Reactive Hot Pressing of ZrC–SiC Ceramics at Low Temperature. Issue 1 (10th December 2012)

• Record Type: Journal Article
• Authors: Wang, Xin‐Gang; Zhang, Guo‐Jun; Xue, Jia‐Xiang; Tang, Yun; Huang, Xiao; Xu, Chang‐Ming; Wang, Pei‐Ling; Hilmas, G.
• Is Part Of: Journal of the American Ceramic Society. Volume 96:Issue 1(2013)
• Page Start: 32
• Page End: 36
• Publication Date: 2012-12-10
• Subjects: Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.12090
• Languages: English
• ISSNs: 0002-7820

Abstract

<abstract abstract-type="main" id="jace12090-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Composites of ZrC–SiC with relative densities in excess of 98% were prepared by reactive hot pressing of ZrC and Si at temperature as low as 1600°C. The reaction between ZrC and Si resulted in the formation of ZrC_{1−<italic>x</italic>}, SiC, and ZrSi. Low‐temperature densification of ZrC−SiC ceramics is attributed to the formed nonstoichiometric ZrC_{1−<italic>x</italic>} and Zr–Si liquid phase. Adding 5 wt% Si to ZrC, the three‐point bending strength of formed ZrC_0.8–13.4 vol%SiC ceramics reached 819 ± 102 MPa with hardness and toughness being 20.5 GPa and 3.3 MPa·m^1/2, respectively.</p> </abstract>