(1. 清華大學 核能技術(shù)設計研究院， 北京 102201;
2. 中國科學院 過程工程研究所， 北京 100080)
摘 要: 以AlCl3·6H2O代替異丙醇鋁作為原料，合成了AlOOH溶膠，再在多孔α-Al2O3基體上，通過浸提法制備了α-Al2O3陶瓷復合膜，研究了基體質(zhì)量對膜和成膜過程的影響。 研究發(fā)現(xiàn)， 基體的質(zhì)量不但對膜的制備工藝過程有很大的影響， 還對最終膜孔的結(jié)構(gòu)及熱處理燒結(jié)機理過程有重要影響。 考察了γ-Al2O3薄膜的孔徑和分離滲透性能隨溫度變化的規(guī)律，以便利用γ-Al2O3的相變燒結(jié)過程原理，控制復合層陶瓷膜的孔徑大小和分布。
關鍵字: 基體； 陶瓷復合膜； 孔徑控制
（1. Institue of Nuclear Energy and Technology, Tsinghua University, Beijing 102201， China;
2. Institute of Chemical Metallurgy, Chinese Academy of Science, Beijing 100084, China）
Abstract:Alumina membrane was prepared by depositing AlOOH sol derived from AlCl3·6H2O on the porous substrates with dipping-coating technology. The research mainly focused on the effects of substrates on the ceramic composite membrane and the processing. The results show that the porous ceramic substrates have great effects not only on processing procedure, but also on the pore structure and sintering mechanism. To control the pore size and its distribution of ceramic composite membrane, the change of the pore size and permeate of membrane was also taken into experiments due to phase transition and sintering under higher temperature.
Key words: substrate; ceramic composite membrane; pore size control
