|About this Abstract
||Materials Science & Technology 2015
||Ceramic Optical Materials
||Fabrication of Transparent Magnesium Aluminate Spinel Ceramics using Two Kinds of Spinel Powder with Different Particle Sizes
||Liu Peng, Zhang Jian, Wang Shiwei
|On-Site Speaker (Planned)
In this paper, the spinel pellets were shaped by dry pressing using two kinds of powder, which have different particle sizes, respectively. After that, the transparent spinel ceramics were fabricated through pressureless sintering combined with HIPing post-treatment. The effects of particle sizes on the sintering behavior were investigated. The influences of atmosphere in sintering process on the optical quality of transparent ceramics were surveyed. The results shown that the transparent spinel ceramics can be fabricated under certain sintering process using two kinds of powder. Compared with the sintering temperature of powder of 270nm, the presintering and HIPing temperature of powder of 190nm can be lowered. However, the transmittance of the samples using different powders were equivalent in the best sintering process, respectively. Furthermore, the transmittance of the sample sintered in air was better than that of the sample sintered in vacuum and atmosphere of spinel powder at the same temperature.
||Planned: MS&T all conference proceedings CD