Synergistic Effect Mechanism of Different Ions on the Electrochemical Corrosion Behavior of TC4 Titanium Alloy

doi:10.11900/0412.1961.2021.00266

IMR OpenIR

	Synergistic Effect Mechanism of Different Ions on the Electrochemical Corrosion Behavior of TC4 Titanium Alloy
	Zhao Pingping 1; Song Yingwei 1,2; Dong Kaihui 1,2; Han En-Hou 1,2
通讯作者	Song Yingwei(ywsong@imr.ac.cn)
	2023-07-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	59 期号:7 页码:939-946
摘要	Due to the compact passive film, titanium alloys exhibit excellent corrosion resistance. However, during practical applications, the passive film is inevitably damaged by aggressive ions. Among the common ions, F- is the most harmful to the passive film because of its high complexation with Ti. However, the destructiveness of F- varies with pH. Moreover, there are inhibitory ions that reduce the aggressiveness of F-. The acceleration effects of H+ and F- as well as the inhibition effect of Fe3+ on the corrosion behavior of TC4 alloy were examined in this work using electrochemical polarization curves measurements and electrochemical impedance spectroscopy (EIS). The results reveal that whereas H+ has slight destructive effect on the passive film, F- has a considerable aggressive effect. In particular, F- and H+ work synergistically to accelerate the corrosion of the TC4 alloy. The addition of Fe3+ can somewhat reduce corrosion of the TC4 alloy. This can be attributable to the fact that the faster cathodic reduction caused by Fe3+ moves the anodic curves from active-passive region to passive region. Meanwhile, F- is consumed by forming a compound with Fe3+, which mitigates the corrosive effect of F- on passive film.
关键词	titanium alloy electrochemical corrosion synergistic effect passive film ion
资助者	Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)
DOI	10.11900/0412.1961.2021.00266
收录类别	SCI
语种	英语
资助项目	Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)[311021013]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001007541900009
出版者	SCIENCE PRESS
引用统计	被引频次：3[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/321006/178460
专题	中国科学院金属研究所
通讯作者	Song Yingwei
作者单位	1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China
推荐引用方式 GB/T 7714	Zhao Pingping,Song Yingwei,Dong Kaihui,et al. Synergistic Effect Mechanism of Different Ions on the Electrochemical Corrosion Behavior of TC4 Titanium Alloy[J]. ACTA METALLURGICA SINICA,2023,59(7):939-946.
APA	Zhao Pingping,Song Yingwei,Dong Kaihui,&Han En-Hou.(2023).Synergistic Effect Mechanism of Different Ions on the Electrochemical Corrosion Behavior of TC4 Titanium Alloy.ACTA METALLURGICA SINICA,59(7),939-946.
MLA	Zhao Pingping,et al."Synergistic Effect Mechanism of Different Ions on the Electrochemical Corrosion Behavior of TC4 Titanium Alloy".ACTA METALLURGICA SINICA 59.7(2023):939-946.