Ti(C,N)基金属陶瓷显微组织的研究

THE MICROSTRUCTURE OF Ti(C,N) BASED CERMETS

用粉末冶金方法制备了Ｔｉ（Ｃ，Ｎ）基金属陶瓷，其硬度、抗弯强度和断裂韧性分别可达ＨＲａ９１．２ ，１ ２５０ ＭＰａ 和１３ ．４ＭＰａ·ｍ １２ ，ＴＥＭ 研究表明，陶瓷相／ 金属相、陶瓷相／ 陶瓷相界面分别存在一定的取向关系，揭示了液相在烧结后的凝固过程．

The Ti(C,N) based cermets are fabricated by means of powder metallurgy method and its mechanical properties, i. e. hardness, bending strength and fracture toughness are HR a91.2, 1 250 MPa and 13.4 MPa·m 1/2 respectively. TEM examination has shown that there are some orientation relations between the interfaces of ceramics/metals and ceramics/ceramics respectively. The above work reveals the solidification process of metals after liquid sintering.