Fabrication of Li2TiO3 Ceramic Pebbles by Gelcasting Method
Lithium titanate (Li2TiO3) ceramic pebbles are considered to be a candidate material of the tritium breeders for fusion reactor from the viewpoints of good tritium recovery,chemical stability and other excellent properties.In this study,fine grain and pure Li2TiO3 powders were prepared by solid-state method at 700℃ using TiO2 and Li2CO3 as raw materials.Li2TiO3 pebbles were prepared by gel-casting method using acrylamide (AM) as organic monomer,N,N-methylenebisacrylamide (MBAM) as cross-linker,ammonium citrate as dispersant,and isooctyl alcohol as defoamer.The effect of solid content,dispersant,pH and the ball milling time on the fluidity and dispersion of ceramics slurry were investigated,and the effects of sintering temperature and holding time were also discussed in present study.The sintered ceramic pebbles with diameter of 1.0 mm show a smooth surface,uniform grain size and perfect sphericity.The Li2TiO3 ceramic pebbles sintered at 1250℃ for 8 hours had the highest density (> 90% of theoretical density) and crush strength.
Lithium titanate Tritium breeding material ITER Gelcasting method
Ming Hong Yingchun Zhang Yanhong Liu Baojian Fu
School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,P.R.China
国际会议
The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))
厦门
英文
1717-1720
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）