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

Transparent polycrystalline spinel ceramic was fabricated without any sintering aids by spark plasma sintering method of a mixture of Al۲O۳ and MgO powders for only ۱۰min soak at ۱۲۵۰°C. Densification, microstructure and optical transparency of spinel were examined. The spinel exhibits an in-line transmission of ۵۵% for a visible-wavelength of ۴۷۰nm and high hardness value of ۲۰۴۰ HV.

کلیدواژه ها:

MgAl۲O۴ Spinel ، Spark Plasma Sintering ، Transparent Ceramic