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http://dx.doi.org/10.3740/MRSK.2003.13.4.213

Microstructure Control of Fibrous Monolithic Al2O3-ZrO2 Composites  

Kim, Ki-Hyun (Chungnam Research Center for Nano Materials, School of Materials Engineering, Kong-ju National University)
Kim, Taek-Soo (Chungnam Research Center for Nano Materials, School of Materials Engineering, Kong-ju National University)
Lee, Byong-Taek (Chungnam Research Center for Nano Materials, School of Materials Engineering, Kong-ju National University)
Publication Information
Korean Journal of Materials Research / v.13, no.4, 2003 , pp. 213-218 More about this Journal
Abstract
Fibrous monolithic control of$ Al_2$$O_3$ -$ZrO_2$composite was investigated by multi-pass extrusion process. To obtain sound $Al_2$$O_3$-X $O_2$sintered bodies, burning out and sintering process were carefully carried out. The sintered bodies showed continuous, fibrous monolithic microstructure without any swelling. Many microcracks were observed at the $Al_2$$O_3$-$ZrO_2$interfaces due to the mismatching of thermal expansion coefficient between $Al_2$$O_3$ and $ZrO_2$phase. Most of m- $ZrO_2$grains included twin defects such as (001), (010) and (011) type to accommodate the phase transformation induced stress.
Keywords
Fibrous monolith; ${Al_2}{O_3}-{ZrO_2}$; microstructure control; composite;
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