Preparation of Ultrafine Ti(C,N) Based Cermet Constructed by a#946;-Co and Research on Its Toughening Mechanism

Abstract

Abstract. Ti(C,N) based cermet material which composed by hard phase and binder phase, has excellent performance, is the best choice for manufacturing industry and military product etc.. However, it's application areas has been limited due to the shortcoming of toughness of hard phase, and a study in this area has important scientific theoretical value and practical significance. The project intends to design a new high tough Ti(C,N) based cermet material through the face-centred cubic cobalt β-Co building reinforced cermet structure and starts a systematic research on the binder phase mechanism. This study base on the toughening mechanism of ultrafine β-Co in cermet materials, the ultra-fine mix-powders 50Ti(C,N)-15WC-10Mo2C-8TaC-17Co were used as basic ingredients, using high-energy ball milling, spray drying, low pressure sintering technology, Ti(C,N) based cermet of excellent performance was successfully prepared. IntroductionWith the rapid development of the aerospace, military, energy and other modern industry, has put forward higher requirements to the manufacturing and processing technology. Ti (C, N) based cermets material having a low density, high hardness, high wear resistance, etc., is the best choice for modern tool materials [1]. Cermet is a composite material of hard phase and binder phase structure. Wherein the hard phase is of brittleness, lacks toughness. Therefore, the cermet toughening has become one of the main directions of today's cermet material studies.