Improved Corrosion Resistance of 316L SS by Duplex Coating Consisting of a Cerium-Based Layer and a Stearic Acid Film

IF 2.2 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Engineering and Performance Pub Date : 2024-09-16 DOI:10.1007/s11665-024-10044-1

A. P. Loperena, N. Cortes, L. I. Brugnoni, I. L. Lehr, M. B. González

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Abstract

In this study, a multifunctional composite coating for 316L SS was developed. The main objectives were to improve the corrosion resistance of the substrate in simulated physiological fluids and to impart antibacterial properties to the material. Cerium salicylate-based coatings were produced by electrodeposition and further modified with silver nanoparticles. A hydrophobic duplex coating was formed by post-treatment with stearic acid, significantly improving the corrosion resistance of the substrate in Ringer’s solution. Antibacterial tests of the duplex coating against Escherichia coli and Staphylococcus aureus showed a considerable inhibition zone for both bacteria. The proposed duplex coating not only increases the corrosion resistance of the substrate, but also inhibits bacterial growth and exhibits impressive hydrophobic properties. Consequently, this study could represent a significant advance in developing coatings for 316L SS that offer excellent long-term corrosion resistance, antibacterial activity, and hydrophobic properties for stent applications.

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由铈基层和硬脂酸膜组成的双相涂层提高了 316L SS 的耐腐蚀性能

本研究为 316L 不锈钢开发了一种多功能复合涂层。主要目的是提高基材在模拟生理液体中的耐腐蚀性，并赋予材料抗菌特性。水杨酸铈涂层是通过电沉积法生产的，并进一步用纳米银粒子进行了修饰。通过硬脂酸后处理形成了疏水性双层涂层，显著提高了基底在林格氏溶液中的耐腐蚀性。双层涂层对大肠杆菌和金黄色葡萄球菌的抗菌测试表明，这两种细菌都有相当大的抑制区。所提出的双层涂层不仅能提高基底的耐腐蚀性，还能抑制细菌生长，并表现出令人印象深刻的疏水特性。因此，这项研究是为 316L SS 开发涂层的重大进展，这种涂层具有出色的长期耐腐蚀性、抗菌活性和疏水特性，适用于支架应用。

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来源期刊

Journal of Materials Engineering and Performance 工程技术-材料科学：综合

CiteScore

3.90

自引率

13.00%

发文量

1120

审稿时长

4.9 months

期刊介绍： ASM International''s Journal of Materials Engineering and Performance focuses on solving day-to-day engineering challenges, particularly those involving components for larger systems. The journal presents a clear understanding of relationships between materials selection, processing, applications and performance. The Journal of Materials Engineering covers all aspects of materials selection, design, processing, characterization and evaluation, including how to improve materials properties through processes and process control of casting, forming, heat treating, surface modification and coating, and fabrication. Testing and characterization (including mechanical and physical tests, NDE, metallography, failure analysis, corrosion resistance, chemical analysis, surface characterization, and microanalysis of surfaces, features and fractures), and industrial performance measurement are also covered