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http://dx.doi.org/10.4191/KCERS.2010.47.6.509

Effect of Template Content on Microstructure and Flexural Strength of Porous Mullite-Bonded Silicon Carbide Ceramics  

Choi, Young-Hoon (Functional Ceramics Laboratory, Department of Materials Science and Engineering, The University of Seoul)
Kim, Young-Wook (Functional Ceramics Laboratory, Department of Materials Science and Engineering, The University of Seoul)
Woo, Sang-Kuk (Energy Materials Research Center, Korea Institute of Energy Research)
Han, In-Sub (Energy Materials Research Center, Korea Institute of Energy Research)
Publication Information
Journal of the Korean Ceramic Society / v.47, no.6, 2010 , pp. 509-514 More about this Journal
Abstract
Porous mullite-bonded SiC (MBSC) ceramics were fabricated at temperatures ranging from 1400 to $1500^{\circ}C$ for 2 h using silicon carbide (SiC), alumina ($Al_2O_3$), strontium oxide (SrO), and poly (methyl methacrylate-coethylene glycol dimethacrylate) (PMMA) microbeads. The effect of template content on porosity, pore morphology, and flexural strength were investigated. The porosity increased with increasing the template content at the same sintering temperature. The flexural strength showed maximum after sintering at $1450^{\circ}C$/2 h for all specimens due to small pores and dense strut. By controlling the template content and sintering temperature, it was possible to produce porous MBSC ceramics with porosities ranging from 30% to 54%. A maximum flexural strength of ~51MPa was obtained at 30% porosity when no template were used and specimens sintered at $1450^{\circ}C$/2 h.
Keywords
Silicon carbide; Mullite; Mullite-bonded silicon carbide; Porosity; Flexural strength;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
Times Cited By SCOPUS : 3
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