Acta Phys. -Chim. Sin. ›› 1995, Vol. 11 ›› Issue (12): 1110-1113.doi: 10.3866/PKU.WHXB19951211

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Study on the Co-electrodeposition of Lanthanum with Nickel

Liu Shu-Lan,Tan Qi-Xian,Cheng Dan-Hong,Guo He-Tong   

  1. Department of Applied Chemistry,Tianjin University,Tianjin 300072
  • Received:1994-12-05 Revised:1995-06-05 Published:1995-12-15
  • Contact: Liu Shu-Lan

Abstract:

Co-electrodeposition of lanthanum with nickel from aqueous solution with EDTA as complexing agent was studied. Ni-La alloy coating containing La up to 22.58wt%was obtained. From the results of the experiments it was believed that the codeposition of La with Ni belongs to the inductive codeposition mechanism. By XPS analysis the valences of both La and Ni in the obtained alloy coatings were to be zero. It was proved through the analysis and calculation of the XRD data that all the Ni-La alloy coatings in which La content was equal to or less than 22.58wt% were in crystalline structure of displacement solid solution.

Key words: Rare earth, Ni-La alloy, Electrodeposition, Complexing agent