Advanced Ceramics Progress

Advanced Ceramics Progress

In-situ Fabrication of Transparent Magnesium Aluminate Spinel by Spark Plasma Sintering

Authors
1 Ceramic, MERC
2 Research Department of Ceramic, Materials and Energy Research Center (MERC)
3 Ceramic Division, MERC
Abstract
Transparent polycrystalline spinel ceramic was fabricated without any sintering aids by spark plasma sintering method of a mixture of Al2O3 and MgO powders for only 10min soak at 1250°C. Densification, microstructure and optical transparency of spinel were examined. The spinel exhibits an in-line transmission of 55% for a visible-wavelength of 470nm and high hardness value of 2040 HV.
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