-A A +A
Type: 
Journal
Description: 
A tungsten carbide ceramic containing 5 vol% silicon carbide was hot pressed to full density at 1820 °C. A small amount of transient liquid phase based on W-C-Si-O facilitated oxide removal in the reducing environment and favoured the development of a bimodal microstructure containing sub-micrometric grains with square or rod-like morphologies. These microstructural features led to outstanding mechanical properties from room to elevated temperatures. For the first time, WC-materials were characterized up to 1500 °C exhibiting flexural strength over 1 GPa in the whole temperature range and fracture toughness from 7 to 15 MPa⋅√m.
Publisher: 
Elsevier
Publication date: 
1 Jun 2020
Authors: 

Laura Silvestroni, Nicola Gilli, Andrea Migliori, Diletta Sciti, Jeremy Watts, Greg E Hilmas, William G Fahrenholtz

Biblio References: 
Volume: 40 Issue: 6 Pages: 2287-2294
Origin: 
Journal of the European Ceramic Society