Analysis of abnormal grain growth behavior during hot-press sintering of boron carbide. Issue 10 (July 2020)

• Record Type: Journal Article
• Authors: Zhang, Mei; Zhou, Zhihui; Yuan, Tiechui; Li, Ruidi; Zhang, Weishan; Zhang, Yingjie; Wang, Minbo; Xie, Siyao
• Is Part Of: Ceramics international. Volume 46:Issue 10(2020)Part B
• Page Start: 16345
• Page End: 16353
• Publication Date: 2020-07
• Subjects: Grain growth -- Hot-press sintering -- Boron carbide -- Twin -- Grain boundary; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.03.193
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Dense boron carbide bearings with a central through hole were fabricated by hot-press sintering. When the sintering temperature was above the critical grain growth temperature, an increase in the applied pressure at 2100 °C caused a distinct abnormal grain size region. Two grain growth mechanisms were explored; normal grain growth (NGG) is controlled by a grain boundary diffusion mechanism whereas the abnormal grain growth (AGG) pattern abides by the 'Bose–Einstein' grain growth law.