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Zirconium oxide composite ceramic
The invention provides a zirconium oxide composite ceramic, the composite ceramic comprises 5-30 wt% of pentachlorochromium triboride, 5-15 wt% of Ce-TZP and the balance of Y-TZP, the thermal expansion coefficient of pentachlorochromium triboride is about 13.7 * 10 <-6 >/DEG C, the thermal expansion coefficient of tetragonal phase zirconium oxide ceramic is about 10.5 * 10 <-6 >/DEG C, and in the sintering and cooling process of the composite ceramic formed by the pentachlorochromium triboride and the tetragonal phase zirconium oxide ceramic, the thermal expansion coefficient of the Ce-TZP is about 13.7 * 10 <-6 >/DEG C; when the tetragonal phase zirconia ceramic is subjected to a hydrothermal environment, the pentachromium triboride crystal is subjected to a tensile stress, the tetragonal phase zirconia ceramic is subjected to a compressive stress, the aging phase change of the tetragonal phase zirconia ceramic in the hydrothermal environment can be well inhibited, meanwhile, the hardness of the pentachromium triboride is high, and the surface hardness of the formed composite ceramic is superior to that of the pure tetragonal phase zirconia ceramic. The zirconium oxide ceramic has good surface hardness and fracture toughness, and the application range of the zirconium oxide ceramic is obviously expanded.
本发明提供了一种氧化锆复合陶瓷，所述复合陶瓷由5~30wt%三硼化五铬、5~15wt%Ce‑TZP和余量的Y‑TZP组成，三硼化五铬的热膨胀系数大约为13.7×10‑6/℃，四方相氧化锆陶瓷的热膨胀系数大约为10.5×10‑6/℃，两者形成的复合陶瓷在烧结冷却过程中，三硼化五铬晶体受到拉应力，四方相氧化锆陶瓷受到压应力，能很好地抑制四方相氧化锆陶瓷在水热环境中的时效相变，同时，三硼化五铬的硬度高，所形成的复合陶瓷的表面硬度优于单纯的四方相氧化锆陶瓷，具有良好的表面硬度和断裂韧性，显著扩大了氧化锆陶瓷的应用范围。
Zirconium oxide composite ceramic
The invention provides a zirconium oxide composite ceramic, the composite ceramic comprises 5-30 wt% of pentachlorochromium triboride, 5-15 wt% of Ce-TZP and the balance of Y-TZP, the thermal expansion coefficient of pentachlorochromium triboride is about 13.7 * 10 <-6 >/DEG C, the thermal expansion coefficient of tetragonal phase zirconium oxide ceramic is about 10.5 * 10 <-6 >/DEG C, and in the sintering and cooling process of the composite ceramic formed by the pentachlorochromium triboride and the tetragonal phase zirconium oxide ceramic, the thermal expansion coefficient of the Ce-TZP is about 13.7 * 10 <-6 >/DEG C; when the tetragonal phase zirconia ceramic is subjected to a hydrothermal environment, the pentachromium triboride crystal is subjected to a tensile stress, the tetragonal phase zirconia ceramic is subjected to a compressive stress, the aging phase change of the tetragonal phase zirconia ceramic in the hydrothermal environment can be well inhibited, meanwhile, the hardness of the pentachromium triboride is high, and the surface hardness of the formed composite ceramic is superior to that of the pure tetragonal phase zirconia ceramic. The zirconium oxide ceramic has good surface hardness and fracture toughness, and the application range of the zirconium oxide ceramic is obviously expanded.
本发明提供了一种氧化锆复合陶瓷，所述复合陶瓷由5~30wt%三硼化五铬、5~15wt%Ce‑TZP和余量的Y‑TZP组成，三硼化五铬的热膨胀系数大约为13.7×10‑6/℃，四方相氧化锆陶瓷的热膨胀系数大约为10.5×10‑6/℃，两者形成的复合陶瓷在烧结冷却过程中，三硼化五铬晶体受到拉应力，四方相氧化锆陶瓷受到压应力，能很好地抑制四方相氧化锆陶瓷在水热环境中的时效相变，同时，三硼化五铬的硬度高，所形成的复合陶瓷的表面硬度优于单纯的四方相氧化锆陶瓷，具有良好的表面硬度和断裂韧性，显著扩大了氧化锆陶瓷的应用范围。
Zirconium oxide composite ceramic
一种氧化锆复合陶瓷
CAO XIAOGANG (author) / ZHANG LIN (author) / LI JIANQIANG (author)
2023-08-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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