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Beta-Sialon-Al2O3-SiC composite ceramic material and preparation method thereof
The invention discloses a beta-Sialon-Al2O3-SiC composite ceramic material and a preparation method of the beta-Sialon-Al2O3-SiC composite ceramic material. The composite ceramic material is prepared from the following raw materials in percentage by mass: 33.65 to 45.7 percent of secondary aluminum ash, 21.86 to 30.7 percent of iron tailings, 4 to 6 percent of bentonite and 19.5 to 34.4 percent of dry quenching coke ash, and the mass ratio of Al2O3 to SiO2 is 1.35 to 1.7. The secondary aluminum ash, the iron tailings and the bentonite are used as raw materials, the cost is low, the process is simple, and the obtained beta-Sialon is stable in chemical property and good in high-temperature strength; meanwhile, by adding second phases (corundum and SiC), the hardness, strength, corrosion resistance and oxidation resistance of the beta-Sialon-based composite powder can be improved; and SiC and beta-Sialon are compounded, and the reinforcing and toughening effects are achieved through dispersion strengthening of second-phase particles.
本发明公开了一种β‑Sialon‑Al2O3‑SiC复合陶瓷材料及其制备方法，所述复合陶瓷材料的原料以质量百分比计包括如下组份：二次铝灰33.65‑45.7%，铁尾矿21.86‑30.7%，膨润土4‑6%，干熄焦灰19.5‑34.4%，且Al2O3与SiO2的质量比为1.35‑1.7。本发明以二次铝灰、铁尾矿和膨润土为原料，成本低廉，工艺简单，所获得的β‑Sialon化学性质稳定且高温强度良好；同时通过添加第二相（刚玉和SiC）能提高β‑Sialon基复合粉体的硬度、强度、耐蚀性和抗氧化性；并且SiC与β‑Sialon相复合，通过第二相颗粒弥散强化，达到增强增韧的作用。
Beta-Sialon-Al2O3-SiC composite ceramic material and preparation method thereof
The invention discloses a beta-Sialon-Al2O3-SiC composite ceramic material and a preparation method of the beta-Sialon-Al2O3-SiC composite ceramic material. The composite ceramic material is prepared from the following raw materials in percentage by mass: 33.65 to 45.7 percent of secondary aluminum ash, 21.86 to 30.7 percent of iron tailings, 4 to 6 percent of bentonite and 19.5 to 34.4 percent of dry quenching coke ash, and the mass ratio of Al2O3 to SiO2 is 1.35 to 1.7. The secondary aluminum ash, the iron tailings and the bentonite are used as raw materials, the cost is low, the process is simple, and the obtained beta-Sialon is stable in chemical property and good in high-temperature strength; meanwhile, by adding second phases (corundum and SiC), the hardness, strength, corrosion resistance and oxidation resistance of the beta-Sialon-based composite powder can be improved; and SiC and beta-Sialon are compounded, and the reinforcing and toughening effects are achieved through dispersion strengthening of second-phase particles.
本发明公开了一种β‑Sialon‑Al2O3‑SiC复合陶瓷材料及其制备方法，所述复合陶瓷材料的原料以质量百分比计包括如下组份：二次铝灰33.65‑45.7%，铁尾矿21.86‑30.7%，膨润土4‑6%，干熄焦灰19.5‑34.4%，且Al2O3与SiO2的质量比为1.35‑1.7。本发明以二次铝灰、铁尾矿和膨润土为原料，成本低廉，工艺简单，所获得的β‑Sialon化学性质稳定且高温强度良好；同时通过添加第二相（刚玉和SiC）能提高β‑Sialon基复合粉体的硬度、强度、耐蚀性和抗氧化性；并且SiC与β‑Sialon相复合，通过第二相颗粒弥散强化，达到增强增韧的作用。
Beta-Sialon-Al2O3-SiC composite ceramic material and preparation method thereof
一种β-Sialon-Al2O3-SiC复合陶瓷材料及其制备方法
YU SHUI (Autor:in) / MAO RUI (Autor:in) / WANG FEI (Autor:in) / YAO HAIWEI (Autor:in)
11.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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