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Abstract

Ultrafine TiC_1-X and Ti(C,N) powders 100-200 nm in size were synthesised through mechanical alloying for cutting tool applications. Elemental titanium and carbon were processed by a high energy planetary mill in air, argon and nitrogen atmosphere. With variations in the Ti/C ratios, the characteristics of synthesised powders were investigated. Of three atmospheres, argon was effective in synthesising pure TiC_1-X powders. However, the presence of oxygen seemed to interfere with carbon and nitrogen diffusion into TiC lattice. Nitrogen exhibited a stronger affinity with titanium than carbon in forming the Ti(C,N) phase. This study shows the parameters used to determine the final compositions of synthesised TiC_1-X and Ti(C_1-XN_X).

Keywords

ULTRAFINE POWDERS TIC1-x TI(C,N)PLANETARY MILL

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Synthesis of ultrafine TiC 1–X and Ti(CN) powders via planetary milling

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