研究了Ti 11Cr ,Ti 13Cr和Ti 15Cr合金 6 0 0℃及 80 0℃高温氧化行为。研究结果表明 ,相同温度下 ,Cr含量越高 ,氧化增重越小。相同合金 ,温度愈高 ,氧化增重愈大。随着温度升高 ,Cr含量对氧化速度的影响显著增大。随着Cr含量升高 ,氧化膜的晶粒尺寸减小 ,粘附性和抗开裂剥落性增加。并讨论了Cr含量对Ti Cr合金高温氧化行为的影响机理 The oxidation behavior of Ti 11Cr, Ti 13Cr and Ti 15Cr alloys at 600 ℃ and 80 ℃ was studied. The results show that at the same temperature, the higher the Cr content, the smaller the weight gain. The same alloy, the higher the temperature, the greater the weight gain. As the temperature increases, the effect of Cr content on the oxidation rate increases significantly. As the Cr content increases, the grain size of the oxide film decreases, and the adhesion and cracking resistance increase. The effects of Cr content on the oxidation behavior of Ti-Cr alloy at high temperature were also discussed