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首页> 外文期刊>Electrochemistry communications >Study of the tribocorrosion behaviors of albumin on a cobalt-based alloy using scanning Kelvin probe force microscopy and atomic force microscopy
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Study of the tribocorrosion behaviors of albumin on a cobalt-based alloy using scanning Kelvin probe force microscopy and atomic force microscopy

机译：扫描开尔文探针力显微镜和原子力显微镜研究白蛋白在钴基合金上的摩擦腐蚀行为

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摘要

Once biomaterials are implanted in patients, the first reaction that occurs on the surface is the adsorption of bio-molecules such as proteins, amino acids, etc. For load-bearing surfaces, some adsorbed proteins can be removed by relative motion (tribology) and some adsorbed proteins can be denatured due to tribochemical reactions. Although the effect of proteins on the corrosion behaviors of metals has been studied, the local reaction induced by the protein adsorption under tribological contact at the micro level is still unknown. The adsorption of bovine serum albumin (BSA) on CoCrMo alloy surfaces and the tribocorrosion behaviors were studied by AFM and SKPFM. The results showed that adsorbed BSA molecules could decrease the work function and promote the corrosion process for CoCrMo alloys. In the wear track, the albumin denatured, and changed the surface potential as time progressed. (C) 2016 Elsevier B.V. All rights reserved.
机译：一旦将生物材料植入患者体内，表面上发生的第一个反应就是吸附生物分子，例如蛋白质，氨基酸等。对于承重表面，可以通过相对运动（摩擦学）去除某些吸附的蛋白质，某些吸附的蛋白质可能由于摩擦化学反应而变性。尽管已经研究了蛋白质对金属腐蚀行为的影响，但是在微观接触下由摩擦作用下蛋白质吸附引起的局部反应仍是未知的。通过AFM和SKPFM研究了牛血清白蛋白（BSA）在CoCrMo合金表面的吸附和摩擦腐蚀行为。结果表明，吸附的BSA分子会降低CoCrMo合金的功函数并促进其腐蚀过程。在磨损过程中，白蛋白变性，并随着时间的流逝改变表面电位。 （C）2016 Elsevier B.V.保留所有权利。

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