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利用面接触流体润滑光干涉测量装置,对BSA水溶液的润滑和吸附特性进行了试验研究.试验中润滑接触副由静止的钢块和旋转的玻璃盘组成,结果表明润滑膜厚度随速度的增加而增加,随载荷的增加而减小.BSA在钢滑块表面形成两种类型的吸附,一为连续的薄膜层,二为离散的蛋白质凝聚团簇.同时证实了钢块表面微观腐蚀的发生,并由入口区向出口区扩展,该腐蚀促进吸附膜的增长.吸附层的形成受润滑膜剪应变率和压力的影响,高的剪应变率和低的载荷有利于吸附膜的增长.
The lubricating and adhering properties of BSA aqueous solution were studied by means of surface contact fluid lubrication optical interferometer.The results showed that the lubrication film thickness increased with the increase of velocity BSA formed two types of adsorption on the surface of steel slide, one continuous thin film layer and two discrete agglomerates of protein.At the same time, micro-corrosion of steel surface was confirmed, The corrosion rate increases the adsorption film growth.The formation of adsorption layer is affected by the shear strain rate and pressure of the lubricant film, and high shear strain rate and low load are conducive to the growth of the adsorption film.