Optimization of Antibacterial properties of 316 Austenitic Stainless Steel

Diffusion Foundations and Materials Applications Pub Date : 2024-06-11 DOI:10.4028/p-tqc5th

A. M. Wais, Abdul Raheem K. Abid Ali, A. H. Jasim, H. Majdi

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Abstract

In the present study, titanium dioxide (TiO2/Chitosan) nano-particles layer coatings were fabricated by electrophoretic deposition on 316 Austenitic Stainless steel substrate. Aims to enhance antibacterial properties by coating the surface with a bio ceramic (TiO2) nano-powders. TiO2, were made on 316 austenitic stainless steel substrate with an EPD (electrophoretic deposition) technique, charged particles suspended in ethanol at a concentration of 50 g/L, for each powder with ideal conditions of 20V and a deposition time of (2, 4 and 6 min). The surface tests of coated substrates, such as, micro-hardness, surface roughness and wettability antibacterial test were evaluated and compared to that of the uncoated substrates. The showed results the electrophoretic deposition is a favorable technique to make a bio coating on 316 Austenitic Stainless steel substrate with excellent properties and structure for applications biomedical. The results demonstrated that the coated sample under coating conditions (20V, 2min) which is close to the ratio found in living bone. the average micro-hardness of the TiO2 coated sample is 1483 HV compared with that of uncoated substrates is 460 HV. The results also of the wettability test showed that the contact angle of the deposited paint is 5.9 degrees, and this positive result is useful for biomedical applications and proved that the coating is hydrophilic.

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优化 316 奥氏体不锈钢的抗菌性能

本研究通过电泳沉积法在 316 奥氏体不锈钢基底上制作了二氧化钛（TiO2/壳聚糖）纳米颗粒层涂层。目的是通过在表面涂覆生物陶瓷（TiO2）纳米粉体来增强抗菌性能。采用 EPD（电泳沉积）技术在 316 奥氏体不锈钢基底上制造 TiO2，将带电粒子悬浮在浓度为 50 克/升的乙醇中，每种粉末的理想条件为 20V，沉积时间为（2、4 和 6 分钟）。对涂覆基底的表面测试（如微硬度、表面粗糙度和润湿抗菌测试）进行了评估，并与未涂覆基底的表面测试进行了比较。结果表明，电泳沉积是一种在 316 奥氏体不锈钢基底上制作生物涂层的有利技术，其优异的性能和结构适用于生物医学应用。结果表明，在涂覆条件下（20V，2 分钟），涂覆样品与活骨中的比例接近。TiO2 涂覆样品的平均微硬度为 1483 HV，而未涂覆基底的平均微硬度为 460 HV。润湿性测试结果还显示，沉积涂料的接触角为 5.9 度，这一积极结果有助于生物医学应用，并证明涂层具有亲水性。

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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Diffusion Foundations and Materials Applications

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