Tribocorrosion studies on DLC films with silver nanoparticles for prosthesis applications

IF 2 3区材料科学 Q2 ENGINEERING, MECHANICAL

Surface Topography: Metrology and Properties Pub Date : 2024-03-21 DOI:10.1088/2051-672x/ad2ebe

P A Radi, L Vieira, P Leite, V J Trava-Airoldi, M Massi, D A P Reis

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Abstract

Metals and their alloys are very important for orthopedic applications, and the basic requirements for a successful implant are chemical stability, mechanical behavior, and biocompatibility in body fluids and tissues. For prosthesis applications, the corrosion resistance of metals is one of the major prerequisites to avoid impairment of the material properties due to degradation. The combined action of corrosion and wear on the material is called tribocorrosion and DLC (Diamond-Like Carbon) films have been extensively studied to increase prosthesis biocompatibility and to protect from corrosion. Additionally, DLC coatings can prevent the prosthesis to release toxic elements due to plastic deformation and corrosion. This paper is about tribocorrosion studies on DLC and DLC-Ag (DLC containing silver nanoparticles) on Ti-6Al-4V substrates. These films were obtained by PECVD (Plasma Enhanced Chemical Vapor Deposition) using hexane as a precursor. The tribocorrosion behavior of uncoated and coated samples was investigated in the reciprocating mode in Ringer’s lactate solution. From the polarization test results, the protective efficiency of the film was calculated. Silver nanoparticles improved the corrosion resistance of the films. The protective efficiency was 15 and 19% for DLC and DLC-Ag films, respectively.

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含银纳米颗粒的 DLC 薄膜在假体应用中的摩擦磨损研究

金属及其合金对整形外科应用非常重要，成功植入的基本要求是化学稳定性、机械性能以及在体液和组织中的生物相容性。在假体应用中，金属的耐腐蚀性是避免材料性能因降解而受损的主要先决条件之一。腐蚀和磨损对材料的综合作用被称为摩擦腐蚀，DLC（类金刚石碳）薄膜在提高假体生物相容性和防止腐蚀方面得到了广泛的研究。此外，DLC 涂层还能防止假体因塑性变形和腐蚀而释放出有毒元素。本文是关于在 Ti-6Al-4V 基底上的 DLC 和 DLC-Ag（含银纳米颗粒的 DLC）摩擦腐蚀研究。这些薄膜是以正己烷为前驱体，通过 PECVD（等离子体增强化学气相沉积）获得的。在林格乳酸盐溶液中以往复模式研究了未涂层和涂层样品的摩擦腐蚀行为。根据极化测试结果，计算出了薄膜的保护效率。银纳米粒子提高了薄膜的耐腐蚀性。DLC 和 DLC-Ag 薄膜的保护效率分别为 15% 和 19%。

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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来源期刊

Surface Topography: Metrology and Properties Materials Science-Materials Chemistry

CiteScore

4.10

自引率

22.20%

发文量

183

期刊介绍： An international forum for academics, industrialists and engineers to publish the latest research in surface topography measurement and characterisation, instrumentation development and the properties of surfaces.