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Preparation method for in-situ synthesis of mullite whisker self-reinforced cordierite porous ceramic
The invention relates to the technical field of porous ceramic preparation, in particular to a preparation method for in-situ synthesis of mullite whisker self-reinforced cordierite porous ceramic. The preparation method comprises the following steps: carrying out primary ball-milling mixing on a mixture of a magnesium source, an aluminum source and a silicon source, adding a pore-forming agent after mixing, and carrying out secondary ball-milling mixing to obtain a mixture; carrying out compression molding on the mixture to obtain a green body; and drying the green body, and carrying out segmented sintering to obtain the in-situ synthesized mullite whisker self-reinforced cordierite porous ceramic. According to the preparation method, the mullite whiskers are synthesized in situ by adopting a method of combining two times of ball-milling mixing and segmented sintering, and the quantity, the size and the distribution of the whiskers are controlled in a proper range by adjusting a sintering process, so that the mullite whisker self-reinforced cordierite porous ceramic with high porosity and high strength is prepared. The preparation raw materials are wide in source and easy to control, and the technological process is easy to operate.
本发明涉及多孔陶瓷制备技术领域，尤其涉及一种原位合成莫来石晶须自增强堇青石多孔陶瓷的制备方法。本发明将镁源、铝源、硅源的混合物进行一次球磨混料，混料结束后加入造孔剂进行二次球磨混料，得到混合料；将混合料压制成型，得到生坯；将生坯烘干后进行分段烧结，得到原位合成莫来石晶须自增强的堇青石多孔陶瓷。本发明采用两次球磨混料与分段烧结相结合的方法原位合成莫来石晶须，通过调整烧结工艺，将晶须的数量、尺寸以及分布控制在合适范围，进而制得具有高孔隙率、高强度的莫来石晶须自增强堇青石多孔陶瓷。并且制备原料来源广泛，成分易于控制，工艺过程易于操作。
Preparation method for in-situ synthesis of mullite whisker self-reinforced cordierite porous ceramic
The invention relates to the technical field of porous ceramic preparation, in particular to a preparation method for in-situ synthesis of mullite whisker self-reinforced cordierite porous ceramic. The preparation method comprises the following steps: carrying out primary ball-milling mixing on a mixture of a magnesium source, an aluminum source and a silicon source, adding a pore-forming agent after mixing, and carrying out secondary ball-milling mixing to obtain a mixture; carrying out compression molding on the mixture to obtain a green body; and drying the green body, and carrying out segmented sintering to obtain the in-situ synthesized mullite whisker self-reinforced cordierite porous ceramic. According to the preparation method, the mullite whiskers are synthesized in situ by adopting a method of combining two times of ball-milling mixing and segmented sintering, and the quantity, the size and the distribution of the whiskers are controlled in a proper range by adjusting a sintering process, so that the mullite whisker self-reinforced cordierite porous ceramic with high porosity and high strength is prepared. The preparation raw materials are wide in source and easy to control, and the technological process is easy to operate.
本发明涉及多孔陶瓷制备技术领域，尤其涉及一种原位合成莫来石晶须自增强堇青石多孔陶瓷的制备方法。本发明将镁源、铝源、硅源的混合物进行一次球磨混料，混料结束后加入造孔剂进行二次球磨混料，得到混合料；将混合料压制成型，得到生坯；将生坯烘干后进行分段烧结，得到原位合成莫来石晶须自增强的堇青石多孔陶瓷。本发明采用两次球磨混料与分段烧结相结合的方法原位合成莫来石晶须，通过调整烧结工艺，将晶须的数量、尺寸以及分布控制在合适范围，进而制得具有高孔隙率、高强度的莫来石晶须自增强堇青石多孔陶瓷。并且制备原料来源广泛，成分易于控制，工艺过程易于操作。
Preparation method for in-situ synthesis of mullite whisker self-reinforced cordierite porous ceramic
一种原位合成莫来石晶须自增强堇青石多孔陶瓷的制备方法
LIU QIUXIANG (author) / WANG GUOQING (author) / WANG RIXIN (author) / YANG WENJIE (author) / HU KAI (author) / WANG WENYI (author) / ZENG BANGXING (author) / JIA ZIQI (author)
2024-11-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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