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首页> 外文期刊>International Journal of Electrochemical Science >Electrochemical Study of a Laser Marked Biomaterial in Albumin Solution
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Electrochemical Study of a Laser Marked Biomaterial in Albumin Solution

机译：白蛋白溶液中激光标记生物材料的电化学研究

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Proteins are widely used in solutions in order to simulate the physiological fluids and study corrosionmechanisms. The present work appraised the ASTM F 139 austenitic stainless steel (SS), employed inprostheses manufacture, and engraved by a nanosecond laser beam, using a phosphate bufferedsolution with 10 g/L of bovine serum albumin (PBS + BSA). Due to the complexity of the interactionbetween protein and the biomaterial, it was necessary to use higher BSA concentrations, however,similar to those found in human serum. The electrochemical tests consisted in monitoring the opencircuit potential (OCP), electrochemical impedance spectroscopy (EIS) and cyclic polarisationmeasurements. The results showed that the laser marked areas are more susceptible to corrosion;suggesting that the laser marking technique has a more preponderant effect on the passive filmprotective character than the albumin addition to the electrolyte.
机译：蛋白质广泛用于溶液中，以模拟生理液并研究腐蚀机理。本工作评估了ASTM F 139奥氏体不锈钢（SS），采用假体制造，并使用磷酸盐缓冲溶液和10 g / L牛血清白蛋白（PBS + BSA）进行纳秒激光雕刻。由于蛋白质与生物材料之间相互作用的复杂性，因此有必要使用更高的牛血清白蛋白浓度，与人血清中发现的浓度相似。电化学测试包括监测开路电势（OCP），电化学阻抗谱（EIS）和循环极化测量。结果表明，激光刻印区域更容易受到腐蚀;建议激光刻印技术对钝化膜的保护特性的影响要比除电解质外的白蛋白要强。

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