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Preparation method of alumina powder for ceramic tube shell
The invention discloses a preparation method of alumina powder for a ceramic tube shell, which comprises the following steps: by taking micron-sized alumina Al2O3 powder as a raw material, adding a proper amount of one or more of SiO2, MgO, CaO, TiO2, MnO2, La2O3, BaCO3 and Cr2O3, mixing to form a multi-component composite sintering aid, forming a solid solution and a liquid phase by the multi-component composite sintering aid and alumina Al2O3 at high temperature, and sintering at high temperature to obtain the alumina powder for the ceramic tube shell. The sintering temperature can be obviously reduced, and meanwhile, the mechanical property, the electrical property and the heat-conducting property of the prepared aluminum oxide ceramic are improved. The preparation process is strictly controlled through ball milling, granulation, dry pressing and sintering, the aluminum oxide ceramic for the ceramic packaging tube shell with stable performance can be prepared, and the prepared aluminum oxide for the ceramic packaging tube shell completely meets the application requirement in the field of the ceramic packaging tube shell.
本发明公开了一种陶瓷管壳用氧化铝粉体的制备方法，该方法以微米级氧化铝Al2O3粉体为原料，加入适量SiO2、MgO、CaO、TiO2、MnO2、La2O3、BaCO3、Cr2O3中的一种或种共同混合而成的多组份复合烧结助剂，该多组份复合烧结助剂通过与氧化铝Al2O3在高温下形成固溶体和液相，可显著提降低烧结温度，同时提高所制备氧化铝陶瓷的力学性能、电性能及导热性能。通过球磨、造粒、干压、烧结严格控制制备工艺，可制备性能稳定的陶瓷封装管壳用氧化铝陶瓷，所制备的陶瓷封装管壳用氧化铝完全满足其在陶瓷封装管壳领域的应用。
Preparation method of alumina powder for ceramic tube shell
The invention discloses a preparation method of alumina powder for a ceramic tube shell, which comprises the following steps: by taking micron-sized alumina Al2O3 powder as a raw material, adding a proper amount of one or more of SiO2, MgO, CaO, TiO2, MnO2, La2O3, BaCO3 and Cr2O3, mixing to form a multi-component composite sintering aid, forming a solid solution and a liquid phase by the multi-component composite sintering aid and alumina Al2O3 at high temperature, and sintering at high temperature to obtain the alumina powder for the ceramic tube shell. The sintering temperature can be obviously reduced, and meanwhile, the mechanical property, the electrical property and the heat-conducting property of the prepared aluminum oxide ceramic are improved. The preparation process is strictly controlled through ball milling, granulation, dry pressing and sintering, the aluminum oxide ceramic for the ceramic packaging tube shell with stable performance can be prepared, and the prepared aluminum oxide for the ceramic packaging tube shell completely meets the application requirement in the field of the ceramic packaging tube shell.
本发明公开了一种陶瓷管壳用氧化铝粉体的制备方法，该方法以微米级氧化铝Al2O3粉体为原料，加入适量SiO2、MgO、CaO、TiO2、MnO2、La2O3、BaCO3、Cr2O3中的一种或种共同混合而成的多组份复合烧结助剂，该多组份复合烧结助剂通过与氧化铝Al2O3在高温下形成固溶体和液相，可显著提降低烧结温度，同时提高所制备氧化铝陶瓷的力学性能、电性能及导热性能。通过球磨、造粒、干压、烧结严格控制制备工艺，可制备性能稳定的陶瓷封装管壳用氧化铝陶瓷，所制备的陶瓷封装管壳用氧化铝完全满足其在陶瓷封装管壳领域的应用。
Preparation method of alumina powder for ceramic tube shell
一种陶瓷管壳用氧化铝粉体的制备方法
ZHANG HAO (author) / YANG DIANLAI (author) / ZHANG YINGYING (author) / YANG GUOQING (author) / RONG ZHENWEI (author) / XUE JIAN (author) / XU ZHUANGZHI (author)
2023-06-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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