Corrosion of three commercial steels under ZnCl2-KCl deposits in a reducing atmosphere containing HCl and H2S at 400-500 degrees C

IMR OpenIR

	Corrosion of three commercial steels under ZnCl2-KCl deposits in a reducing atmosphere containing HCl and H2S at 400-500 degrees C; Corrosion of three commercial steels under ZnCl2-KCl deposits in a reducing atmosphere containing HCl and H2S at 400-500 degrees C
	T. J. Pan; C. L. Zeng; Y. Niu
	2007 ; 2007
发表期刊	Oxidation of Metals ; Oxidation of Metals
ISSN	0030-770X ; 0030-770X
卷号	67 期号:1-2 页码:107-127
摘要	The corrosion of three commercial steels in a reducing atmosphere containing HCl plus H2S in the presence of ZnCl2-KCl deposits has been investigated at 400-500 degrees C and compared with the corrosion of the same materials in a similar gas mixture free from H2S. The presence of H2S in the gas accelerated the corrosion of the three commercial steels beneath ZnCl2-KCl deposits. All materials suffered from severe corrosion with partial detachment and spalling of the external scales. Degradation of the steels resulted from the penetration of chlorine-containing species through the scale formed initially down to the metal matrix, because chorine-rich species were detected close to the alloy/scale interface. Although the corrosion resistance generally increased with increasing Cr content, even the high-Cr stainless steel SS304 is still unable to provide good corrosion resistance against the ZnCl2-KCl deposits in the presence of H2S due to the bad adherence of the scales to the alloy. The mechanisms of attack are discussed on the basis of thermodynamic considerations and of the active-oxidation model.; The corrosion of three commercial steels in a reducing atmosphere containing HCl plus H2S in the presence of ZnCl2-KCl deposits has been investigated at 400-500 degrees C and compared with the corrosion of the same materials in a similar gas mixture free from H2S. The presence of H2S in the gas accelerated the corrosion of the three commercial steels beneath ZnCl2-KCl deposits. All materials suffered from severe corrosion with partial detachment and spalling of the external scales. Degradation of the steels resulted from the penetration of chlorine-containing species through the scale formed initially down to the metal matrix, because chorine-rich species were detected close to the alloy/scale interface. Although the corrosion resistance generally increased with increasing Cr content, even the high-Cr stainless steel SS304 is still unable to provide good corrosion resistance against the ZnCl2-KCl deposits in the presence of H2S due to the bad adherence of the scales to the alloy. The mechanisms of attack are discussed on the basis of thermodynamic considerations and of the active-oxidation model.
部门归属	chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china.;niu, y (reprint author), chinese acad sci, state key lab corros & protect, inst met res, wencui rd 62, shenyang 110016, peoples r china;yniu@imr.ac.cn ; chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china.;niu, y (reprint author), chinese acad sci, state key lab corros & protect, inst met res, wencui rd 62, shenyang 110016, peoples r china;yniu@imr.ac.cn
关键词	Steels Steels Chlorides Chlorides Reducing Atmosphere Reducing Atmosphere Corrosion Corrosion Hcl And H2s Effects Hcl And H2s Effects High-temperature Corrosion High-temperature Corrosion Alloys Alloys Oxidation Oxidation Mixtures Mixtures Nickel Nickel Iron Iron 400-700-degrees-c 400-700-degrees-c Environments Environments Chloridation Chloridation Chromium Chromium
URL	查看原文 ; 查看原文
WOS记录号	WOS:000243823700006 ; WOS:000243823700006
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33774
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	T. J. Pan,C. L. Zeng,Y. Niu. Corrosion of three commercial steels under ZnCl2-KCl deposits in a reducing atmosphere containing HCl and H2S at 400-500 degrees C, Corrosion of three commercial steels under ZnCl2-KCl deposits in a reducing atmosphere containing HCl and H2S at 400-500 degrees C[J]. Oxidation of Metals, Oxidation of Metals,2007, 2007,67, 67(1-2):107-127, 107-127.
APA	T. J. Pan,C. L. Zeng,&Y. Niu.(2007).Corrosion of three commercial steels under ZnCl2-KCl deposits in a reducing atmosphere containing HCl and H2S at 400-500 degrees C.Oxidation of Metals,67(1-2),107-127.
MLA	T. J. Pan,et al."Corrosion of three commercial steels under ZnCl2-KCl deposits in a reducing atmosphere containing HCl and H2S at 400-500 degrees C".Oxidation of Metals 67.1-2(2007):107-127.