Inverse core-rim microstructure in (Ti,Ta)(C,N)-based cermets developed by a mechanically induced self-sustaining reaction

被引：53

作者：

Chicardi, E. ^{[1
]}

Cordoba, J. M. ^{[1
]}

Sayagues, M. J. ^{[1
]}

Gotor, F. J. ^{[1
]}

机构：

[1] CSIC US, ICMS, Seville 41092, Spain

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2012年 / 31卷

关键词：

Mechanochemistry; Combustion synthesis; Cermet; Inverse core-rim; Carbonitride; ULTRAFINE (TI; POWDERS; TOOLS; PHASE; WC; CARBIDES; MO;

D O I：

10.1016/j.ijrmhm.2011.09.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cermets with a nominal composition (Tia(0.8)Ta(0.2)C(0.5)N(0.5)-20 wt.% Co) were synthesised by a mechanically induced self-sustaining reaction (MSR) process from stoichiometric elemental powder blends. The MSR allowed the production of a complex (Ti,Ta)(C,N) solid solution, which was the raw material used for the sintering process. The pressureless sintering process was performed at temperatures between 1400 degrees C and 1600 degrees C in an inert atmosphere. The microstructural characterisation showed a complex microstructure composed of a ceramic phase with an unusual inverse core-rim structure and a Ti-Ta-Co intermetallic phase that acted as the binder. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：39 / 46

页数：8

共 38 条

[1] Spark plasma sintering of Ti(C,N) cermets with intermetallic binder phases [J].