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Effect of doping aluminum and yttrium on high-temperature oxidation behavior of Ni-11Fe-10Cu alloy
Cheng, XH; Fan, L; Liu, L; Du, KF; Wang, DH; Wang, DH (reprint author), Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.
2016-11-01
Source PublicationJOURNAL OF RARE EARTHS
ISSN1002-0721
Volume34Issue:11Pages:1139-1147
AbstractAiming to develop materials for construction of the set-up and electrode of high-temperature molten salt reactors, the effect of Al and Y on the high-temperature oxidation behavior of Ni-11Fe-10Cu at 750 and 950 degrees C in air were investigated. The oxidation kinetics of Ni-11Fe-10Cu alloy followed parabolic law at 750 degrees C without spallation and linear law at 950 degrees C with severe spallation, while that of Ni-11Fe-10Cu-6Al-3Y alloy followed parabolic law at 750 and 950 degrees C without spallation. The parabolic rate constant (kp) of Ni-11Fe-10Cu was smaller than that of Ni-11Fe-10Cu-6Al-3Y at 750 degrees C. The oxide scale formed on Ni-11Fe-10Cu at 750 degrees C was composed of a CuO outer layer, a NiFe2O4 middle layer and a NiO inner layer. The oxide scale formed on Ni-11Fe-10Cu-6Al-3Y at 750 degrees C was also composed of the similar triplex layers in addition to an internal oxidation zone containing Al, Ni and Cu oxide and the microstructure of the scale changed with increasing temperature. Although the doping Al and Y could improve the adherence of oxide scale, it could aggravate the extent of internal oxidation. Based on the combination of X-ray diffraction (XRD), scanning electron microscopy/energy dispersive spectroscopy (SEM/EDX) analysis, the microstructure and growth mechanism of the multi-layer oxide scale was studied and the effect of doping Al and Y on the oxidation behavior of Ni-11Fe-10Cu alloy was also discussed.
description.department[cheng xinhua ; du kaifa ; wang dihua] wuhan univ, sch resource & environm sci, wuhan 430072, peoples r china ; [fan lei ; liu li] chinese acad sci, inst met res, shenyang 10016, peoples r china
KeywordNi-fe-cu Alloy Doping Rare Earths High-temperature Oxidation Behavior Multi-layer Oxide Scale
Subject AreaChemistry, Applied
Funding OrganizationNational Natural Science Foundation of China [51325102]; International Science and Technology Cooperation Program of Ministry of Science and Technology [2015DFA90750]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/76201
Collection中国科学院金属研究所
Corresponding AuthorWang, DH (reprint author), Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.
Recommended Citation
GB/T 7714
Cheng, XH,Fan, L,Liu, L,et al. Effect of doping aluminum and yttrium on high-temperature oxidation behavior of Ni-11Fe-10Cu alloy[J]. JOURNAL OF RARE EARTHS,2016,34(11):1139-1147.
APA Cheng, XH,Fan, L,Liu, L,Du, KF,Wang, DH,&Wang, DH .(2016).Effect of doping aluminum and yttrium on high-temperature oxidation behavior of Ni-11Fe-10Cu alloy.JOURNAL OF RARE EARTHS,34(11),1139-1147.
MLA Cheng, XH,et al."Effect of doping aluminum and yttrium on high-temperature oxidation behavior of Ni-11Fe-10Cu alloy".JOURNAL OF RARE EARTHS 34.11(2016):1139-1147.
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