Effect of BeO Addition on Sintering of Transparent Y2O3 Export

@article{citeulike:1288963, abstract = {The effects of BeO addition (0\~{}2 wt\%) on the pressureless sintering process and the transparency of yttria were studied. The addition of BeO (0.1\~{}0.5 wt\%) promoted the sintering of Y2O3 to decrease markedly the residual pores in sintered bodies above 2100°C. The transparency of sintered Y₂O₃ was independent of compacting pressure (i\~{}10 t/cm²). BeO vaporized with the increase of sintering temperature and more than half of the initial contents of BeO decreased above 1800°C. The transmittance (thickness 1.0 mm, wave length 300\~{}700 nm) of the 0.1 wt\% BeO-Y₂O₃ sintered at 2150\~{}2250°C for 50\~{}300 min. in H₂ was 80\%. Tit was suggested that the liquid phase formation of Y₂O₃-BeO system and the vaporization of BeO contributed to the fabricating of the transparent Y₂O₃.}, author = {Toda, Gyozo and Matsuyama, Iwao}, citeulike-article-id = {1288963}, howpublished = {in Japanese}, journal = {Journal of the Japan Society of Powder and Powder Metallurgy}, keywords = {atcal, be, transparent\_ceramic, yttria}, pages = {486--491}, posted-at = {2007-06-06 20:34:36}, priority = {2}, title = {Effect of BeO Addition on Sintering of Transparent Y2O3}, volume = {35}, year = {1988} }

TY - JOUR ID - citeulike:1288963 L3 - citeulike-article-id:1288963 N2 - The effects of BeO addition (0~2 wt%) on the pressureless sintering process and the transparency of yttria were studied. The addition of BeO (0.1~0.5 wt%) promoted the sintering of Y2O3 to decrease markedly the residual pores in sintered bodies above 2100°C. The transparency of sintered Y₂O₃ was independent of compacting pressure (i~10 t/cm²). BeO vaporized with the increase of sintering temperature and more than half of the initial contents of BeO decreased above 1800°C. The transmittance (thickness 1.0 mm, wave length 300~700 nm) of the 0.1 wt% BeO-Y₂O₃ sintered at 2150~2250°C for 50~300 min. in H₂ was 80%. Tit was suggested that the liquid phase formation of Y₂O₃-BeO system and the vaporization of BeO contributed to the fabricating of the transparent Y₂O₃. JF - Journal of the Japan Society of Powder and Powder Metallurgy EP - 491 TI - Effect of BeO Addition on Sintering of Transparent Y2O3 VL - 35 SP - 486 KW - atcal KW - be KW - transparent_ceramic KW - yttria AU - Toda, Gyozo AU - Matsuyama, Iwao PY - 1988/// ER -