Titanium alloy surface thermal-control wear-resistant coating and preparation method thereof

The invention discloses a titanium alloy surface thermal-control wear-resistant coating and a preparation method thereof. The preparation method comprises the steps that a titanium alloy is placed in electrolyte containing aluminate, and in the plasma electrolytic oxidation process, direct-current pulse current is utilized to enable a dielectric film on the surface of the titanium alloy to be broken down, so that plasma micro-arc discharge is generated, and the thermal-control wear-resistant coating on the surface of the titanium alloy grows in situ; and the thermal-control wear-resistant coating is prepared from 40 to 50 weight percent of aluminum titanate, 30 to 40 weight percent of titanium oxide and 10 to 30 weight percent of aluminum oxide. 本发明公开一种钛合金表面热控耐磨损涂层及其制备方法。所述制备方法包括：将钛合金置于包含铝酸盐的电解液中，在等离子体电解氧化过程中，利用直流脉冲电流使得钛合金表面介电膜被击穿从而产生等离子体微弧放电并原位生长钛合金表面热控耐磨损涂层；所述热控耐磨损涂层由40-50wt%的钛酸铝、30-40wt%的氧化钛和10-30wt%的氧化铝组成。