材料科学
固溶强化
固溶体
微观结构
断裂韧性
硬化(计算)
复合材料
缩进
烧结
复合数
陶瓷
热压
锆
冶金
图层(电子)
作者
Sijia Huo,Yujin Wang,Qingyi Kong,Lei Chen,Mianyi Yao,Hui Gu,Jia‐Hu Ouyang,Yudong Fu,Yu Zhou
摘要
Abstract (Ti,Zr)B 2 ‐ (Zr,Ti)C ceramics were synthesized by reactive hot‐pressing and solid solution coupling effect using ZrB 2 and TiC powders as starting materials. Effects of sintering temperature on phase relations, microstructure and mechanical properties were reported. The equimolar ZrB 2 and TiC reactants ensured a complete in situ reaction to form (Ti,Zr)B 2 and (Zr,Ti)C solid solutions. The (Ti,Zr)B 2 ‐ (Zr,Ti)C composite sintered at 1750°C was fully densified, and exhibited a high hardness of 29.1 GPa due to fine‐grain hardening and solid solution hardening. The optimized comprehensive mechanical properties such as a hardness of 27.9 GPa, a strength of 705 MPa and an indentation fracture toughness of 5.3 MPa m 1/2 were achieved in (Ti,Zr)B 2 ‐ (Zr,Ti)C composites sintered at 1800°C for 1 hour.
科研通智能强力驱动
Strongly Powered by AbleSci AI