合金钢在氯盐与硫酸盐作用下的腐蚀行为与机理

doi:10.11896/cldb.24030019

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Abstract The corrosion behavior of pre-passivated alloy steel in a saturated Ca(OH)₂ simulated concrete pore solution was analyzed under the action of chlorides and sulfates through corrosion potential, linear polarization resistance, corrosion current density, and electrochemical impedance spectroscopy. By leveraging the Pourbaix diagram of the Fe-Cr-H₂O alloy system, the action mechanisms of two ions in the corrosion process was investigated. Results showed that the corrosion rate of steel was the highest with chlorides only, and the lowest with sulfates only, and intermediate with both ions. Finally, based on theoretical analysis, a reaction mechanism model of the competitive adsorption and catalysis of corrosion by chlorides and sulfates in lalloy steel corrosion was proposed.

Key words： alloy steel corrosion composite corrosive ions chloride sulfate

Published: 25 April 2025 Online: 2025-04-18

CLC number:

TU528

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	Articles by authors
	YUAN Junxiang
	LIU Guojian
	LIU Zhiyong
	SHE Wei
	ZHANG Yunsheng

Cite this article:

YUAN Junxiang,LIU Guojian,LIU Zhiyong, et al. Corrosion Behavior and Mechanism of Alloy Steel Submitted to Chloride and Sulfate[J]. Materials Reports, 2025, 39(8): 24030019-7.

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https://www.mater-rep.com/EN/10.11896/cldb.24030019 OR https://www.mater-rep.com/EN/Y2025/V39/I8/24030019

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