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材料研究学报  2008, Vol. 22 Issue (6): 606-610    
  研究论文 本期目录 | 过刊浏览 |
气氛中硫和氯导致Fe--15Cr--10Al合金表面氧化铝膜退化
潘太军1†;牛焱2
1.江苏工业学院材料科学与工程学院~常州市高分子新材料重点实验室 常州 213164
2.中国科学院金属研究所金属腐蚀与防护国家重点实验室  沈阳 110016
Degradation of alumina formed on Fe–15Cr–10Al alloy induced by chlorine and sulfur in atmospheres
 PAN Taijun1†; NIU Yan2
1.School of Materials Science and Engineering; Jiangsu Polytechnic University;
Key Laboratory for Polymer Materials; Changzhou 213164
2.State Key Laboratory for Corrosion and Protection; Institute of Metal Research;
the Chinese Academy of Science; Shenyang 110016
引用本文:

潘太军 牛焱. 气氛中硫和氯导致Fe--15Cr--10Al合金表面氧化铝膜退化[J]. 材料研究学报, 2008, 22(6): 606-610.
, . Degradation of alumina formed on Fe–15Cr–10Al alloy induced by chlorine and sulfur in atmospheres[J]. Chin J Mater Res, 2008, 22(6): 606-610.

全文: PDF(815 KB)  
摘要: 

研究了Fe--15Cr--10Al合金在700℃还原性H2--CO2和H2--HCl--H2S--HCl混合气氛中的腐蚀行为. 结果表明, 添加到H2--CO2气氛中的微量HCl和H2S导致合金表面氧化铝膜退化,在合金表面生成了铁铬铝混合氧化物层.这种退化与腐蚀过程中生成的硫化物和氯化物密切相关.计算混合气氛中平衡时的氯势、氧势和硫势预测了合金与气氛可能发生的反应,并解释了腐蚀机制.

关键词 材料失效与保护 Fe--Cr--Al合金 氧化 退化    
Abstract

The corrosion behavior of Fe–15Cr–10Al alloy was examined at 700 °C in the reducing H2--CO2  and H2--HCl--H2S--HClatmosphere. As a result, the minor addition of HCl and H2S to a H2--CO2 atmosphere induced the degradation of protective alumina and the growth of Fe, Cr and Al oxide mixtures on the surface of Fe–15Cr–10Al alloy, which was attributed to the formation of sulfides  and chlorides in the scales during corrosion procedure. The equilibrium partial pressures of  chlorine, oxygen and sulfur in the mixed gases were calculated to estimate the possible reactions  between the alloy components and the multi–reactants, and their corrosion mechanisms were  also interpreted.

Key wordsmaterials failure and protection    Fe–Cr–Al alloy    chlorine    sulfur    degradation
收稿日期: 2008-04-08     
ZTFLH: 

TB304

 
基金资助:

国家自然科学基金(50671114);江苏省高校自然科学基金(08KJB43003)

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