Low-temperature synthesis and characterization of apatite-type lanthanum silicates

摘要：

Al-and Sr-doped apatite-type lanthanum silicates (ATLS) have been prepared using mechanochemical activation (MA) and Pechini (Pe) methods, with some structural and electrical properties of doped samples being studied. MA provides ATLS formation already at room temperature after 20-35 min activation. Synthesis via Pe route occurs through the solid state reaction mechanism. MA of carbonate precursors obtained via Pe method results in the formation of a single-phase ATLS after annealing at 900℃. For Al-doped apatite samples formation of LaAlO3 as a secondary phase is observed at high substitution levels depending on the sample stoichiometry, which affects properties of ceramics obtained.

关键词： Lanthanum silicate Apatite Synthesis Conductivity Ozygen mobility

作者: T.Kharlamova V.Muzykantov N.Mezentseva M.Chaikina N.Uvarov J.Frade Chr.Argirusis S.Pavlova V.Sadykov O.Lapina D.Khabibulin T.Krieger V.Zaikovskii A.Ishchenko A.Salanov

作者单位: Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, Russia Institute of Solid State Chemistry SB RAS, 630128 Novosibirsk.Russia University of Aveiro, 3810-193 Aveiro, Portugal Clausthal University of Technology, 38678 Clausthal-Zellerfeld, Germany

会议类型: 国际会议

会议名称: The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)

会议地点: 上海

会议语种:英文

页码: 1018-1023

在线出版日期: 2007-07-01（万方平台首次上网日期，不代表论文的发表时间）