Investigation of slurry erosion-corrosion behavior of Ta(Si1-xAlx)(2) nanocrystalline coatings

doi:10.1088/2053-1591/ab6f39

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	Investigation of slurry erosion-corrosion behavior of Ta(Si1-xAlx)(2) nanocrystalline coatings
	Xu, J 3; Xie, QW 3; Peng, S 3; Li ZY(李正阳)2; Jiang, SY 1
刊名	MATERIALS RESEARCH EXPRESS
	2020-02-01
卷号	7 期号:2 页码:19
关键词	erosion-corrosion refractory metal silicides slurry flow EIS mechanical properties
ISSN号	2053-1591
DOI	10.1088/2053-1591/ab6f39
通讯作者	Xu, Jiang(xujiang73@nuaa.edu.cn)
英文摘要	To enhance the erosion-corrosion resistance of titanium alloys, two Ta(Si1-xAlx)(2) coatings with different Al content were deposited on Ti-6Al-4V alloy by double cathode glow discharge method. The coatings consist of single hexagonal C40 structured TaSi2 phase, which forms an equiaxed grain structure with an average diameter of similar to 5 nm. Al addition was found to enhance the values of H/E and adhesive strength between the substrate and coating. The erosion-corrosion behavior of the coatings was studied in a liquid-solid acid slurry flow (specifically a medium of 5 wt% HCl solution that contained a 10 wt% concentration of silica-based sand) using electrochemical measurements, weight loss tests and SEM observation. The results indicated that the ternary Ta(Si0.875Al0.125)(2) coating provided better protection, compared to the binary TaSi2 coating, against the combined attack of mechanical erosion and electrochemical corrosion in a liquid-solid acid slurry flow. This is attributable to high self-healing ability of the surface passive film and a higher H/E ratio.
分类号	Q3
资助项目	National Natural Science Foundation of China[51635004] ; National Natural Science Foundation of China[51675267]
WOS关键词	ELECTROCHEMICAL-BEHAVIOR ; STAINLESS-STEELS ; RESISTANCE ; TITANIUM ; WEAR ; VELOCITY ; ALLOY ; COMPOSITE ; OXIDATION ; TANTALUM
WOS研究方向	Materials Science
语种	英语
WOS记录号	WOS:000535222500008
资助机构	National Natural Science Foundation of China
其他责任者	Xu, Jiang
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/82084]
专题	力学研究所_先进制造工艺力学重点实验室
作者单位	1.Southeast Univ, Dept Mech Engn, 2 Si Pai Lou, Nanjing 210096, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 3.Nanjing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, 29 Yudao St, Nanjing 210016, Peoples R China;
推荐引用方式 GB/T 7714	Xu, J,Xie, QW,Peng, S,et al. Investigation of slurry erosion-corrosion behavior of Ta(Si1-xAlx)(2) nanocrystalline coatings[J]. MATERIALS RESEARCH EXPRESS,2020,7(2):19.
APA	Xu, J,Xie, QW,Peng, S,李正阳,&Jiang, SY.(2020).Investigation of slurry erosion-corrosion behavior of Ta(Si1-xAlx)(2) nanocrystalline coatings.MATERIALS RESEARCH EXPRESS,7(2),19.
MLA	Xu, J,et al."Investigation of slurry erosion-corrosion behavior of Ta(Si1-xAlx)(2) nanocrystalline coatings".MATERIALS RESEARCH EXPRESS 7.2(2020):19.