Effect of ultraviolet illumination on corrosion resistance of 304 austenitic stainless steel in molybdate-containing solution

Chenxi Lv; Yuanyuan Liu; Donghua Suo; Kangkang Zheng; Yangting Sun; Jin Li; Yiming Jiang

Journal of Materials Research and Technology (Jan 2024)

Effect of ultraviolet illumination on corrosion resistance of 304 austenitic stainless steel in molybdate-containing solution

Chenxi Lv,
Yuanyuan Liu,
Donghua Suo,
Kangkang Zheng,
Yangting Sun,
Jin Li,
Yiming Jiang

Affiliations

Chenxi Lv: Department of Materials Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200438, PR China; Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, PR China
Yuanyuan Liu: Department of Materials Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200438, PR China
Donghua Suo: Department of Materials Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200438, PR China
Kangkang Zheng: Department of Materials Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200438, PR China
Yangting Sun: Department of Materials Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200438, PR China
Jin Li: Department of Materials Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200438, PR China
Yiming Jiang: Department of Materials Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200438, PR China; Corresponding author.

Journal volume & issue: Vol. 28
pp. 1263 – 1275

Abstract

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This study investigates the effect of ultraviolet (UV) illumination on the corrosion resistance of 304 stainless steel in molybdate-containing solution. The UV illumination was found to reduce the passivation and pitting resistance of the passive films. In addition, the passive film exhibited n-type semiconductor characteristics. Under UV illumination, the content of Cr2O3 within the passive film decreased. Moreover, the formation of a built-in electric field inhibited the absorption of MoO42− on the substrate surface, thereby weakening the corrosion inhibition of Na2MoO4. This leads to a reduction in the corrosion resistance of the passive film.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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