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Preparation method for non-water-based high-purity nanoscale aluminum oxide ceramics
The invention relates to a preparation method for aluminum oxide ceramics, in particular to a preparation method for non-water-based high-purity nanoscale aluminum oxide ceramics. Aluminum oxide powder is added into a premixed solution to form a sizing agent, then, a binding agent is added for ball milling, a plasticizer is added for ball milling to obtain a mixture, defoaming is performed for 1-3 h under the pressure being 0.95-0.1 Mpa, the mixture is made to flow into a trough of a casting machine to obtain a green-pressing sheet, glue discharging is performed on the green-pressing sheet in advance within the oxygen atmosphere at 1000-1300 DEG C, and then the ceramics are obtained through sintering within the hydrogen atmosphere at 1700-1900 DEG C. According to the preparation method for the non-water-based high-purity nanoscale aluminum oxide ceramics, in the high-purity nanoscale aluminum oxide ceramic membrane manufacturing process, the poor phenomena of cracking, wrinkling, peeling and the like of membranes can be effectively avoided, and the rejection rate is lowered.
Preparation method for non-water-based high-purity nanoscale aluminum oxide ceramics
The invention relates to a preparation method for aluminum oxide ceramics, in particular to a preparation method for non-water-based high-purity nanoscale aluminum oxide ceramics. Aluminum oxide powder is added into a premixed solution to form a sizing agent, then, a binding agent is added for ball milling, a plasticizer is added for ball milling to obtain a mixture, defoaming is performed for 1-3 h under the pressure being 0.95-0.1 Mpa, the mixture is made to flow into a trough of a casting machine to obtain a green-pressing sheet, glue discharging is performed on the green-pressing sheet in advance within the oxygen atmosphere at 1000-1300 DEG C, and then the ceramics are obtained through sintering within the hydrogen atmosphere at 1700-1900 DEG C. According to the preparation method for the non-water-based high-purity nanoscale aluminum oxide ceramics, in the high-purity nanoscale aluminum oxide ceramic membrane manufacturing process, the poor phenomena of cracking, wrinkling, peeling and the like of membranes can be effectively avoided, and the rejection rate is lowered.
Preparation method for non-water-based high-purity nanoscale aluminum oxide ceramics
SUN SHUMENG (author) / YANG LI (author) / ZHUANG YAPING (author)
2015-10-21
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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