Significant reduction of corrosion of stainless steel by strong-field laser surface passivation.

IF 23.4 Q1 OPTICS

Light-Science & Applications Pub Date : 2025-10-05 DOI:10.1038/s41377-025-01952-5

Liansheng Zheng,Hongwei Zang,Yuan Liu,Yukun Xiao,Yingbo Cong,Zhen Cheng,Ganwen Chen,Zhenxiang Xing,Jisheng Pan,Qing Jiang,Wei Chen,Kaoru Yamanouchi,Huailiang Xu,Ruxin Li

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Abstract

Stainless steels are basic corrosion-resistant materials, but despite great efforts for over a century, they still suffer inevitably from environmental erosions by ubiquitous chemical reactions, resulting in typical corrosion rates at dozens of μm∙yr-1. Here, we developed a strong-field laser passivation strategy to obtain super corrosion-resistant stainless steels through forming a hybrid µm-Fe3O4/Fe2O3/Cr2O3 passivation layer with unique bionic taro-leaf-like hierarchically heterogeneous Cassie-state micro/nanostructure morphologies. We observed up to 100,000-fold reduction in the corrosion rate of AISI 304 steel in saline, acidic as well as alkaline solutions. The ultralow corrosion rate can remain for >6500 hours. The generality was exemplified by exhibiting extreme anticorrosion enhancements of AISI 316, 420, 201, 430, and 2205 steels under the same conditions. This study reveals a new strategy for achieving super corrosion-resistant performance of stainless steels in various harsh environments.

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强场激光表面钝化显著降低不锈钢的腐蚀。

不锈钢是基本的耐腐蚀材料，但尽管经过了一个多世纪的努力，它们仍然不可避免地受到无处不在的化学反应的环境侵蚀，导致典型的腐蚀速率为数十μm∙yr-1。在这里，我们开发了一种强场激光钝化策略，通过形成具有独特的仿芋头叶状分层非均相卡西态微/纳米结构形态的混合μ m-Fe3O4/Fe2O3/Cr2O3钝化层来获得超级耐腐蚀不锈钢。我们观察到AISI 304钢在盐水、酸性和碱性溶液中的腐蚀速率降低了10万倍。超低腐蚀速率可保持6500h。在相同的条件下，AISI 316、420、201、430和2205钢的抗腐蚀能力得到了极大的提高。该研究揭示了在各种恶劣环境下实现不锈钢超耐腐蚀性能的新策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Light-Science & Applications 数理科学, 物理学I, 光学, 凝聚态物性 II ：电子结构、电学、磁学和光学性质, 无机非金属材料, 无机非金属类光电信息与功能材料, 工程与材料, 信息科学, 光学和光电子学, 光学和光电子材料, 非线性光学与量子光学

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发文量

803

审稿时长

2.1 months