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研究论文

非晶态Ni-Ce-P合金的共沉积与耐蚀性能

  • 刘江 ,
  • 蒋雄 ,
  • 江琳才 ,
  • 朱则善
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  • 福建师范大学化学系!福建福州350007,华南师范大学化学系!广东广州510631,华南师范大学化学系!广东广州510631,福建师范大学化学系!福建福州350007

收稿日期: 2001-08-28

  修回日期: 2001-08-28

  网络出版日期: 2001-08-28

Codeposition and Corrosion Resistance of Nickel-Cerium-Phosphorus Amorphous Alloys

  • LIU Jiang ,
  • JIANG Xiong ,
  • JIANG Lin_cai ,
  • ZHU Ze_shan
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  • (1. Dept. of Chem., Fujian Teachers' Univ., Fuzhou 350007,China; 2. Dept. of Chem., South China Normal Univ., Guangzhou 510631, China

Received date: 2001-08-28

  Revised date: 2001-08-28

  Online published: 2001-08-28

摘要

采用恒电位沉积、循环状安等方法研究了在水溶液中电沉积稀土合金的可能性 ,首次在含有CeCl3的弱酸性NaH2 PO2 镀液中获得了不同铈含量的Ni Ce P合金镀层 ,XPS、AES、XRD和SEM等实验技术表征了镀层的组成和结构 ,极化电阻和腐蚀电位的测试数据表明此镀层与Ni P无定形合金相比 ,具有更强的耐腐蚀能力 ,同时 ,讨论了沉积条件与镀层耐蚀性能的关系 ,结论是 :镀层中铈含量越高 ,其耐腐蚀性能越好 ,此外还对Ni Ce P的共沉积机理进行了初步探讨 ,指出在所研究的电沉积条件下 ,Ni Ce P合金共沉积可以用“诱导共沉积理论”合理解释

本文引用格式

刘江 , 蒋雄 , 江琳才 , 朱则善 . 非晶态Ni-Ce-P合金的共沉积与耐蚀性能[J]. 电化学, 2001 , 7(3) : 294 -301 . DOI: 10.61558/2993-074X.3259

Abstract

The possibility of electrodeposition of rare earth alloys from aqueous bath was investigated using varous techniques such as linear potential sweeping, cyclic voltammetry, electrodepositon at constant potential etc. The Ni Ce P alloys with different cerium content were electrodeposited from a weakly acidic solution containing CeCl 3, NaH 2PO 2 and so on the crystal structure and component were characterized by XPS, AES, XRD and SEM observation. The codeposits were found to be more highly corrosion resistent than that of Ni P amorphous alloys by measuring polarization resistance and corrosion potential. The effects of codeposition conditions on the corrosion resistance were discussed. The conclusion is that the codeposition of cerium can signficantly improve corrosion resistance of the Ni Ce P alloys, which increases with increasing the cerium content in the coatings. The codeposition mechanism of Ni Ce P was preliminarily explored; under the existing experimental conditions and based on the results obtained, it is suggested that the codeposition of Ni Ce P is likely to occur by an induced codeposition mechanism.

参考文献

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