Electrochemical behaviour of Fe-20Cr-5Al and Fe-20Cr-5Al-0.3Y alloys in aqueous solutions

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	Electrochemical behaviour of Fe-20Cr-5Al and Fe-20Cr-5Al-0.3Y alloys in aqueous solutions
	G. M. Liu; F. Yu; C. R. Zhang; N. Du; M. S. Li
	2008
发表期刊	Corrosion Engineering Science and Technology
ISSN	1478-422X
卷号	43 期号:3 页码:231-235
摘要	The corrosion behaviour of Fe-20Cr-5Al and Fe-20Cr-5Al-0.3Y in three aqueous solutions including 3.5 wt-% NaCl, 3.5 wt-% NaCl + 1.5 wt-% Na2S2O3 and 10 wt-% H2SO4 were investigated by electrochemical techniques. The results showed that Fe-20Cr-5Al-0.3Y exhibited better corrosion resistance than Fe-20Cr-5Al in NaCl solution. When Na2S2O3 was added in the NaCl solution, as expected, the two alloys suffered more serious localised corrosion, however, Fe-20Cr-5Al-0.3Y alloy exhibited better corrosion resistance than Fe-20Cr-5Al. Two alloys exhibited active-passive transition and trended toward general corrosion when tested in H2SO4 solution. The corrosion current densities for each alloy corroded in H2SO4 solution were higher than that corroded in NaCl and NaCl + Na2S2O3. Meanwhile, the addition of a small amount of Y in Fe-20Cr-5Al alloy increased the corrosion resistance of this alloy in H2SO4 solution. The corrosion mechanisms of two alloys and the effect of Y addition on the corrosion behaviour of Fe-20Cr-5Al are discussed.
部门归属	[liu, g. m.; zhang, c. r.; du, n.] nanchang inst aeronaut technol, sch mat sci & engn, nanchang 330063, peoples r china. [yu, f.] nanchang inst aeronaut technol, sch aeronaut & mech engn, nanchang 330063, peoples r china. [li, m. s.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;liu, gm (reprint author), nanchang inst aeronaut technol, sch mat sci & engn, nanchang 330063, peoples r china;tisic@126.com
关键词	Fecral Electrochemical Techniques Aqueous Solutions Corrosion Fe-cr-al Corrosion Behavior Oxidation Temperature Yttrium Lanthanum Additions
URL	查看原文
WOS记录号	WOS:000260571900006
引用统计	被引频次：3[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/321006/32942
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. M. Liu,F. Yu,C. R. Zhang,et al. Electrochemical behaviour of Fe-20Cr-5Al and Fe-20Cr-5Al-0.3Y alloys in aqueous solutions[J]. Corrosion Engineering Science and Technology,2008,43(3):231-235.
APA	G. M. Liu,F. Yu,C. R. Zhang,N. Du,&M. S. Li.(2008).Electrochemical behaviour of Fe-20Cr-5Al and Fe-20Cr-5Al-0.3Y alloys in aqueous solutions.Corrosion Engineering Science and Technology,43(3),231-235.
MLA	G. M. Liu,et al."Electrochemical behaviour of Fe-20Cr-5Al and Fe-20Cr-5Al-0.3Y alloys in aqueous solutions".Corrosion Engineering Science and Technology 43.3(2008):231-235.