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Microstructure and mechanical properties of TiB2-40 wt% TiC composites: Effects of adding a low-temperature hold prior to sintering at high temperatures.
- Source :
-
Ceramics International . Dec2018, Vol. 44 Issue 18, p23297-23300. 4p. - Publication Year :
- 2018
-
Abstract
- Abstract TiB 2 –40 wt% TiC composites were prepared by pressureless sintering. Prior to the conventional heating at 2000 °C for 1 h for final densification, addition of a low temperature hold at 1500 °C for 4 h was found effective in densification of the composite, refining the microstructure and promoting the anisotropic growth of TiB 2 grains. The TiB 2 -TiC composite prepared by two-step sintering had better mechanical properties with flexural strength of 776 MPa and fracture toughness of 7.43 MPa m1/2, in comparison with the values of 419 MPa and 4.81 MPa m1/2 for composite by conventional one-step sintering. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 44
- Issue :
- 18
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 132690160
- Full Text :
- https://doi.org/10.1016/j.ceramint.2018.09.048