The composition of the material is Ti-6Al-4V, which belongs to (a + b) titanium alloy and has good comprehensive mechanical and mechanical properties. Bigger than strength. The strength of TC4 sb = 1.012MPa, density g = 4.4 * 103, specific strength sb / g = 23.5, and the specific strength sb / g of alloy steel is less than 18. Titanium alloy has low thermal conductivity.

The thermal conductivity of titanium alloy is 1/5 of iron and 1/10 of aluminum. The thermal conductivity of TC4 is l = 7.955W / m · K.

Coefficient of linear expansion = 7.89 * 10-6 ℃, specific heat = 0.612cal / g · ℃. Titanium alloy has a low modulus of elasticity. The elastic modulus of TC4, E = 110GPa, is about 1/2 of steel, so it is easy to deform during processing of titanium alloy.

TC4 (Ti-6Al-4V) and TA7 (Ti-5Al-2.5Sn) titanium alloys are surface modified by two implantation schemes. Tests have shown that after ion implantation of titanium alloys, the microhardness is improved and significantly reduced The sliding friction coefficient is effectively improved, and the wear resistance is effectively improved. In order to prove the modification mechanism, X-ray photoelectron spectroscopy (XPS) analysis was performed on the injected and non-injected samples, and satisfactory results were obtained. TC4 titanium alloy has excellent A series of advantages, such as corrosion resistance, small density, high specific strength, good toughness and weldability, have been successfully applied in aerospace, petrochemical, shipbuilding, automobile, mold, medicine and other departments.