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http://dx.doi.org/10.4150/KPMI.2006.13.1.010

Formation of a Core/Rim Structure in Ti(C, N)-based Cermets  

Kim, Suk-Hwan (School of Advanced Materials and System Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of Powder Materials / v.13, no.1, 2006 , pp. 10-17 More about this Journal
Abstract
Model experiment was introduced to obtain the formation of a core/rim structure by only liquid phase reaction in Ti(C, N)-based cermet alloys. Infiltrated Ti(C, N)-Ni, $MO_2C-Ni$, and TaC-Ni cermets were bonded to sandwiched specimen by heat treatment $1450^{\circ}C$ for 5hr. With nitrogen addition, both (Ti, Mo) (C, N) and (Ti, Ta) (C, N) rim structure was nucleated around comer of cuboidal Ti(C, N) core. However, equilibrium shapes of(Ti, Mo) (C, N) and (Ti, Ta) (C, N) rim were different possibly due to the effect of interface energy. The core/rim and rim! binder interfaces were parallel to each other with TaC addition, while rotated to each other with $MO_2C$ addition.
Keywords
Cermets; Ti(C, N); TaC; Core/Rim Structure;
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