【摘要】 对热等静压方法制备的（Ｎｂ，Ｔｉ）Ｃ－３５Ｎｉ金属陶瓷的高温抗弯强度进行了研究。采用ＸＲＤ，ＳＥＭ及ＴＥＭ等方法对该金属陶瓷的显微结构作了分析。结果表明，在氧化气氛中，温度为７００℃时该金属陶瓷的抗弯强度就明显下降，温度为１０００℃时其抗弯强度约只有室温时的２０％。更多还原

【Abstract】 The flexural strength of （Nb, Ti）C-35Ni cermet at high temperature produced by hot-isostatic-pressing was measured.Test results show that the flexural strength of the cermet as a function of temperature decreases obviously at 700℃ and the higher the temperature,the more rapidly the flexural strength decreases. The flexural strength of the cermet at 1000℃ is only 20% of that at room temperature. The cermet will be oxi-dized as TiO₂,NiO and NiTiO₃ in an oxidizing environment at high temperature. The oxidation strongly affects the flexural strength at relatively high temperatures（about 700℃）, thus limiting the potential operating tempera-ture range for the cermet.更多还原