| Title |
Fabrication and Mechanical Properties of Nanostructured TiC-TiAl by the Pulsed Current Activated Sintering |
| Authors |
곽봉원(Bong-won Kwak); 김병수(Byung-su Kim); 윤진국(Jin-kook Yoon); 홍경태(Kyung-tae Hong); 손인진(In-jin Shon) |
| DOI |
https://doi.org/10.3365/KJMM.2016.54.8.566 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
composites; nanomaterials; sintering; hardness; fracture toughness |
| Abstract |
TiC-Co or TiC-Ni hard materials have been used for cutting tools. However, the high cost and the low hardness of Ni or Co, and the low corrosion resistance of the TiC-Ni and TiC-Co cermets have generated interest in recent years in using them as alternative binder phases. In this study, TiAl was used as a novel binder and consolidated by the pulsed current activated sintering(PCAS) method. Nanopowders of TiC and TiAl were fabricated using high energy ball milling. Highly dense TiC-TiAl hard materials with a relative density of up to 99.5% were sintered within three min by PCAS. Not only the hardness but also the fracture toughness of the TiC-10 vol%TiAl were better than those of TiC-10 vol%Ni or TiC-10 vol%Co. (Received December 14, 2015; Accepted March 20, 2016) |