Bionic hexagonal textures with different area densities were processed on the surface of 40Cr steel by laser processing technology.Friction and wear tests were carried out on high temperature tribometer under oil lubrication conditions.The influence in variation of rotational speed and load on the tribological properties of bionic hexagonal texture with different area density was studied.The wear morphology of the specimen surface was analyzed by means of metallurgical microscope.The results show that the friction coefficient of surface textured specimens is lower than that of un-textured specimens,decreases first and then increases with the increase of texture density.The friction coefficient of the specimen with texture density of 10％is 9.8％lower than that of the untextured surface.Wear resistance is improved.The friction coefficient of low density textured specimens increases first and then decreases with the increase of load,and the friction coefficient of high density decreases with the increase of load.The friction coefficient of the specimen decreases with the increase of speed.Under the condition of oil lubrication,the bionic hexagonal texture can effectively improve the friction and wear properties of the friction pair surface,and the reasonable texture area density can maximize the friction reduction effect of the bionic texture.
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