Characterization of Modified Sol-Gel Derived xSrO·(1-x)BaO·0.5Nb2O5·0.5TiO2 Composite Ceramics
Strontium barium niobate/barium strontium titanate composite ceramics of xSrO·(1-x)BaO·0.5Nb<,2>O<,5>·0.5TiO <,2> (BSTN in short) with a range of Sr/Ba ratios were fabricated using a modified sol-gel method with Nb<,2>O<,2> fine powders suspended in the barium strontium titanate (BST in short) sol solution. Powders obtained from dried gels were calcined at 800℃ for 3h. After preparing bulk ceramics from these powders by sintering at 1200℃ for 3h, the tetragonal tungsten bronze (TTB) phase and perivoskite phase were co-present in compositions between 0.25≤x≤ 0.75, with the increasing of x value, the peaks of pervoskite phase shift to the high angle position slightly while no changes happened in the peak position of TTB phase. The peak intensity of both two phases were also changed.
BSTN peroviskite phase tetragonal tungsten bronze phase composite ceramics
Wu Ze(吴泽) Peng Juan(彭娟) Shan Lianwei(单连伟) Dong Limin(董丽敏) Han Zhidong(韩志东) Zhang Xianyou(张显友)
Material Science and Engineering Department, Harbin University of Science and Technology, Harbin 150 Material Science and Engineering Department,Harbin University of Science and Technology, Harbin 1500
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
436-439
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）