A Review of the Effects of Composite Solid Lubricants and Biomimetic Textures on High Nitinol Alloys
High nickel titanium base alloy(TiNi)has the advantages of low density,high strength,corrosion resistance and high temperature resistance.Consequently,it finds extensive application in the aerospace,aviation,and mechanism.Due to the defects of TiNi,such as large friction coefficient and poor wear resistance,it is urgent to improve the tribological properties of TiNi and extend the service life of TiNi parts.In this paper,the effects of solid lubricant and bionic surface texture on the tribological properties of TiNi were investigated,and the process of form-ing lubrication film and the friction damage mechanism of the friction surface were analyzed.Because the surface texture stores a large amount of solid lubricant,the contact area between the friction ball and the substrate surface is reduced,which is conducive to improving the anti-friction and anti-wear performance of the substrate.In addi-tion,under the combined action of cyclic stress and friction heat,the plastic property of the solid lubricant is im-proved and the bionic texture is extruded,which migrates and spreads with the friction ball to the friction surface,thus promoting the formation of the lubrication film and contributing to the improvement of the anti-friction and an-ti-wear properties.
high TiNi alloycomposite solid lubricantbionic texturetribological property
万方数据
维普
