| Title |
Properties and Rapid Sintering of Nanostructured WC and WC-TiAl by the High Frequency Induction Heating |
| Authors |
곽봉원(Bong-won Kwak); 오승진(Seung-jin Oh); 김병수(Byung-su Kim); 윤진국(Jin-kook Yoon); 손인진(In-jin Shon) |
| DOI |
https://doi.org/10.3365/KJMM.2016.54.3.180 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
composites; nanostructured materials; sintering; mechanical properties |
| Abstract |
In the case of cemented WC, Ni or Co is added as a binder for the formation of composite structures. However, the high cost and the low hardness of Ni or Co, and the low corrosion resistance of the WC-Ni and WC-Co cermets have generated interest in alternative binder phases recently. In this study, TiAl was used as a novel binder and consolidated by the high frequency induction heated sintering (HFIHS) method. Nanopowders of WC and TiAl were made by high energy ball milling. Highly dense WC and WC-10 vol% TiAl with a relative density of up to 99 % were obtained within one min by HFIHS under a pressure of 80 MPa. The addition of TiAl to WC enhanced the toughness without great decrease of hardness due to the crack deflection and nanostructured phase. |