振荡热压烧结ZrB2-SiC陶瓷的力学性能
Mechanical Properties of ZrB2-SiC Ceramics Sintered by Hot Oscillatory Pressing
李冰 1赵科 1刘佃光 1刘金铃1
作者信息
摘要
采用振荡热压烧结(HOP)和热压烧结(HP)工艺制备了ZrB2-SiC陶瓷,研究了振荡压力对ZrB2-SiC陶瓷致密化及力学性能的影响.结果表明,与采用HP工艺制备ZrB2-SiC陶瓷相比,HOP工艺的致密化速率有显著提升;ZrB2 与SiC两相界面结合良好;HOP工艺制备的ZS30 样品的硬度和断裂韧性分别达到了 21.1 GPa和 7.3 MPa·m1/2,较采用HP工艺在相同烧结参数下制备的试样有大幅提升.HOP在制备高性能ZrB2-SiC陶瓷方面展现出良好发展前景.
Abstract
ZrB2-SiC ceramics were prepared using hot oscillatory pressing(HOP)and hot pressing(HP)processes,and the effect of oscillatory pressure on the densification and mechanical properties of ZrB2-SiC ceramics was investigated.The results have shown that compared to using the HP process to fabricate ZrB2-SiC ceramics,the densification rate of HOP process has been improved significantly,and the interface between ZrB2 and SiC is well bonded;The hardness and fracture toughness of the ZS30 sample prepared by the HOP process reached 21.1 GPa and 7.3 MPa·m1/2,respectively,which were significantly improved compared to the samples prepared by the HP process under the same sintering parameters.HOP has shown good development prospects in the preparation of high-performance ZrB2-SiC ceramics.
关键词
超高温陶瓷(UHTCs)/ZrB2/烧结/致密化/力学性能Key words
Ultra-high temperature ceramics(UHTCs)/ZrB2/Sintering/Densification/Mechanical properties引用本文复制引用
出版年
2024
NETL
NSTL
万方数据