Electrochemical behavior and corrosion response of AISI 316-SIC composite fabricated by powder metallurgy

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2025-09-08 DOI:10.1007/s10853-025-11262-1

Aida M. Echavarría, A. L. Cardenas, D. L. Blanco-Estupiñán, F. J. Bolivar

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Abstract

In this study, the relationship between the microstructure and the electrochemical behavior and corrosion resistance of AISI 316 stainless steel reinforced with 2, 4, 6, and 8% vol of silicon carbide (SiC) particles, developed using the powder metallurgy technique, was evaluated. It was found that ceramic particles favor the results of the sintering process, once the porosity decreases and the densification of the material increases; however, a 2% vol. SiC content is not sufficient for a significant decrease in porosity, and above 6% vol. SiC increased porosity due to a greater number of interfaces. Diffraction patterns revealed the coexistence of the γ-austenite and SiC phases to composite formation. The results from the electrochemical impedance (EIS) and potentiodynamic polarization (PP) tests showed a higher capacitive arc for SS-SiC 4% sample with a real impedance of 6.10E + 02 Ohm.cm², higher polarization resistance with a value of 5.80E + 03 V, and corrosion potential (− 0.492 V), indicating an increase in the electrochemical and corrosion resistance properties with respect to AISI 316 steel unreinforced.

Graphical abstract

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粉末冶金制备AISI 316-SIC复合材料的电化学行为及腐蚀响应

研究了采用粉末冶金技术制备的含有2、4、6、8%体积碳化硅颗粒的AISI 316不锈钢的微观组织与电化学行为和耐蚀性之间的关系。结果表明，陶瓷颗粒有利于烧结过程的结果，一旦孔隙率降低，材料的致密性增加；然而，2%的SiC含量不足以显著降低孔隙度，当SiC含量超过6%时，由于界面数量增加，孔隙度增加。衍射图显示复合材料形成过程中γ-奥氏体和SiC相共存。电化学阻抗（EIS）和动电位极化（PP）测试结果表明，SS-SiC 4%样品具有较高的电容弧，实际阻抗为6.10E + 02 Ohm。极化电阻为5.80E + 03 V，腐蚀电位为- 0.492 V，电化学性能和耐腐蚀性能均较未增强的AISI 316钢有所提高。图形抽象

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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.