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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing high-purity aluminum oxide ceramic base sheet at low temperature
The invention relates to the field of ceramic materials, particularly to a method for preparing a high-purity aluminum oxide ceramic base sheet at a low temperature. The preparation method comprises the following steps: mixing nano-scale aluminum oxide powder and micron-scale aluminum oxide powder according to a certain ratio; adding an auxiliary agent into an alcohol as a solvent, carrying out ball milling and mixing to obtain a slurry, carrying out casting molding on the slurry, carrying out standing drying to obtain a raw material belt, cutting the raw material belt, and carrying out isostatic pressing to obtain a blank sheet; and sintering the blank sheet to obtain the low-temperature prepared high-purity aluminum oxide ceramic base sheet. According to the preparation method, by grading aluminum oxide powders with different particle sizes, the contact points among the particles are increased, so that the Al2O3 ceramic base sheet with compact texture and good performance is sinteredat a low temperature, and high density and low porosity of the base sheet are realized through composite molding.
本发明涉及陶瓷材料领域，具体涉及一种低温制备高纯氧化铝陶瓷基片的方法，将纳米级氧化铝粉体与微米级氧化铝粉体按一定比例混合，以醇类为溶剂，添加助剂，球磨混合得到浆料，再将浆料流延成型，静置干燥后得到生料带，生料带经裁剪后再进行等静压成型，得到坯片，最后将坯片烧结，得到所述低温制备高纯氧化铝陶瓷基片。本发明通过不同粒径的氧化铝粉体之间进行级配，使颗粒之间接触点增多，在较低温度下烧结出质地致密、性能良好的AlO陶瓷基片，通过复合成型实现基片的高致密度和低气孔率。
Method for preparing high-purity aluminum oxide ceramic base sheet at low temperature
The invention relates to the field of ceramic materials, particularly to a method for preparing a high-purity aluminum oxide ceramic base sheet at a low temperature. The preparation method comprises the following steps: mixing nano-scale aluminum oxide powder and micron-scale aluminum oxide powder according to a certain ratio; adding an auxiliary agent into an alcohol as a solvent, carrying out ball milling and mixing to obtain a slurry, carrying out casting molding on the slurry, carrying out standing drying to obtain a raw material belt, cutting the raw material belt, and carrying out isostatic pressing to obtain a blank sheet; and sintering the blank sheet to obtain the low-temperature prepared high-purity aluminum oxide ceramic base sheet. According to the preparation method, by grading aluminum oxide powders with different particle sizes, the contact points among the particles are increased, so that the Al2O3 ceramic base sheet with compact texture and good performance is sinteredat a low temperature, and high density and low porosity of the base sheet are realized through composite molding.
本发明涉及陶瓷材料领域，具体涉及一种低温制备高纯氧化铝陶瓷基片的方法，将纳米级氧化铝粉体与微米级氧化铝粉体按一定比例混合，以醇类为溶剂，添加助剂，球磨混合得到浆料，再将浆料流延成型，静置干燥后得到生料带，生料带经裁剪后再进行等静压成型，得到坯片，最后将坯片烧结，得到所述低温制备高纯氧化铝陶瓷基片。本发明通过不同粒径的氧化铝粉体之间进行级配，使颗粒之间接触点增多，在较低温度下烧结出质地致密、性能良好的AlO陶瓷基片，通过复合成型实现基片的高致密度和低气孔率。
Method for preparing high-purity aluminum oxide ceramic base sheet at low temperature
一种低温制备高纯氧化铝陶瓷基片的方法
FU CHENGZHI (Autor:in) / CHEN XU (Autor:in) / LI YANAN (Autor:in)
14.04.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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