Surface chemistry and microstructure of metallic biomaterials for hip and knee endoprostheses
Surface chemistry and microstructure of metallic biomaterials for hip and knee endoprostheses
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DOI：
10.1016/j.apsusc.2017.08.007
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发表时间：
2018-01-01
影响因子：
6.7
通讯作者：
Dolinar, Drago
中科院分区：
文献类型：
--
作者：
Jenko, Monika;Gorensek, Matevz;Dolinar, Drago
使用 SEM（形态学）、EBSD（相分析）、AES 和 XPS（表面化学）确定用于髋关节和膝关节假体的钛合金（新的和旧的）和 CoCrMo 合金的表面化学和微观结构。研究了两种新的和两种使用过的内置假体。 SEM SE 和 BE 图像显示了它们的微观结构，而 EBSD 则提供了材料的相。在髋关节和膝关节内置假体的生产过程中，这些材料要经过严格的热机械处理和物理化学过程，这对 CoCrMo 合金至关重要。 AES 和 XPS 结果表明，(a) Ti6Al4V 上的薄氧化膜主要是 TiO2 与少量 Al2O3 的混合物，而 V 已耗尽，(b) Ti6Al7Nb 主要是 TiO2 与少量 Al2O3 的混合物， Nb2O5，和(c)CoCrMo合金主要是Cr2O3与少量Co和Mo氧化物的混合物。CoCrMo合金上的薄氧化膜应防止晶间腐蚀并提高生物相容性。钛合金上的薄氧化膜可防止进一步腐蚀，提高生物相容性，并影响骨整合。 (C) 2017 年作者。由 Elsevier B.V. 出版
The surface chemistry and microstructures of titanium alloys (both new and used) and CoCrMo alloys used for hip and knee endoprostheses were determined using SEM (morphology), EBSD (phase analysis), AES and XPS (surface chemistry). Two new and two used endoprostheses were studied. The SEM SE and BE images showed their microstructures, while the EBSD provided the phases of the materials. During the production of the hip and knee endoprostheses, these materials are subject to severe thermomechanical treatments and physicochemical processes that are decisive for CoCrMo alloys.The AES and XPS results showed that thin oxide films on (a) Ti6Al4V are primarily a mixture of TiO2 with a small amount of Al2O3, while the V is depleted, (b) Ti6Al7Nb is primarily a mixture of TiO2 with a small amount of Al2O3 and Nb2O5, and (c) the CoCrMo alloy is primarily a mixture of Cr2O3 with small amounts of Co and Mo oxides.The thin oxide film on the CoCrMo alloy should prevent intergranular corrosion and improve the biocompatibility. The thin oxide films on the Ti alloys prevent further corrosion, improve the biocompatibility, and affect the osseointegration. (C) 2017 The Authors. Published by Elsevier B.V.