Research Progress on Microstructure and Mechanical Properties of(Ti,M)(C,N)-based Cermets
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摘要: (Ti, M) (C, N) 基金属陶瓷是重要的刀具及涂层材料。综述了国内外 (Ti, M) (C, N) 基金属陶瓷显微组织和力学性能的研究进展, 对 (Ti, M) (C, N) 基金属陶瓷的黑芯—白内环—灰外环和白芯—灰环显微组织结构特征进行了阐述。系统综述了TiC/TiN含量、Co、Ni粘结相含量、Mo、WC、VC、Cr3C2、TaC、NbC添加剂成分对 (Ti, M) (C, N) 基金属陶瓷显微组织和力学性能的影响, 并指出接下来的深入研究方向。结果表明: (Ti, M) (C, N) 基金属陶瓷显微组织中芯—环相结构的形成受到原始粉体粒度的影响, 当碳化物原始粉体为微米级时形成黑芯—白内环—灰外环结构;当碳化物原始粉体尺寸为亚微米及纳米时形成白芯—灰环结构。金属和陶瓷性能优势的结合依赖于显微组织的调控。多组元添加剂制备的复式 (Ti, M) (C, N) 基金属陶瓷显微组织中环相和芯相界面能的匹配、硬质相晶粒尺寸分布及取向分布等机理研究有待进一步深入。Abstract: (Ti,M)(C,N)-based cermets are important tools and coating materials.The domestic and abroad research progress of microstructure and mechanical properties of (Ti,M)(C,N)-based cermets was reviewed,and the characteristics of black core-white inner ring-gray outer ring and white core-grey ring microstructure in(Ti,M) (C,N)-based cermets were elaborated. The effects of TiC/TiN content,Co,Ni binder phase content,Mo,WC,VC,Cr3C2,TaC and NbC additives on the microstructure and mechanical properties of(Ti,M)(C,N)-based cermets were introduced. The next research directions was also pointed out.
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Key words:
- (Ti,M) (C,N) based cermets /
- microstructure /
- mechanical properties /
- TiC/TiN /
- binder phase /
- additives
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