Open AccessFabrication and dynamic compressive response of reaction sintering H-BN ceramic
Author(s) -
Xiaogang Gao,
Meng Yong Sun,
Wei Huang,
M. Y. Zhang,
Yiquan Wu,
W. Zhang,
Wang Ch
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1507/3/032046
Subject(s) - materials science , ceramic , sintering , composite material , deformation (meteorology) , strain rate , compressive strength , strain (injury) , split hopkinson pressure bar , bar (unit) , stress (linguistics) , medicine , linguistics , philosophy , physics , meteorology
Hexagonal boron nitride ceramic (h-BN) based on the nitridation of B powders was obtained by reaction sintering method. The dynamic compressive response was investigated using a Split Hopkinson pressure bar tester at high strain rates in a range of 0.8×10 3 −1.6×10 3 s −1 . By increasing the strain rate, the dynamic strength and the failure strain increased continuously. The compressive stress–strain curves exhibited universal three deformation regions, including inelastic deformation region, rapid loading region and failure region. The failure mode of the h-BN ceramic depended upon the strain rate.