Corrosion Behavior of CoCrFeNiTax Alloys in 1 M Sodium Chloride Aqueous Solution

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题名:	Corrosion Behavior of CoCrFeNiTax Alloys in 1 M Sodium Chloride Aqueous Solution
作者:	Tsau, CH (Tsau, Chun-Huei) Hsiao, RW (Hsiao, Rong-Wei) Chien, TY (Chien, Tien-Yu)
贡献者:	化材系
关键词:	CoCrFeNiTax alloys corrosion microstructures hardness polarization test electrochemical impedance spectroscopy critical pitting temperature
日期:	2020-11
上传时间:	2021-01-19 10:15:13 (UTC+8)
摘要:	This paper investigates the effects of Ta content on the microstructures, hardness and corrosion behavior of as-cast CoCrFeNiTax alloys. The results indicate that the addition of Ta can change the microstructures of these alloys to dual-phased structures (FCC + HCP), as well as increasing their hardness. This study uses constant galvanostatic/potentiometric methods to measure the polarization curves of CoCrFeNiTa0.1, CoCrFeNiTa0.3 and CoCrFeNiTa0.5 alloys in deaerated 1 M sodium chloride solution at different temperatures. Electrochemical impedance spectroscopy is also used to analyze these alloys in sodium chloride solution. The results indicate that the CoCrFeNiTa0.5 alloy has a eutectic structure and the highest hardness. Furthermore, although the CoCrFeNiTa0.5 alloy has the best corrosion resistance, the CoCrFeNiTa0.3 alloy has the best pitting resistance among these alloys.
關聯:	MATERIALS 卷冊: 13 期: 22 文獻號碼: 5157
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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