Ti(C,N)基金属陶瓷在烧结-热等静压条件下的组织、性能研究

STUDY OF Ti(C,N)-BASED CERMETS MANUFACTURED BY SINTER-HIP

用真空烧结和烧结 -热等静压两种方法制备了不同粘结相含量的 Ti(C,N)基金属陶瓷 ,并对合金的组织和性能进行了对比分析。结果表明 :与真空烧结相比 ,烧结 -热等静压有效降低了合金的孔隙度 ,因而使合金的横向断裂强度有较大幅度的提高 ,硬度也稍有提高 ;对于本试验所采用的 Ti(C,N)基金属陶瓷 ,烧结 -热等静压处理温度为142 0～ 145 0℃时 ,合金可获得好的组织、性能。本文还对烧结 -热等静压能有效改善 Ti(C,N)基金属陶瓷组织、性能的原因进行了探讨。

Ti(C,N) cermts with different amount of nickel were produced by vacuum sintering and sinter-HIP technologies.The structure and properties of cermets were tested.The results showed that the cermets manufactured by sinter-HIP are free of porosity and the properties are also greatly ameliorated.For the cermets in this experimental,approprate sinter-HIP temperature is about 1420～1450℃.Reasons for ameliorating the structrue and propertise are also discussed.