Sol-gel法制备纳米TiO2锐钛矿相的晶化动力学Kinetic Study of the Crystallization of Nano-scale TiO2 Anatase Prepared by Sol-gel Technique
邵艳群,唐电,熊惟皓,张腾
摘要(Abstract)：
采用Sol gel技术制备了纳米级锐钛矿TiO2 ,并在 30 0～ 4 5 0℃之间发生了非晶向纳米晶的转变 ,运用非等温结晶过程的计算原理经过数学变换 ,计算了Avrami指数n、晶化激活能E、晶粒长大维数m和晶粒长大激活能Q等动力学参数。结果表明 ,在非晶向纳米晶的转变过程中 ,纳米晶体的特殊结构m对应着独特的动力学性质。
关键词(KeyWords)： 纳米材料;晶化动力学;Solgel法;TiO2
基金项目(Foundation): 教育部青年骨干教师资助计划项目 ;; 福州大学科技发展基金研究项目 (XKJ(YM) 0 1 1 2 )
作者(Author): 邵艳群,唐电,熊惟皓,张腾
参考文献(References)：
- 1 LuK ,WeiWD ,WangJT .GraingrowthkineticsandinterfacialenergiesinnanocrystallineNiPalloys[J].JApplPhys,1991,69(10):7345～7347.
- 2 LuKe(卢 柯).Phasetransformationfromanamorphousalloyintonanocrystallinematerials(非晶态合金向纳米晶体的相转变)[J].ActaMetallurgicaSinica(金属学报),1994,30(1):B1～21.
- 3 YAOShibing(姚士冰),JIANGXiaoyu(蒋晓瑜),CHENBinyi(陈秉彝),等.StudyonthecrystallinekineticsofNi27Palloypreparedbychemicaldeposition(化学沉积非晶态Ni27P合金的晶化动力学研究)[J].材料保护,1992,25(7):13～15.
- 4 AronneA ,PerniceP ,MarottaA .Crystallizationofgel derivedzirconiaglass[J].JMaterSciLetts,1991,10:1136～1138.
- 5 OzawaT .Kineticsofnon isothermalcrystallization[J].Polymer,1971,12:150～158.
- 6 MatusitaK ,SakkaS .Kineticstudyofthecrystallizationofglassbydifferentialscanningcalorimetry[J].PhysChemGlasses,1979,20:81～84.
- 7 MatusitaK ,SakkaS ,MatsuiY .Determinationoftheactivationenergyforcrystalgrowthbydifferentialthermalanalysis[J].JMaterSci,1975,10:961～966.
- 8 SHAOYanqun(邵艳群),TANGDian(唐 电),CHENShiren(陈士仁).CrystallizationprocessofanataseTiO2 preparedbysol gelmethod(锐钛矿TiO2的溶胶凝胶晶化过程)[J].HeatTreatmentofMetals(金属热处理),2001,(4):46～47.
- 9 PushanAyyub,ManuMultani,MustansirBarma,etal.Size inducedstructuralphasetransitionsandhyperfinepropertiesofmicrocrystallineFe2O3[J].JPhysC :SolidStatePhys,1988,21:2229～2245.
- 10 PelinoM ,CantaliniC ,VeglioF .Crystallizationofglassesobtainedbyrecyclinggoethiteindustrialwastestoproduceglass ceramicmaterials[J].JMaterialsScience,1994,29:2087～2094.
- 11 LandauDP .Phasetransitionintheisingsquarelatticewithnext nearest neighborinteractions[J].PhysRevB ,1980,21(3):1285～1297.
- 12 SHAOYanqun(邵艳群).ThephasetransitionandphasecompositionofnanoscaleTiO2(纳米级二氧化钛的相转变与相结构)[D].福建:福州大学,1998.
文章评论(Comment)：
|
||||||||||||||||||
|
||||||||||||||||||