Construction of a tribocorrosion test apparatus for the hip joint: Validation, test methodology and analysis
Construction of a tribocorrosion test apparatus for the hip joint: Validation, test methodology and analysis
复制标题
DOI：
10.1016/j.wear.2011.01.085
复制
发表时间：
2011-07-29
期刊：
影响因子：
5
通讯作者：
Wimmer, M. A.
中科院分区：
文献类型：
--
作者：
Mathew, M. T.;Uth, T.;Wimmer, M. A.
在生物医学研究中，由于运动环境和承重表面相互作用中腐蚀的关键性质，科学家和工程师对“摩擦腐蚀”领域表现出越来越大的兴趣。从根本上说，摩擦腐蚀结合了摩擦学和腐蚀学科以及它们的并行交换。摩擦腐蚀的原理应用于一系列行业，包括海洋、空间和生物医学（例如牙科和整形外科）行业。摩擦腐蚀研究的挑战之一是缺乏标准的测试设备和方法，特别是在生物医学应用中。许多研究人员和研究实验室都致力于改进现有的经典摩擦学装置，无论是商用的还是定制的摩擦计，以整合电化学监测，目前的工作重点是开发一种摩擦腐蚀测试装置，以模拟人工髋关节的接触情况，特别注意在这样一个系统中可能出现的错误问题。该测试系统有助于研究植入物金属或涂层的摩擦腐蚀行为，作为不同摩擦学和电化学参数的函数，并允许在测试期间监测温度、pH值和溶解氧水平。对HC CoCrMo合金在小牛血清（BCS）中的初步结果表明，所提出的系统是可靠的，并用于研究植入材料的摩擦腐蚀行为。电化学阻抗谱测试（EIS）之前和之后的滑动测试。这种测试在了解表面化学和腐蚀动力学的变化的有用性进行了解释，最佳的EIS模型的帮助下。还试图强调磨损量化方法的相关性，并分析骨科和牙科生物医学摩擦系统的磨损和腐蚀的协同作用的可能方法。(C)2011 Elsevier B.V.保留所有权利。
In biomedical research, because of the critical nature of corrosion within the environment of motion and interactions of weight bearing surfaces, scientists and engineers have shown a growing interest in the area of "tribocorrosion". Fundamentally, tribocorrosion combines the disciplines of tribology and corrosion and their concurrent exchanges. Principles of tribocorrosion are applied in a range of industries including the offshore, space and biomedical (for example, dental and orthopedic) industries.One of the challenges in tribocorrosion research is the lack of standard testing equipment and methodologies, particularly in its bio-medical applications. Many investigators and research laboratories are engaged in modifying their existing classical tribology apparatus, whether they are commercially available or customized tribometers, to integrate electrochemical monitoring.The current work is focused on developing a tribocorrosion test apparatus to model the contact situation of artificial hip joints with particular attention on possible erroneous issues that could arise in such a system. The test system facilitates studies on the tribocorrosion behavior of implant metals or coatings as a function of diverse tribological and electrochemical parameters, and allows monitoring temperature, pH and dissolved oxygen level during testing. Initial results on the HC CoCrMo alloy in bovine calf serum (BCS), indicate that the proposed system is reliable and useful for the investigation of tribocorrosion behavior of implant materials. Electrochemical impedance spectroscopy tests (EIS) are employed before and after the sliding tests. The usefulness of such tests in understanding the changes in the surface chemistry and corrosion kinetics are explained, with the help of optimum EIS models. An attempt has also been made to highlight the relevance on wear quantification methods and possible ways to analyse the synergistic interactions of wear and corrosion for the biomedical tribosystems in orthopedics and dentistry. (C) 2011 Elsevier B.V. All rights reserved.