高能喷丸处理工业纯钛焊接接头在10%HCl溶液中的腐蚀行为

doi:10.11896/j.issn.1005-023X.2018.09.023

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Abstract The decay resistance of industrial pure titanium welding joint in 10% HCl solution was improved by HESP, and electrochemical corrosion behavior and mechanism of it was investigated by using polarization curve and alternation current impedance tests coupled with Mott-Schottky curve. The results revealed that the surface grain size of industrial pure titanium welding joint with HESP treatment reached to refinement, from the surface to matrix the grain size was from small to big with a gradient distribution. HESP treatment improved the decay resistance of industrial pure titanium welding joint in 10% HCl solution, the most optimized treatment index was treatment technique of 0.2 MPa-60 min. The passive films of base metal of welding joint with HESP treatment in 10% HCl solution exhibited characteristic of n-type semiconductivity, material surface had relatively less defects, passive films ranged close, which implyed it had a relatively good decay resistance. After HESP treatment, the thickness of passive films of metal surface was bigger than untreated sample so that HESP improved the material decay resistance function.

Key words： surface strengthening treatment welded joint electrochemical corrosion

Published: 10 May 2018 Online: 2018-07-06

CLC number:

TG14

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	Articles by authors
	ZHANG Conghui
	WANG Jing
	SONG Wei
	WANG Yang
	ZHAO Xu
	WANG Yaomian

Cite this article:

ZHANG Conghui,WANG Jing,SONG Wei, et al. An Analyses of High Energy Shot-peening (HESP) Industrial Pure TitaniumWelded Joints’ Corrosion Behavior in 10% HCl Solution[J]. Materials Reports, 2018, 32(9): 1564-1570.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.09.023 OR https://www.mater-rep.com/EN/Y2018/V32/I9/1564

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