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Tribocorrosion of different biomaterials under reciprocating sliding conditions in artificial saliva
Lubrication Science ( IF 1.9 ) Pub Date : 2019-08-29 , DOI: 10.1002/ls.1478
Luís Vilhena 1 , Gifty Oppong 1 , Amílcar Ramalho 1
Affiliation  

It has been found in recent studies that the main reason for the failure of a biomedical material used as an implant is due to the low resistance of the combined wear and corrosion. The aim of the present research study is to investigate the triboelectrochemical behaviour of different biomedical materials used as implants under different contact conditions. Comparative experiments were performed using commercial pure titanium (cP‐Ti), Ti6Al4V alloy, pure niobium (Nb), and a Co28Cr6Mo alloy sliding against a Zirconia counterbody tested in artificial saliva. The corrosion potential of the working electrode was monitorised using the open circuit potential technique, and potentiodynamic polarization curves were obtained. It was found that the Nb specimen showed a poor tribological performance, while the Co28Cr6Mo alloy showed the lowest friction and wear. The cP‐Ti specimen showed a more noble behaviour than that of the other three specimens with the highest corrosion potential value.

中文翻译:

往复滑动条件下人工唾液中不同生物材料的摩擦腐蚀

在最近的研究中发现,用作植入物的生物医学材料失败的主要原因是由于磨损和腐蚀的综合抵抗力低。本研究的目的是研究在不同接触条件下用作植入物的不同生物医学材料的摩擦电化学行为。使用市售的纯钛(cP-Ti),Ti6Al4V合金,纯铌(Nb)和Co28Cr6Mo合金在人造唾液中对氧化锆配体滑动的对比实验进行了比较。使用开路电势技术监测工作电极的腐蚀电势,并获得电位动力学极化曲线。发现Nb样品的摩擦学性能较差,而Co28Cr6Mo合金的摩擦和磨损最小。cP-Ti试样比其他三个具有最高腐蚀电位值的试样表现出更高的行为。
更新日期:2019-08-29
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