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Modified SiC whisker toughened alumina self-healing ceramic and preparation method thereof
The invention provides modified SiC whisker toughened aluminum oxide self-healing ceramic and a preparation method thereof. The self-healing ceramic is prepared from aluminum oxide powder, a healing agent, a sintering aid, modified SiC whiskers and nano CaF2 with a sheet structure according to the mass ratio of (10 to 50): (1 to 5): (1 to 10): (1 to 5): (1 to 5). According to the modified SiC whisker toughened aluminum oxide self-healing ceramic disclosed by the invention, the toughening effect of the modified SiC whisker on a ceramic material is remarkable, and the interface bonding strength of the whisker and a matrix material is enhanced by adding nano CaF2 particles with a sheet structure, so that the effects of refining crystal grains and increasing compactness are achieved; the modified SiC whiskers and the nano-coated particles have a synergistic toughening effect on the material, and enable the ceramic material product to have excellent mechanical properties.
本发明提供了一种改性SiC晶须增韧氧化铝自愈合陶瓷及其制备方法，所述的自愈合陶瓷包括质量比为10‑50：1‑5：1‑10：1‑5：1‑5的氧化铝粉体、愈合剂、烧结助剂、改性SiC晶须与具有片状结构的纳米CaF2。本发明所述的改性SiC晶须增韧氧化铝自愈合陶瓷采用改性SiC晶须对陶瓷材料的增韧效果显著，具有片状结构的纳米CaF2颗粒的添加增强了晶须与基体材料的界面结合强度，起到细化晶粒、增加致密性的作用，改性SiC晶须和纳米包覆颗粒对材料起到了协同增韧的效果，并使陶瓷材料产品具有优异的力学性能。
Modified SiC whisker toughened alumina self-healing ceramic and preparation method thereof
The invention provides modified SiC whisker toughened aluminum oxide self-healing ceramic and a preparation method thereof. The self-healing ceramic is prepared from aluminum oxide powder, a healing agent, a sintering aid, modified SiC whiskers and nano CaF2 with a sheet structure according to the mass ratio of (10 to 50): (1 to 5): (1 to 10): (1 to 5): (1 to 5). According to the modified SiC whisker toughened aluminum oxide self-healing ceramic disclosed by the invention, the toughening effect of the modified SiC whisker on a ceramic material is remarkable, and the interface bonding strength of the whisker and a matrix material is enhanced by adding nano CaF2 particles with a sheet structure, so that the effects of refining crystal grains and increasing compactness are achieved; the modified SiC whiskers and the nano-coated particles have a synergistic toughening effect on the material, and enable the ceramic material product to have excellent mechanical properties.
本发明提供了一种改性SiC晶须增韧氧化铝自愈合陶瓷及其制备方法，所述的自愈合陶瓷包括质量比为10‑50：1‑5：1‑10：1‑5：1‑5的氧化铝粉体、愈合剂、烧结助剂、改性SiC晶须与具有片状结构的纳米CaF2。本发明所述的改性SiC晶须增韧氧化铝自愈合陶瓷采用改性SiC晶须对陶瓷材料的增韧效果显著，具有片状结构的纳米CaF2颗粒的添加增强了晶须与基体材料的界面结合强度，起到细化晶粒、增加致密性的作用，改性SiC晶须和纳米包覆颗粒对材料起到了协同增韧的效果，并使陶瓷材料产品具有优异的力学性能。
Modified SiC whisker toughened alumina self-healing ceramic and preparation method thereof
一种改性SiC晶须增韧氧化铝自愈合陶瓷及其制备方法
AI JIN (Autor:in) / HAN YU (Autor:in) / XIAN BAOJUN (Autor:in) / WU YUYI (Autor:in) / CUI XIFENG (Autor:in) / MA YONGSHUAI (Autor:in) / YU ZONGZHI (Autor:in)
14.04.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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