高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 264.

• Chemistry in Materials Sciences • 上一篇    下一篇

Preparation of Gd-Ni Film Alloy in Urea-NaBr Melt

LIU Li-Zhi, XU Chang-Wei, LIU Gui-Hua, TONG Ye-Xiang, LIU Guan-Kun   

  1. School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou 510275
  • 出版日期:2000-12-31 发布日期:2000-12-31

Preparation of Gd-Ni Film Alloy in Urea-NaBr Melt

LIU Li-Zhi, XU Chang-Wei, LIU Gui-Hua, TONG Ye-Xiang, LIU Guan-Kun   

  1. School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou 510275
  • Online:2000-12-31 Published:2000-12-31

摘要:

Gd in 4f lanthanon has ferromagnetic-paramagnetism transform temperature (Curie point) and the highest magnetic thermal entropy change at room temperature. So far, it is still the best magnetic refrigeration working substance material. The systems of urea with some alkali metal salts have lower melting point (301~389 K)[1], greater solubility of metal chloride and higher conductivity[2]. In this paper, the electrode processes of Ni (Ⅱ) reduced in urea-NaBr melt, electrodeposition of nickel with gadolinium, and the surface morphology and the structural states of electrodeposited films and films after heat treatment have been investigated.

Abstract:

Gd in 4f lanthanon has ferromagnetic-paramagnetism transform temperature (Curie point) and the highest magnetic thermal entropy change at room temperature. So far, it is still the best magnetic refrigeration working substance material. The systems of urea with some alkali metal salts have lower melting point (301~389 K)[1], greater solubility of metal chloride and higher conductivity[2]. In this paper, the electrode processes of Ni (Ⅱ) reduced in urea-NaBr melt, electrodeposition of nickel with gadolinium, and the surface morphology and the structural states of electrodeposited films and films after heat treatment have been investigated.

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