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通过由等离子体氮化和钒基沉积组成的双相处理优化AISI 409不锈钢的表面性能。

Optimizing Surface Properties of AISI 409 Stainless Steel through Duplex Treatment Consisting of Plasma Nitriding and Vanadium-Based Deposition.

作者信息

Soares Do Monte E Silva André Felipe, de Almeida Larissa Solano, Almeida Silva Leandro, Rossino Luciana Sgarbi, Sousa Nunes Maelson, Santana Libório Maxwell, Costa Thércio Henrique de Carvalho, Bandeira Rafael Marinho, Magalhães de Sousa Rômulo Ribeiro

机构信息

Postgraduate Program in Materials Science and Engineering, Federal University of Piauí, Teresina, PI 64049-550, Brazil.

Postgraduate Program in Materials Science, Federal University of São Carlos, São Carlos, SP 13565-905, Brazil.

出版信息

ACS Omega. 2025 Jul 16;10(29):31440-31451. doi: 10.1021/acsomega.5c00885. eCollection 2025 Jul 29.

DOI:10.1021/acsomega.5c00885
PMID:40757311
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12311651/
Abstract

This study proposes a surface modification methodology for AISI 409 stainless steel by combining cathodic cage plasma nitriding (CCPN) and deposition (CCPD), evaluating the benefits of this duplex treatment over individual treatments. The mechanical strength, tribological behavior, and corrosion resistance of the treated surfaces were investigated in relation to processing parameters and resulting microstructures. Analyses were performed using XRD, SEM, Vickers microhardness, ball-on-disc testing, and corrosion testing in a 3.5% NaCl solution. The duplex treatment at 400 and 450 °C, consisting of CCPN followed by CCPD, promoted significant surface modifications. Nitriding resulted in a thick layer of FeN, FeN, and CrN, increasing hardness and wear resistance, with final improvements of 5.7 and 33.5 times, respectively. The subsequent VN deposition enhanced corrosion resistance, shifting the potential from -396 mV to -221 mV, indicating reduced electrochemical activity. These results confirm the treatment's potential for automotive exhaust systems, requiring lightweight, durable materials in aggressive environments.

摘要

本研究提出了一种通过结合阴极笼式等离子体渗氮（CCPN）和沉积（CCPD）对AISI 409不锈钢进行表面改性的方法，评估这种双重处理相对于单独处理的优势。研究了处理后表面的机械强度、摩擦学行为和耐腐蚀性与工艺参数及所得微观结构的关系。使用X射线衍射（XRD）、扫描电子显微镜（SEM）、维氏显微硬度测试、球盘试验以及在3.5%氯化钠溶液中的腐蚀试验进行分析。在400和450°C下进行的由CCPN接着CCPD组成的双重处理促进了显著的表面改性。渗氮形成了一层厚厚的FeN、Fe₂N和CrN，提高了硬度和耐磨性，最终分别提高了5.7倍和33.5倍。随后的VN沉积增强了耐腐蚀性，使电位从-396 mV变为-221 mV，表明电化学活性降低。这些结果证实了该处理方法在汽车排气系统中的应用潜力，汽车排气系统在恶劣环境中需要轻质、耐用的材料。

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本文引用的文献

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Effect of Alloying Elements and Low Temperature Plasma Nitriding on Corrosion Resistance of Stainless Steel.合金元素及低温等离子体渗氮对不锈钢耐蚀性的影响
Materials (Basel). 2022 Sep 22;15(19):6575. doi: 10.3390/ma15196575.
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PBF-EB of Fe-Cr-V Alloy for Wear Applications.用于耐磨应用的铁铬钒合金的粉末床熔融电子束增材制造
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