Browse > Article
http://dx.doi.org/10.7735/ksmte.2015.24.4.368

Fabrication of Porous Alumina Ceramics Using Hollow Microspheres as the Pore-forming Agent  

Nie, Zhengwei (Department of Mechanical & Aerospace Engineering, University of Missouri)
Lin, Yuyi (Department of Mechanical & Aerospace Engineering, University of Missouri)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.24, no.4, 2015 , pp. 368-373 More about this Journal
Abstract
Porous alumina ceramics with two different pore sizes were fabricated using hollow microspheres as the pore-forming agent. The relative density, total porosity, and microstructure of the obtained alumina ceramics were studied. It was found that the total porosity of sintered samples with different amounts of hollow microsphere content, from 2.0 to 4.0 wt%, was 69.3-75.6%. The interconnected and spherical cell morphology was obtained with 3.0 wt% hollow microsphere content. The resulting ceramics consist of a hierarchical structure with large-sized cells, and small-sized pores in the cell walls. Moreover, the compressive strength of the sintered samples varied from 8.3-11.5 MPa, corresponding to hollow microsphere contents of 2.0-4.0 wt%.
Keywords
Porous ceramics; $Al_2O_3$; Pore-forming agent; Sintering; Microstructure;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Carn, F., Colin, A., Achard, M. F., Deleuze, H., Saadi, Z., Backov, R., 2004, Rational Design of Macro Cellular Silica Scaffolds Obtained by a Tunable Sol-Gel Foaming Process, Adv. Mater, 16:2 140-144.   DOI   ScienceOn
2 Stuart, A. R., Gonzenbach, U. T., Tervoort, E., Gauckler, L. J., 2006, Processing Routes to Macro Porous Ceramics: A Review, Journal of the American Ceramic Society, 89 1771-1789.   DOI   ScienceOn
3 Sepulveda, P., 1993, Gel Casting Foams for Porous Ceramics, Am. Ceram. Soc. Bull., 76:10 61-65.
4 Scheffler, M., Colombo, P., 2005, Cellular Ceramics: Structure, Manufacturing, Properties and Applications, Wiley- VCH., London.
5 Liu, D., 1998, Preparation and Characterization of Porous Hydroxyapatite Bio-ceramic Via a Slip-casting Route, Ceram. Int., 24:6 441-446.   DOI   ScienceOn
6 Yao, X., Tan, S., Huang, Z., Jiang, D., 2006, Effect of Recoating Slurry Viscosity on the Properties of Reticulated Porous Silicon Carbide Ceramics, Ceramics International, 32 137-142.   DOI   ScienceOn
7 Yao, X., Tan, S., Huang, Z., 2005, Influence of Polymeric Sponge Pre-treatment on Properties of Reticulated Porous Ceramics, Journal of the Chinese Ceramics Society, 33:10 1215-1219.
8 Yao, X., Huang, Z., Tan, S., 2005, Preparation of Silicon Carbide Reticulated Porous Ceramics Sintered at Low Temperature with PCS as Sintering Additive, Journal of Inorganic Materials, 25:10 168-172.
9 Gregorova, E., Pabst, W., 2007, Porosity and Pore Size Control in Starch Consolidation Casting of Oxide Ceramics- Achievements and Problems, Journal of the European Ceramic Society, 27:2-3 669-672.   DOI   ScienceOn
10 Gregorova, E., Pabst, W., 2011, Process Control and Optimized Preparation of Porous Alumina Ceramics by Starch Consolidation Casting, Journal of the European Ceramic Society, 31:12 2073-2081.   DOI   ScienceOn
11 Pabst, W., Gregorova, E., Sedlarova, I., Cerny, M., 2011, Preparation and Characterization of Porous Alumina-zirconia Composite Ceramics, Journal of the European Ceramic Society, 31:14 2721-2731.   DOI   ScienceOn
12 Mao, X., Wang, S., Shimai, S., 2008, Porous ceramics with tri-modal pores prepared by foaming and starch consolidation', Ceramics International, 34:1 107-112.   DOI   ScienceOn
13 Sepulveda, P., Ortega, F. S., Innocentini, D. M., Pandolfelli, V. C., 2000, Properties of Highly Porous Hydroxyapatite Obtained by the Gel Casting of Foams, J. Am. Ceram. Soc., 83:12 3021-3024.   DOI   ScienceOn
14 Colombo, P., Bernardo, E., 2003, Macro- and Micro-cellular Porous Ceramics from Preceramic Polymers, Composites Science and Technology, 63:16 2353-2359.   DOI   ScienceOn
15 Ramsay, H. R., Zhang, M. Q., 2003, Preparation of Porous Hydroxyapatite Scaffolds by Combination of the Gel-casting and Polymer Sponge Methods, Biomaterials, 24:19 3293-3302.   DOI   ScienceOn
16 Akzo Nobel, N. V., viewed 6 July 2015,
17 Gibson, L. J., Ashby, M. F., 1999, Cellular Solids, Structure and Properties, 2nd ed. Cambridge: Cambridge University Press, England.
18 Li, S., Wang, C., Zhou, J., 2013, Effect of Starch Addition on Microstructure and Properties of Highly Porous Alumina Ceramics, Ceramics International, 39:8 8833-8839.   DOI   ScienceOn
19 Lyckfeldt, O.,Ferreirab, J. M. F., 1998, Processing of Porous Ceramics by Starch Consolidation, Journal of the European Ceramic Society, 18 131-140.   DOI   ScienceOn
20 Gregorova, E., Pabst, W., Bohacenko, I., 2006, Characterization of Different Starch Types for Their Application in Ceramic Processing, Journal of the European Ceramic Society, 26:8 1301-1309.   DOI   ScienceOn
21 Eom, J., Kim, Y.,Song, I., Kim, H., 2007, Microstructure and Properties of Porous Silicon Carbide Ceramics Fabricated by Carbothermal Reduction and Subsequent Sintering Process, Materials Science and Engineering, 464:1-2 129-134.   DOI   ScienceOn
22 Khattab, R. M., Walsh, M. M. S., Khalil, N. M., 2012, Preparation and Characterization of Porous Alumina Ceramics Through Starch Consolidation Casting Technique, Ceramics International, 38:6 4723-4728.   DOI   ScienceOn
23 Zhu, X., Jiang, D., Tan, S.,2002, Preparation of Silicon Carbide Reticulated Porous Ceramics, Materials Science and Engineering, 323:1-2 232-238.   DOI   ScienceOn
24 Chun, Y., Kim, Y., 2005, Processing and Mechanical Properties Of Porous Silica-bonded Silicon Carbide Ceramics, Metals and materials International, 11:5 351-355.   DOI   ScienceOn