Improving corrosion resistance of SUS301L stainless steel joint surface by two-step irradiation with different laser beams: First Gaussian beam and then top-hat beam

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-03-18 DOI:10.1016/j.corsci.2025.112872

Xiao-Yan Zhao , Cong-Qian Cheng , Xiao-Guang Sun , Tie-Shan Cao , Jie Zhao , Dun Liu

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引用次数: 0

Abstract

A Nanosecond pulse laser can effectively remove the oxide scale on the surface of SUS301L stainless steel joints and help improve corrosion resistance. This work compared and analyzed the effects of the top-hat beam, Gaussian beam, and two-step method (first Gaussian beam and then top-hat beam) treatment on the corrosion behavior of joint surfaces. Activation dissolution behavior without the passive region was still found in the thick oxide scale's potentiodynamic polarization curves, which had not been removed after the top-hat beam irradiation; After Gaussian beam irradiation, the oxide scale in various local rejoins was effectively removed and passivation zones appeared. Still, the outer edge of the pulse crater with poor protection tended to corrode preferentially; By using a two-step method, first cleaned with a Gaussian beam, and then irradiated with a top-hat beam, a smooth silver-white surface with the highest pitting potential, the largest impedance, and shallow disc-shaped pit morphology can be obtained. TEM observation found that higher corrosion resistance is related to surface Cr-rich oxide film regeneration. This work provides a new approach for laser processing of oxide scales on the surface of joints.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.