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Basic Bio-Tribological Performance of Insulating Si3N4-Based Ceramic as Human Body Replacement Joints

机译：基于Si3N4陶瓷作为人体更换关节的基本生物学性能

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The paper presents an in-depth study of the bio-tribological performance on silicon nitride matrix ceramic composites containing hexagonal boron nitride (hBN) with different content. Ultra-high molecular weight polyethylene (UHMWPE) under simulated body fluid lubrication, and the simulated body fluid-lubricated sliding tests were performed on a universal friction and wear tester. The results showed that the incorporation of hBN into silicon nitride matrix reduced the friction coefficients from 0.27 for Si3N4/UHMWPE pair to 0.16 for Si3N4-20%hBN/UHMWPE with full immersion in simulated body fluid lubrication. Scanning electron microscopy (SEM), laser scanning microscope, X-ray photoelectron spectroscopy (XPS) were utilized to characterize the wear surface. The analysis results indicated that, with simulated body fluid lubrication, the interfacial between hBN and Si3N4 facilitated the wear pits to form on the wear surface, and the residual wear particles deposited in the pits. Then, tribochemical products were formed on the wear surface, which protected and smoothed the wear surface of the sliding pair in the simulated body fluid.
机译：本文介绍了含有不同含量的六边形氮化硼（HBN）的氮化硅基质陶瓷复合材料的生物摩擦学性能的深入研究。在模拟体液润滑下进行超高分子量聚乙烯（UHMWPE），并在通用摩擦和磨损测试仪上进行模拟体液润滑的滑动试验。结果表明，对于Si3N4-20％HBN / UHMWPE，将HBN掺入氮化硅基质中，将0.27的摩擦系数从0.27掺入0.16，以浸入模拟体液润滑中的全浸泡。扫描电子显微镜（SEM），激光扫描显微镜，X射线光电子能谱（XPS）用于表征磨损表面。分析结果表明，利用模拟体液润滑，HBN和Si3N4之间的界面促进了磨损坑，在磨损表面上形成耐磨坑，并且沉积在凹坑中的残余磨损颗粒。然后，在磨损表面上形成摩擦制品，其在模拟体液中保护和平滑滑动对的磨损表面。

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