Sintering of tantalum-, tungsten-, and tungsten carbide (WC)-base materials was investigated utilizing field assisted sintering technology (FAST). The results show that close to pore-free dense sintered products can be obtained at a relatively low temperature without the aid of additives. Limited grain growth was observed in binderless WC but significant grain growth occurred in tantalum and tungsten. WC was beneficial as a sintering additive in tantalum and tungsten; it lowered the sintering temperature, reduced the sintered grain ! size, and increasing hardness. WC-base materials sintered by FAST exhibited a lower sintering temperature and higher hardness compared with counterpart materials sintered by conventional methods. Bimodal WC-Co materials were also developed by FAST and showed superior mechanical properties.
|Original language||English (US)|
|Number of pages||8|
|Journal||International Journal of Powder Metallurgy (Princeton, New Jersey)|
|State||Published - Sep 1 2011|
All Science Journal Classification (ASJC) codes
- Metals and Alloys
- Industrial and Manufacturing Engineering