【摘要】 采用SEM、EPMA和SIMS研究了不同退火工艺对Cu-1.0Al合金高温氧化速率的影响。结果表明,CuAl合金在氢气氛下退火后,表面生成了Al2O3氧化膜,合金抗氧化能力得到明显提高。退火温度及冷却速率对合金的高温抗氧化能力有很大的影响;退火温度越高,冷却速率越慢,形成的Al2O3氧化膜越致密并且与基体结合的越好,合金的抗氧化能力越好。其中,CuAl合金在900℃以0.6℃/min冷却退火后合金的抗氧化能力最好。更多还原

【Abstract】 Effects of annealing treatment on oxidation rate of Cu-1.0Al alloy at high temperature were investigated by SEM,EPMA and SIMS.The results reveal that the oxidation resistance of the alloy at high temperature is greatly strengthened as a result of the creation of Al₂O₃ film in the surface with annealing at H2 atmosphere,which is improved obviously due to forming more sound Al₂O₃ film and more strenghened bonding with the matrix with increasing annealing temperature and decreasing the cooling rate.The desirable oxidation resistance of alloy can be presented with annealing at 900 ℃ and cooling at 0.6 K/min.更多还原