Piotrowska Katarzyna, Madej Monika, Ozimina Dariusz
Department of Mechatronics and Mechanical Engineering, Kielce University of Technology, al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland.
Materials (Basel). 2021 Sep 24;14(19):5525. doi: 10.3390/ma14195525.
Clinical trials conducted in many centres worldwide indicate that, despite advances made in the use of biomaterials for medical applications, tribocorrosive wear remains a significant issue. The release of wear residue into body fluids can cause inflammation and, as a result, implant failure. Surface modification is one of the methods used to improve the mechanical, tribological, and fatigue properties of biomaterials. In this article, the authors investigated the impact of ion implantation on improving the functional properties of implant surfaces. This paper presents morphology, geometric surface structure, hardness, and tribological test results for layers obtained by ion implantation with nitrogen and oxygen ions on alloy 316L. The surface morphology and thickness of the implanted layer were examined using scanning microscopy. Atomic force microscopy was used to evaluate the geometric structure of the surface. Instrumented indentation was used to measure nanohardness. Model tribo tests were carried out for reciprocating motion under conditions of dry friction and lubricated friction with Ringer's solution. The tribological tests showed that the implanted samples had a lower wear than the reference samples. Nitrogen ion implantation increased the hardness of 316L steel by about 45% and increased it by about 15% when oxygen ions were used.
在全球多个中心进行的临床试验表明，尽管在将生物材料用于医学应用方面取得了进展，但摩擦腐蚀磨损仍然是一个重大问题。磨损残渣释放到体液中会引发炎症，进而导致植入物失效。表面改性是用于改善生物材料机械、摩擦学和疲劳性能的方法之一。在本文中，作者研究了离子注入对改善植入物表面功能特性的影响。本文展示了通过氮离子和氧离子注入316L合金所获得的层的形态、几何表面结构、硬度和摩擦学测试结果。使用扫描显微镜检查植入层的表面形态和厚度。原子力显微镜用于评估表面的几何结构。仪器化压痕用于测量纳米硬度。在干摩擦和用林格氏溶液润滑摩擦的条件下，对往复运动进行了模拟摩擦试验。摩擦学测试表明，植入样品的磨损低于参考样品。氮离子注入使316L钢的硬度提高了约45%，使用氧离子时硬度提高了约15%。
