Effect of chromium on the oxidation of a Fe-10Al alloy at 1000 degrees C

IMR OpenIR

	Effect of chromium on the oxidation of a Fe-10Al alloy at 1000 degrees C
	Zhang, ZG; Niu, Y
通讯作者	Zhang, ZG(zhgzhang@imr.ac.cn)
	2005
发表期刊	PRICM 5: THE FIFTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-5
ISSN	0255-5476
卷号	475-479 页码:685-688
摘要	The effect of the addition of 5 and 10 at.% Cr on the oxidation of a binary Fe-10 at.% Al alloy (Fe-10Al) was studied in 1 atm 02 at 1000 degrees C. Fe-10Al underwent a very slow initial nearly-parabolic stage followed by a breakaway composed of two subsequent parabolic stages with a smaller rate constant for the final period. The two ternary alloys (Fe-5Cr-10Al and Fe-10Cr-10Al) presented two parabolic stages with final rate constants similar to each other and much lower than that for Fe-10AL The alumina scale developed initially on Fe-10Al was replaced later by a layered scale containing mixtures of Fe and Al oxides plus many Fe-rich oxide nodules. Fe-5Cr-10Al was mostly covered by a thin alumina layer just above the alloy surface with some Fe-rich nodules formed in the beginning of oxidation, which later on were healed by alumina with a large decrease of the oxidation rate. A continuous alumina layer formed on the whole sample surface without any Fe-rich nodule for Fe-10Cr-10Al. Therefore, the addition of chromium is obviously beneficial for the oxidation resistance of Fe-10Al by inhibiting the formation of fast-growing Fe-containing oxides and promoting the development of an exclusive alumina layer. However, the effect of chromium is different from the classical third-element effect.
关键词	FeCrAl ternary alloys oxidation Cr effect
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000227494709157
出版者	TRANS TECH PUBLICATIONS LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/82992
通讯作者	Zhang, ZG
作者单位	Chinese Acad Sci, State Key Lab Corros & Protect, Met Res Inst, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, ZG,Niu, Y. Effect of chromium on the oxidation of a Fe-10Al alloy at 1000 degrees C[J]. PRICM 5: THE FIFTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-5,2005,475-479:685-688.
APA	Zhang, ZG,&Niu, Y.(2005).Effect of chromium on the oxidation of a Fe-10Al alloy at 1000 degrees C.PRICM 5: THE FIFTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-5,475-479,685-688.
MLA	Zhang, ZG,et al."Effect of chromium on the oxidation of a Fe-10Al alloy at 1000 degrees C".PRICM 5: THE FIFTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-5 475-479(2005):685-688.