Abstract
The sintering of hBN-TiN-TiB2 composite was performed by spark plasma sintering (SPS) at 2173 K under the pressure of 100 MPa for 300 s. TiB2 formation was observed in hBN-TiN-TiB2 composite containing 50 vol%hBN. With increasing hBN content from 10 to 90 vol%, the apparent densities decrease from 4.8 to 2.6 Mg m-3. The sintering mechanism in this ternary system was mainly occurred by the densification of TiN and TiB2, while the in-situ TiB2 formation has been also beneficial to the densification.
