KCl-ZnCl_2沉积盐导致Fe-15Cr-xAl合金表面氧化铬膜的退化
Degradation of the chromia on Fe-15Cr-xA1 alloy induced by KCl-ZnCl_2 deposits
查看参考文献12篇
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文摘
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研究了三种Fe-15Cr-xAl(x=0,5.10,原子分数)合金在600℃于ZnCl_2-KCl盐膜下的腐蚀行为.与氧化相比,所有合金在盐膜下均发生加速腐蚀,生成了疏松多孔的腐蚀产物膜,且发生内腐蚀.合金的腐蚀速率随着铝含量的增加而降低.铝的作用主要是由于Al_2O_3在腐蚀产物内层富集,充当阻挡层有效地阻碍了反应介质在膜中的传递. |
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其他语种文摘
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The corrosion behavior of three Fe-15Cr-xAl(x=0,5,10%) alloys below KCl-ZnCl_2 deposits in air was investigated at 600℃.Compared to their oxidation in air,all the alloys suffered from enhanced corrosion with the formation of non-protective porous scale,particularly in combination with internal attack of matrix.The corrosion rates decreased with increasing aluminum content.The effect of aluminum was mainly attributed to the enrichment of Al_2O_3 in the inner region of the scale,which may act as a barrier by retarding the rapid migration of the reactants. |
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来源
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材料研究学报
,2009,23(4):347-351 【核心库】
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关键词
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材料失效与保护
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Fe-Cr-Al
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KCl-ZnCl_2
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热腐蚀
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地址
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1.
江苏工业学院材料科学与工程学院, 常州高分子新材料重点实验室, 江苏, 常州, 213164
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中国科学院金属研究所, 金属腐蚀与防护国家重点实验室, 辽宁, 沈阳, 110016
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1005-3093 |
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学科
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一般工业技术 |
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基金
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国家自然科学基金
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江苏省高校自然科学基金
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江苏省常州市科技攻关项目
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文献收藏号
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CSCD:3657400
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