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Spindle-shaped aggregate toughened boron carbide ceramic and preparation method thereof
The invention discloses fusiform aggregate toughened boron carbide ceramic and a preparation method thereof, and belongs to the technical field of boron carbide ceramic toughening, and the fusiform TiB2-SiC aggregate toughened B4C ceramic with a unique structure is finally obtained by introducing prepared modified silicon carbide whiskers (SiCw-T) into boron carbide (B4C) ceramic. The thermal stability of SiCw and SiCw-T at the temperature of 1600-1800 DEG C under the vacuum condition is studied, the forming mechanism, microstructure, mechanical property and toughening mechanism of fusiform TiB2-SiC aggregate serving as a toughening phase are studied, and the thermal stress of a system is simulated. According to the invention, the fusiform TiB2-SiC aggregate with two interlocked crystal grains can be successfully synthesized through the in-situ reaction of the B4C and the Ti3SiC2 coating in the ceramic.
本发明公开了一种纺锤状团聚体增韧碳化硼陶瓷及其制备方法，属于碳化硼陶瓷增韧技术领域，通过将制备得到的改性碳化硅晶须(SiCw‑T)引入碳化硼(B4C)陶瓷，最终得到具有独特结构的纺锤状TiB2‑SiC团聚体强韧化B4C陶瓷。通过对SiCw和SiCw‑T在1600℃～1800℃，真空条件下的热稳定性研究以及对纺锤状TiB2‑SiC团聚体作为增韧相的形成机理、微观结构、力学性能和增韧机制的研究以及体系热应力模拟，可以得出在陶瓷内部通过B4C和Ti3SiC2涂层原位反应成功地合成了两种晶粒互锁的纺锤状TiB2‑SiC团聚体。
Spindle-shaped aggregate toughened boron carbide ceramic and preparation method thereof
The invention discloses fusiform aggregate toughened boron carbide ceramic and a preparation method thereof, and belongs to the technical field of boron carbide ceramic toughening, and the fusiform TiB2-SiC aggregate toughened B4C ceramic with a unique structure is finally obtained by introducing prepared modified silicon carbide whiskers (SiCw-T) into boron carbide (B4C) ceramic. The thermal stability of SiCw and SiCw-T at the temperature of 1600-1800 DEG C under the vacuum condition is studied, the forming mechanism, microstructure, mechanical property and toughening mechanism of fusiform TiB2-SiC aggregate serving as a toughening phase are studied, and the thermal stress of a system is simulated. According to the invention, the fusiform TiB2-SiC aggregate with two interlocked crystal grains can be successfully synthesized through the in-situ reaction of the B4C and the Ti3SiC2 coating in the ceramic.
本发明公开了一种纺锤状团聚体增韧碳化硼陶瓷及其制备方法，属于碳化硼陶瓷增韧技术领域，通过将制备得到的改性碳化硅晶须(SiCw‑T)引入碳化硼(B4C)陶瓷，最终得到具有独特结构的纺锤状TiB2‑SiC团聚体强韧化B4C陶瓷。通过对SiCw和SiCw‑T在1600℃～1800℃，真空条件下的热稳定性研究以及对纺锤状TiB2‑SiC团聚体作为增韧相的形成机理、微观结构、力学性能和增韧机制的研究以及体系热应力模拟，可以得出在陶瓷内部通过B4C和Ti3SiC2涂层原位反应成功地合成了两种晶粒互锁的纺锤状TiB2‑SiC团聚体。
Spindle-shaped aggregate toughened boron carbide ceramic and preparation method thereof
一种纺锤状团聚体增韧碳化硼陶瓷及其制备方法
ZHAO XIAOQING (author) / WANG BIN (author) / WANG QINGPING (author) / LIU ZHENYING (author)
2024-11-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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