Synthesis of Nanocrystalline (0).94Bi0.5Na0.5TiO3-0.06BaTiO3 Powder by a Citrate Method

摘要：

　　A citrate method to synthesize 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 nano-powder was studied.The stable gel was obtained by the control of the pH value and temperature of the precursor solution.The BNBT nano-powder was produced after calcining the xerogel at 600℃~800℃.The average grain size of the powder calcined at 700℃ for 3 h is 50 nm,and the grain size of the ceramic sintered at 1080℃ is 0.7 μm.The sintering temperature used is 100℃ lower than the BNBT ceramic prepared by traditional method,but the electrical properties were comparable.In addition,it was found that the ball-milling process has important effect on the morphology of the ceramics and the orientation crystals were eliminated due to the disintegration of agglomerates during milling.

关键词： Lead-free Citrate sol-gel method Nanocrystalline Agglomeration

作者: Zhibin Tian Xiaohui Wang Ji Li Wei Zhao Longtu Li

作者单位: State Key Laboratory of New Ceramics and Fine Processing,Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 103-105

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）