High toughness TiB2–Al2O3composite ceramics produced by reactive hot pressing with fusible components

Yu. Popov, A; Sivak, AA; Yu. Borodianska, H; Shabalin, IL

Abstract

A manufacturing method of high toughness TiB2–Al2O3 ceramic composites by reactive hot pressing via exothermic reactions with Al, B2O3, C and TiB2 has been developed. The usage of fusible initial components (Al and B2O3) in the hot pressing procedure allowed forming dense ceramics with homogeneous fine structure at 1900°C and 20 MPa (after 8 min exposure) without any grinding of the initial powders. The hot pressed TiB2–Al2O3 composites exhibit the fracture toughness of 9 MPa m1/2, which is much higher than that of both single phase TiB2 (6 MPa m1/2) and Al2O3 (4 MPa m1/2) ceramics.

Citation

Yu. Popov, A., Sivak, A., Yu. Borodianska, H., & Shabalin, I. (2015). High toughness TiB2–Al2O3composite ceramics produced by reactive hot pressing with fusible components. Advances in applied ceramics, 114(3), 178-182. https://doi.org/10.1179/1743676114Y.0000000202

• Journal Article Type: Article
• Publication Date: Jan 1, 2015
• Deposit Date: Oct 26, 2016
• Journal: Advances in Applied Ceramics
• Print ISSN: 1743-6753
• Publisher: Taylor and Francis
• Volume: 114
• Issue: 3
• Pages: 178-182
• DOI: https://doi.org/10.1179/1743676114Y.0000000202
• Publisher URL: http://dx.doi.org/10.1179/1743676114Y.0000000202
• Related Public URLs: http://www.tandfonline.com/toc/yaac20/current