碳钢焊缝在混凝土孔隙液中的优先腐蚀行为与亚硝酸盐缓蚀剂作用效果<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.018.024

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Abstract Through the development of an eight-channel multi-electrode array sensor system and the immersion test, the corrosion process of carbon steel weld and the inhibition performance of nitrite on weld were studied in simulation pore solution. The galvanic corrosion among weld metal, heat affected zone and base metal and the inhibition performance of nitrite were studied by measuring the individual open circuit potential, coupled potential and galvanic current. The measurement results of multi-electrode array sensor system and immersion test showed the weld metal and the nearby area of weld metal would corrode preferentially. The inhibitor NaNO₂ performed well inhibition effect for the welding corrosion by reducing the galvanic current apparently.

Key words： corrosion of weldments multi-electrode array sensor nitrite localized corrosion

Published: 25 September 2017 Online: 2018-05-08

CLC number:

TG172.2

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	Articles by authors
	LIU Liang
	XU Yunze
	WANG Xiaona
	HE Limin
	HUANG Yi

Cite this article:

LIU Liang,XU Yunze,WANG Xiaona, et al. Preferential Corrosion Behavior of Carbon Steel Weld in Simulation Pore Solution and the Inhibition Performance of Nitrite[J]. Materials Reports, 2017, 31(18): 119-124.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.018.024 OR https://www.mater-rep.com/EN/Y2017/V31/I18/119

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