| Title |
Characteristic Studies on Electro-Discharge-Sintering of Ti5Si3 Powder Synthesized by Mechanical Alloying |
| Authors |
천연욱(Yeon Wuk Cheon); 조유정(Yu Jung Cho); 강태주(Tae Ju Kang); 김정열(Jung Yeul Kim); 박준식(Jun Sik Park); 변창섭(Chang Sup Byun); 이상호(Sang Ho Lee); 이원희(Won Hee Lee) |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
titanium-silicide; mechanical alloying; electro-discharge-sintering; vickers hardness; phase transformation |
| Abstract |
The consolidation of mechanical alloyed Ti5Si3 powder by electro-discharge-sintering has been investigated. A single pulse of 2.5 to 8.0 kJ/0.34 g was applied to each powder mixture using 300 and 450 μF capacitors. A bulk-like solid with Ti5Si3 phase has been successfully fabricated by the discharge with an input energy of more than 2.5 kJ in less than 160 μsec. Micro-Vickers hardness was found to be higher than 1350, which is significantly higher than that of a conventional high temperature sintered sample. The formation of Ti5Si3 and consolidation occurred through a fast solid state diffusion reaction. |