mole ratio in electrolytes. When theMn2+/Ni2+mole ratio in bath was 2/1, the corrosion current density of the deposit coating was the lowest and the corresponding corrosion potential was higher, and under these conditions the coating with aMncontent of 1.20 wt.% showed good corrosion resistance. The scanning electron microscopy (SEM) of the alloy coatings exhibited that the morphology ofNi–Mnalloy coatings were different from PureNicoating, and whenMn2+/Ni2+was 2/1, the surface was compact and homogeneous.

Suggested Citation

  • Dan Ji & Xiawen Le & Qingdong Zhong & Qiongyu Zhou, 2014. "ELECTRODEPOSITION BEHAVIOR OFMnWITHNiIN ACIDIC SULFATE SOLUTIONS," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 21(06), pages 1-9.
    • Handle: RePEc:wsi:srlxxx:v:21:y:2014:i:06:n:s0218625x14500838
    DOI: 10.1142/S0218625X14500838
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