|
Vol.54, No.8, 566 ~ 573, 2016
|
| Title |
| Fabrication and Mechanical Properties of Nanostructured TiC-TiAl by the Pulsed Current Activated Sintering |
| 곽봉원 Bong-won Kwak , 김병수 Byung-su Kim , 윤진국 Jin-kook Yoon , 홍경태 Kyung-tae Hong , 손인진 In-jin Shon |
|
|
|
| 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) |
|
|
| Key Words |
| composites, nanomaterials, sintering, hardness, fracture toughness |
|
|
 |
|
