Corrosion resistance improvement on 316L stainless steel using humidity-assisted nanosecond laser pulses

IF 3.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2025-05-17 DOI:10.1007/s10853-025-10921-7

Cong-Qian Cheng, Ping Li, Hui-Jie Shi, Dilshad Ali, Jun-Yan Li, Dong-Jiu Zhang, Ji-Bin Pei, Zi-Jian Wang, Tie-Shan Cao, Dun Liu, Jie Zhao

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Abstract

A novel method for enhancing the corrosion resistance of 316L stainless steel was investigated using nanosecond laser pulses in a high-relative humidity environment. The effects of parameters relative humidity level, overlap rate, and irradiation fluence on 316L stainless steel’s breakdown potential and impedance were studied. Increasing the overlap rate and the fluence initially increased the breakdown potential but later reduced it as both parameters increased further. A higher level of relative humidity significantly enhanced the breakdown potential and impedance. Significant positive breakdown potential above 1.0 V (Ag/AgCl) with good repeatability was achieved at the optimal laser irradiation parameters under the humidity level of 95%. Based on the microstructure and composition analyses, the oxide film formed with modifications such as compactness, film thickness, and high relative content of chromium oxide by the laser irradiation in a humidity environment. These modifications were responsible for the significant enhancement of corrosion resistance.

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利用湿度辅助纳秒激光脉冲提高316L不锈钢的耐腐蚀性能

研究了一种在高相对湿度环境下利用纳秒激光脉冲增强316L不锈钢耐腐蚀性能的新方法。研究了相对湿度、重叠率和辐照影响对316L不锈钢击穿电位和阻抗的影响。增加重叠率和通量，初始击穿电位增加，但随着两个参数的进一步增加，击穿电位随后降低。较高的相对湿度显著提高了击穿电位和阻抗。在湿度为95%的最佳激光辐照参数下，获得了显著的高于1.0 V （Ag/AgCl）的正击穿电位，且具有良好的重复性。根据微观结构和成分分析，在湿度环境下激光照射形成的氧化膜致密、膜厚、氧化铬相对含量较高。这些改性可显著提高材料的耐蚀性。

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.