Low Temperature Molten Salt Synthesis of Nano Crystalline MgAl2O4

摘要：

　　MgAl2O4 (MA) spinel nano powder was synthesized using a molten salt technique,by heating stochiometric composition of MgO and AlOOH.NaCl salt was used as reactor media for MA spinel formation.Reactants and molten salt mixtures were fired in an alumina crucible for 3 h at temperature ranges from 850℃ to 1000℃.The synthesis temperature was decreased from 1300℃ required by the conventional solid-solid reaction process to 850℃ for molten salt approach.The synthesized powders were characterized by XRD,SEM and BET technique.XRD revealed complete formation of MA without remaining of any secondary phase for synthesized powder fired at 850℃ for 3 h.Moreover,electron microscopy illustrated that the MA morphology and size was the same as the nano boehmite morphology which confirmed the existence of a ‘template process’ mechanism during the molten salt synthesis.In addition,high surface area for nano MA powders was achieved in this method.

关键词： Molten salt Nano powders MgAl2O4

作者: Y.Safaei Naeini Farhad.Golestani-Fard

作者单位: School of Metallurgy and Materials Engineering,Iran University of Science and Technology,P.O.Box:168 School of Metallurgy and Materials Engineering,Iran University of Science and Technology,P.O.Box:168

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 77-81

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）