Preparation of porous Al2O3 ceramics by starch consolidation casting method |
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| Authors: | Zhiwei Chen Guogang Xu Hongzhi Cui Xueying Zhang Xiaoyuan Zhan |
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| Affiliation: | College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao, People's Republic of China |
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| Abstract: | Porous alumina ceramics were fabricated by starch consolidation casting using corn starch as a curing agent while their microstructure, mechanical properties, pore size distribution, and corrosion resistance were examined. Results showed that the porous alumina ceramics with the flexural strength of about 44.31MPa, apparent porosity of about 47.67% and pore size distribution in the range of 1‐4 μm could be obtained with 3wt% SiO2 and 3wt% MgO additives. Corrosion resistance results showed mass losses: hot H2SO4 solution and NaOH solution for 10 hours were 0.77% and 2.19%, which showed that these porous alumina ceramics may offer better corrosion resistance in acidic conditions. |
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| Keywords: | chemical stability mechanical properties microstructure porous ceramic |
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