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Aluminum oxide composite ceramic with high thermal shock resistance and preparation method thereof
The invention relates to the technical field of ceramics, in particular to high-thermal-shock-resistance aluminum oxide composite ceramic and a preparation method thereof.The high-thermal-shock-resistance aluminum oxide composite ceramic is prepared from, by weight, 65-95 parts of Al2O3-ZrO2/ceramic fiber or whisker composition, 100-200 parts of deionized water, 8-12 parts of plasticizer and 2-15 parts of low-thermal-expansion-coefficient base material. ZrO2/ceramic fibers or whiskers are added into aluminum oxide, ZrO2 phase change toughening is introduced, ceramic fibers or whiskers are introduced at the same time for binary toughening, a unit with a low thermal expansion coefficient or a negative expansion coefficient is introduced, the thermal expansion coefficient of the aluminum oxide ceramic is reduced, the uniformity of a powder interface is improved through high-energy ball milling, and the thermal expansion coefficient of the aluminum oxide ceramic is reduced. The thermal shock property of the aluminum oxide composite ceramic is improved; the method for preparing the ceramic is simple to operate, high in production efficiency and low in production cost, and the ceramic round tube made of the aluminum oxide composite ceramic can meet the requirement for high thermal shock resistance and can be widely applied to the temperature shock environment.
本发明涉及陶瓷技术领域，具体涉及一种高热震性氧化铝复合陶瓷及其制备方法，包括如下重量份的原料：Al2O3‑ZrO2/陶瓷质纤维或晶须组合物65‑95份、去离子水100‑200份、塑化剂8‑12份、低热膨胀系数基料2‑15份。本发明通过在氧化铝中添加ZrO2/陶瓷质纤维或晶须，在引入ZrO2相变增韧的同时引入陶瓷质纤维或晶须二元增韧，及引入具有较低热膨胀系数或负膨胀系数单元，降低氧化铝陶瓷的热膨胀系数，高能球磨提高粉体界面的均一性，提高了氧化铝复合陶瓷的热震性；而制备陶瓷的方法操作简单，生产效率高，生产成本低，利用氧化铝复合陶瓷制作的陶瓷圆管能满足高热震性需求，能够广泛应用于温度骤变环境。
Aluminum oxide composite ceramic with high thermal shock resistance and preparation method thereof
The invention relates to the technical field of ceramics, in particular to high-thermal-shock-resistance aluminum oxide composite ceramic and a preparation method thereof.The high-thermal-shock-resistance aluminum oxide composite ceramic is prepared from, by weight, 65-95 parts of Al2O3-ZrO2/ceramic fiber or whisker composition, 100-200 parts of deionized water, 8-12 parts of plasticizer and 2-15 parts of low-thermal-expansion-coefficient base material. ZrO2/ceramic fibers or whiskers are added into aluminum oxide, ZrO2 phase change toughening is introduced, ceramic fibers or whiskers are introduced at the same time for binary toughening, a unit with a low thermal expansion coefficient or a negative expansion coefficient is introduced, the thermal expansion coefficient of the aluminum oxide ceramic is reduced, the uniformity of a powder interface is improved through high-energy ball milling, and the thermal expansion coefficient of the aluminum oxide ceramic is reduced. The thermal shock property of the aluminum oxide composite ceramic is improved; the method for preparing the ceramic is simple to operate, high in production efficiency and low in production cost, and the ceramic round tube made of the aluminum oxide composite ceramic can meet the requirement for high thermal shock resistance and can be widely applied to the temperature shock environment.
本发明涉及陶瓷技术领域，具体涉及一种高热震性氧化铝复合陶瓷及其制备方法，包括如下重量份的原料：Al2O3‑ZrO2/陶瓷质纤维或晶须组合物65‑95份、去离子水100‑200份、塑化剂8‑12份、低热膨胀系数基料2‑15份。本发明通过在氧化铝中添加ZrO2/陶瓷质纤维或晶须，在引入ZrO2相变增韧的同时引入陶瓷质纤维或晶须二元增韧，及引入具有较低热膨胀系数或负膨胀系数单元，降低氧化铝陶瓷的热膨胀系数，高能球磨提高粉体界面的均一性，提高了氧化铝复合陶瓷的热震性；而制备陶瓷的方法操作简单，生产效率高，生产成本低，利用氧化铝复合陶瓷制作的陶瓷圆管能满足高热震性需求，能够广泛应用于温度骤变环境。
Aluminum oxide composite ceramic with high thermal shock resistance and preparation method thereof
一种高热震性氧化铝复合陶瓷及其制备方法
CHEN WENJIE (author) / HE FENGBIN (author) / CHANG XINFENG (author) / XU ZHONGPING (author) / LIANG YUN (author)
2024-03-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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