期刊
CERAMICS INTERNATIONAL
卷 44, 期 15, 页码 17655-17659出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2018.06.227
关键词
Cermet; Binder; Core-Rim; Hardness; Microstructure; Toughness
In this research, solid-solution powder of (Ti0.93W0.07)C was synthesized by high-energy ball mill method followed by carbothermal reduction process. Subsequently, the acquired powder was blended with Ni/Co and Mo2C secondary carbide, and sintered under the optimized temperature (1510 degrees C) for 1 h to produce the modulated cermets. A typical core-rim structure formation with solid-solution phases was confirmed by backscattered electrons studies using a Field Emission electron scanning microscope. The hardness of the synthesized cermets was enhanced by increasing the specific amount of Mo2C. The acquired results demonstrate that the binder type has a prominent influence on the microstructure and hardness of the prepared cermets. The hardness of (Ti0.93W0.07)C-xMo(2)C-Ni cermet increased similar to 9%, when nickel was partially substituted by cobalt.
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