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Electrochemical Surface Treatment to Enhance Corrosion Resistance and Bioresistance of Medical-Grade Stainless Steels
Journal of Materials Engineering and Performance ( IF 2.3 ) Pub Date : 2020-09-08 , DOI: 10.1007/s11665-020-05095-z
A. A. Kityk , V. Pavlik , M. Boča , D. Pangallo , M. Kapustova , Y. Halahovets

The room-temperature eco-friendly electrochemical surface treatment of medical-grade stainless steels in ethaline, a eutectic mixture of choline chloride and ethylene glycol in a molar ratio of 1:2, is investigated in this work. High levels of brightness, smoothness and corrosion resistance of the surfaces of the stainless steels Mn AISI, AISI 316Ti, and AISI 304 can be achieved by using the technique of anodic treatment in ethaline. The surface smoothing of the steel samples due to the dissolution of defects and inhomogeneities, and the enrichment of the electropolished surfaces with chromium and nickel, resulted in increased corrosion resistance and bioresistance. The results of the experiments demonstrated that with anodic treatment in ethaline it is possible to decrease the amount of the Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, and Candida albicans microorganisms on the surfaces of the steel samples by a factor of up to 75. Thus, the deep eutectic solvent ethaline is a highly promising medium for significantly improving corrosion resistance and bioresistance of medical-grade stainless steels by anodic treatment.



中文翻译:

电化学表面处理可增强医用级不锈钢的耐腐蚀性和生物耐受性

在这项工作中,研究了在医用乙醇中的室温生态环保型电化学表面处理过程,该表面是氯化胆碱和乙二醇的共晶混合物,摩尔比为1:2。通过在乙胺中使用阳极处理技术,可以实现不锈钢Mn AISI,AISI 316Ti和AISI 304不锈钢表面的高亮度,光滑度和耐腐蚀性。由于缺陷和不均匀性的溶解,钢样品的表面光滑,以及铬和镍对电抛光表面的富集,提高了耐蚀性和生物抵抗力。实验结果表明,在乙胺中进行阳极处理可以减少金黄色葡萄球菌的数量大肠杆菌铜绿假单胞菌,和白色念珠菌的钢样的表面上的微生物通过了一个因子75.因此,共晶深溶剂ethaline为显著提高医学级不锈钢的耐腐蚀性和bioresistance一种大有希望的介质钢经阳极处理。

更新日期:2020-09-08
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