Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5440495 | Journal of the European Ceramic Society | 2017 | 5 Pages |
Abstract
Zirconium carbide (ZrC0.84O0.13) nanopowders were consolidated using plasma activated sintering with 0-8 wt% ZrH2 as the sintering additive to improve the sinterability. Compared with pure ZrC sintering, ZrH2 additive led to the higher sintering kinetics and lower sintering temperature. This improvement was attributed to the increased carbon-vacancy concentration in the non-stoichiometric ZrC in the presence of ZrH2 additive during the sintering process. Fully dense and fine-grained ZrC ceramics (1.3 ± 0.2 μm) were achieved at 1650 °C with 6 wt.% ZrH2. The final product exhibited the Vicker's hardness of 21.2 ± 1.0 GPa and fracture toughness of 2.2 ± 0.3 MPa m1/2.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Mingyu Xiang, Jingjing Xie, Wei Ji, Hang Ping, Weimin Wang, Hao Wang, Jinyong Zhan, Yan Xiong, Zhengyi Fu,