中华医学超声杂志

应用化学 ›› 1993, Vol. 0 ›› Issue (5): 110-112.

• 研究简报 • 上一篇    

Ni-Al系金属间化合物熔盐热腐蚀后的交流阻抗研究

曾潮流, 张鉴清, 牛焱, 吴维(山文)   

  1. 中国科学院金属腐蚀与防护研究所腐蚀科学开放研究实验室 110015 沈阳
  • 收稿日期:1992-10-20 修回日期:1993-05-04 出版日期:1993-10-10 发布日期:1993-10-10
  • 基金资助:
    国家自然科学基金;国家高技术委员会联合资助项目

AC IMPEDANCE OF Ni-AI INTERMETALLIC COMPOUNDS AFTER HOT CORROSION

Zeng Chaoliu, Zhang Jianqing, Niu Yan, Wu Weitao   

  1. Corrosion Science Laboratory, Institute of Corrosion and Protection of Metals, Chinese Academy of Sciences, 110015 Shenyang
  • Received:1992-10-20 Revised:1993-05-04 Published:1993-10-10 Online:1993-10-10

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摘要： 近年来,Ni-Al基金属间化合物的研究特别活跃,是一类潜在高温结构材料。作者曾研究了铁基合金熔盐腐蚀的阻抗特征,提出了阻抗模型及图谱解析方法。本文研究Ni-Al系金属间化合物熔盐热腐蚀的阻抗特征。

关键词: Ni-Al金属间化合物, 熔融盐, 热腐蚀, 交流阻抗

Abstract: Hot corrosion of Ni-Al intermetallic compounds in molten (Na,K, Li)2SO4 has been studied by AC impedance technique. The hot corrosion of Ni-Al alloys was shown to be a diffusion-controlled process.The parameters in the corresponding equivalent circuit was calculated by the IFP technique. The results showed that the value of the charge-transfer resistance of Ni-Al alloys was very small,which indicates the lower anticorrosive character of the alloys. The mechanism of Ni-Al alloys during hot corrosion has been discussed.

Key words: Ni-Al intermetallic compound, molten salt, hot corrosion, AC impedance

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