本发明公开了一种用含Si化合物提高钛和钛合金抗氧化性能的方法，属于钛合金材料领域。本发明通过既简单又高效的工艺方法将多级硅化物复合入钛材表面，借助机械压入法、压入‑激光熔合法和电刷镀法将多级硅化物SiC、Si₃W₅、Si₂W、Ti₅Si₃、Al₄SiC₄、MoSi₂、NbSi₂、Si₃N₄、BaO₃Si、Ca₂O₄Si、CrSi₂、FeSi₂和CaSi₂中的至少一种复合入钛材表面，形成纳米级SiO₂和纳米/微米级TiO₂混合的致密氧化层，显著提高钛材的高温抗氧化性能，所述钛材在650℃‑850℃空气中保温100小时，氧化速率不超过未经任何处理的工业纯钛或钛合金的12.6％‑59.5％。 

 The invention discloses a method for improving oxidation resistance of titanium and titanium alloy by means of a Si-containing compound, and belongs to the field of titanium alloy materials. Through asimple and efficient technique, multistage silicide is compounded on the surface of a titanium material, wherein at least one of the multistage silicide SiC, Si3W5, Si2W, Ti5Si3, Al4SiC4, MoSi2, NbSi2, NbSi2, Si3N4, BaO3Si, Ca2O4Si, CrSi2, FeSi2 and CaSi2 is compounded on the surface of the titanium material with the assistance of a mechanical pressing method, a pressing-laser fusion method and abrushing electroplating method to form a compact oxidation layer mixed by nano-sized SiO2 and nano-sized/micro-sized TiO2. In this way, the high temperature oxidation resistance of the titanium material is significantly improved, and when the titanium material is subjected to heat preservation for 100 hours in air at 650-850 DEG C, the oxidation rate of the titanium and titanium alloy does not exceed 12.6-59.5% of that of commercial pure titanium or titanium alloy without any treatment.