Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7886220 | Ceramics International | 2018 | 26 Pages |
Abstract
A novel method, namely flash spark plasma sintering (FSPS), combining flash sintering and electric field assisted sintering, was utilized to densify boron carbide/titanium diboride (B4C/TiB2) composites. Further, sintering homogeneity of the composites with different contents of TiB2 was systematically investigated and theoretical model was built. Results indicated that addition of 50â¯wt% TiB2 led to the densification of B4C/TiB2 composite by up to 97.7% with regional range 1.9% at 1872â¯Â°C under pressure of 4â¯MPa in 60â¯s. The preferential pathway of TiB2 network proves to disperse the central current and distribute thermal flow throughout the specimen possibly via tunneling, electronic field emission effect at first stage and lower-resistance composite pathway latter, contributing to the increased homogeneity.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Jiawei Wu, Bo Niu, Fan Zhang, Liwen Lei, Jinyong Zhang, Lin Ren, Weimin Wang, Zhengyi Fu,