Densification,microstructure and mechanical properties of hot pressed tantalum carbide |
| |
| Affiliation: | 1. School of Material Science and Engineering, Xi''an University of Technology, 5 Jinhua Road, Xi''an 710048, PR China;2. Shaanxi Key Laboratory of Nano Materials and Technology, Xi''an 710048, PR China;3. Institute of Strength Physics and Materials Science, Russian Academy of Sciences, Siberian Branch, Tomsk 634021, Russia |
| |
| Abstract: | Monolithic tantalum carbide (TaC) ceramics were prepared by hot pressing in order to investigate the effect of hot pressing temperature on the densification behavior, microstructure and mechanical properties of TaC. Monolithic TaC sample hot pressed at 2000 °C for 45 min under 40 MPa, with relative density value above 97%, Vickers hardness of 15.7 GPa and fracture toughness of 4.1 MPa m1/2 was obtained. Fracture surfaces investigations of the samples, which were carried out using the SEM analysis, showed a significant grain growth by increasing the hot pressing temperature from 1700 to 2000 °C. Also, based on the X-ray diffraction pattern, a decrease in the lattice parameter of hot pressed TaC sample was observed. |
| |
| Keywords: | Tantalum carbide (TaC) Hot pressing Densification Hardness Fracture toughness |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
