Oxidation of two ternary Fe-Cu-5Al alloys in 1 x 10(5) Pa pure oxygen at 700 degrees C

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	Oxidation of two ternary Fe-Cu-5Al alloys in 1 x 10(5) Pa pure oxygen at 700 degrees C
	J. H. Xiang; Y. Niu; W. T. Wu; G. D. Liu
	2006
发表期刊	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
卷号	16 页码:S829-S833
摘要	The oxidation of two two-phase ternary Fe-Cu-Al alloys containing about 5% AI(mole fraction), one Fe-rich and one Cu-rich, were studied at 700 degrees C in 1 x 10(5) Pa pure oxygen. The Fe-rich alloy (Fe-15Cu-5Al) shows two quasi-parabolic stages, with a large increase of the parabolic rate constant after about 4 h. The presence of 5% Al does not change greatly the oxidation rate of Fe-15Cu-5Al with respect to a binary Fe-Cia alloy of similar composition, which was quite different from the situation of the same alloys oxidized at 800 degrees C. Oxidation of Fe-15Cu-5Al at 700 degrees C produced an outer layer of iron oxides and an inner layer containing a mixture of copper metal, iron and aluminium oxide. On the contrary, the Cu-rich Fe-85Cu-5Al alloy presents a rather irregular kinetic behavior, with formation of an inner continuous alumina thin layer and a rather irregular outer layer. The outer layer with a rather irregular thickness was mainly composed of a matrix of copper oxides plus some aluminium and iron oxides presenting in the deep part of the layer at certain locations. As a result of the formation of a protective alumina layer, the presence of 5% Al greatly reduced the oxidation rate of Fe-85Cu-5Al with respect to a binary Fe-Cu alloy of similar composition, which was also quite different from the situation of the same alloys oxidized at 800 degrees C. Moreover, the oxidation rate at 700 degrees C of the Fe-85Cu-5AI alloy was much lower than that of Fe-15Cu-5Al alloy due to the same reason..
部门归属	jiangxi sci & technol normal univ, jiangxi key lab surface engn, nanchang 330013, peoples r china. chinese acad sci, met res inst, state key lab corros & protect, shenyang 110016, peoples r china.;xiang, jh (reprint author), jiangxi sci & technol normal univ, jiangxi key lab surface engn, nanchang 330013, peoples r china;xiangjunhuai@163.com
关键词	Fe-cu-5al Ternary Alloy High Temperature Oxidation At.percent-al-alloys Forming Insoluble Oxides Approximate Analysis External Oxidation Oxidant Pressures Degrees-c 1 Atm O-2 800-900-degrees-c 1-atm
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WOS记录号	WOS:000238442600082
引用统计	被引频次：2[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/321006/34589
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. H. Xiang,Y. Niu,W. T. Wu,et al. Oxidation of two ternary Fe-Cu-5Al alloys in 1 x 10(5) Pa pure oxygen at 700 degrees C[J]. Transactions of Nonferrous Metals Society of China,2006,16:S829-S833.
APA	J. H. Xiang,Y. Niu,W. T. Wu,&G. D. Liu.(2006).Oxidation of two ternary Fe-Cu-5Al alloys in 1 x 10(5) Pa pure oxygen at 700 degrees C.Transactions of Nonferrous Metals Society of China,16,S829-S833.
MLA	J. H. Xiang,et al."Oxidation of two ternary Fe-Cu-5Al alloys in 1 x 10(5) Pa pure oxygen at 700 degrees C".Transactions of Nonferrous Metals Society of China 16(2006):S829-S833.