Effect of the aluminium content of AlxCrFe1.5MnNi0.5 high-entropy alloys on. the corrosion behaviour in aqueous environments

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题名:	Effect of the aluminium content of AlxCrFe1.5MnNi0.5 high-entropy alloys on. the corrosion behaviour in aqueous environments
作者:	Lee, C. P. Chang, C. C Chen, Y. Y. Yeh, J. W. Shih, H. C.
贡献者:	化材系
关键词:	alloy polarization EIS passivity pitting corrosion
日期:	2008
上传时间:	2009-11-06 11:57:41 (UTC+8)
摘要:	High-entropy alloys (HEAs) are a newly developed family of multi-component alloys. The potentiodynamic polarization and electrochemical impedance spectroscopy of the AlxCrFe1.5MnNi0.5 alloys, obtained in H2SO4 and NaCl solutions, clearly revealed that the corrosion resistance increases as the concentration of aluminium decreases. The AlxCrFe1.5MnNi0.5 alloys exhibited a wide passive region, which extended >1000 mV in acidic environments. The Nyquist plots of the Al-containing alloys had two capacitive loops, which represented the electrical double layer and the adsorptive layer. SEM micrographs revealed that the general and pitting corrosion susceptibility of the HEAs increased as the amount of aluminium in the alloy increased. (C) 2008 Elsevier Ltd. All rights reserved.
關聯:	CORROSION SCIENCE Volume: 50 Issue: 7 Pages: 2053-2060
显示于类别:	[化學工程與材料工程學系暨碩士班] 期刊論文

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