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Fabrication of Al2O3 Porous Ceramic by Gel-foaming Method with Sodium Alginate
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Xiulan HE, Cheng WU, Wenzheng ZHANG, Wei ZHENG
Journal of the Chinese Ceramic Society | 2020, 48(3) : 368 - 374
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Journal of the Chinese Ceramic Society | 2020, 48(3): 368-374
Fabrication of Al2O3 Porous Ceramic by Gel-foaming Method with Sodium Alginate
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Xiulan HE, Cheng WU, Wenzheng ZHANG, Wei ZHENG
Affiliations
  • School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China

    • HE Xiulan (1973-), female, Ph.D., Associate Professor. E-mail:

About Author:

HE Xiulan (1973-), female, Ph.D., Associate Professor. E-mail:

Published: 2020-03-20 doi: 10.14062/j.issn.0454-5648.20190343
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Alumina (Al2O3) porous ceramics green bodies were prepared by a gel-foaming method with sodium alginate as a gelation reagent and sodium alcohol ether sulphate (AES) as a foaming agent, and Al2O3 porous ceramics were sintered by a pressure-less sintering technique. The relationship between the solid content/foaming agent content and the porosity/compressive strength of Al2O3 green bodies was investigated. The effect of sintering temperature on the microstructure and mechanical property of Al2O3 porous ceramics and the curing mechanism of sodium alginate were analyzed. The result show that alumina particles are solidified by a network formed due to the reaction between sodium alginate and free calcium ions. Al2O3 porous green body with a high porosity and a uniform aperture can be obtained under the optimum condition (i.e., solid content of 25% and foaming agent content of 3.0%). The porosity of Al2O3 porous ceramics decreases and the compressive strength increases with the increase of sintering additive content. Excessive sintering temperature leads to the abnormal growth of Al2O3 grain, thus reducing the compressive strength.

alumina porous ceramics  /  gel-foaming method  /  sodium alginate  /  microstructure
何秀兰, 吴成, 张文正, 郑威. 海藻酸钠凝胶-发泡法制备Al2O3多孔陶瓷. 硅酸盐学报, 2020 , 48 (3) : 368 -374 . DOI: 10.14062/j.issn.0454-5648.20190343
Xiulan HE, Cheng WU, Wenzheng ZHANG, Wei ZHENG. Fabrication of Al2O3 Porous Ceramic by Gel-foaming Method with Sodium Alginate[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (3) : 368 -374 . DOI: 10.14062/j.issn.0454-5648.20190343
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Year 2020 volume 48 Issue 3
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doi: 10.14062/j.issn.0454-5648.20190343
  • Receive Date：2019-05-22
  • Online Date：2026-10-29
  • Published：2020-03-20
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  • Received：2019-05-22
  • Revised：2019-06-12
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    School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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