Effect of nitrogen plasma-based ion implantation on joint prosthetic material
Effect of nitrogen plasma-based ion implantation on joint prosthetic material
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DOI：
10.1016/s0257-8972(02)00094-4
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发表时间：
2002-07-01
影响因子：
5.4
通讯作者：
Murakami, A
中科院分区：
文献类型：
--
作者：
Ikeda, D;Ogawa, M;Murakami, A
在全髋关节置换术（THA）中，关节面产生的超高分子量聚乙烯（UHMWPE）磨屑已被认为是导致人工髋关节因骨质溶解而松动和失效的长期原因。离子注入技术已被用于提高金属股骨头的耐磨性。等离子体离子注入（PBII）技术由于具有三维离子注入效应，更适合于股骨头、股骨假体等形状复杂的植入物。通过销盘磨损试验，研究了脉冲电压和基体冷却对钴铬基材料PBII工艺耐磨性的影响。高氮离子注入剂量的Co-Cr合金的耐磨性比未注入剂量的Co-Cr合金有上级的提高。用阳极极化法测定了它们的耐蚀性。高剂量和冷却的PBII工艺被证明是有效的，以提高钴铬合金的耐腐蚀性。在这项研究中，它被证实，改善的耐磨性和耐腐蚀性的钴铬合金改性的PBII，以及高脉冲电压和冷却的基板PBII是最有效的处理。(C)2002 Elsevier Science B. V.保留所有权利。
In total hip arthroplasty (THA), Ultra High Molecular Weight Polyethylene (UHMWPE) wear debris generated at the articular surface has been recognized as a long-term cause of loosening and failure of artificial hip joints due to osteolysis. The technique of ion implantation has been used to improve wear resistance of the metal femoral head. The Plasma-Based Ion Implantation (PBII) technique is more suitable for complex shaped implants such as femoral head and femoral prosthesis due to three-dimensional ion implantation effects. The effect of pulse voltage and cooling of the substrate of the PBII process for Co-Cr-based materials were examined in terms of wear resistance by the pin-on-disc wear test. The wear resistance of Co-Cr alloy with high nitrogen-ion implantation dose was superior to the untreated Co-Cr alloy. Their corrosion resistance has also been examined with an anodic polarization measurement. High dose and cooling of PBII process proved to be effective in enhancing corrosion resistance of Co-Cr alloy. In this study, it was confirmed that the improvement of wear and corrosion resistance of Co-Cr alloy modified by PBII, as well as high pulse voltage and cooling of the substrate for PBII were the most effective treatments. (C) 2002 Elsevier Science B.V. All rights reserved.