CaCu_3Ti_4O_(12)陶瓷的不同方法制备及微结构研究
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摘要
分别通过溶胶凝胶-燃烧法、水热反应法和静电纺丝法制备CaCu_3Ti_4O_(12)(CCTO)陶瓷粉体,并利用XRD和SEM对CCTO样本进行物相分析和形貌观察,研究不同制备方法及工艺参数对CCTO陶瓷的结晶程度、物相组成、尺寸及形貌的影响。研究表明,溶胶凝胶-燃烧法和静电纺丝法可以获得纯度较高且结晶良好的CCTO陶瓷,而水热合成法容易出现CuO和CaTiO_3杂相;三种方法可以分别获得微米级块体、纳米级球状颗粒及纤维,其平均粒径依次分别为8μm、200nm和500nm～1000nm。
引文
[1]M.A.Subramanian,D.Li,N.Duan,B.A.Reisner,A.W.Sleight.High dielectric constant in ACu3Ti4O12 and ACu3Ti4FeO12phases[J].Journal of Solid State Chemistry,2000,151(2):323-325.
[2]D.C.Sinclair,T.B.Adams,F.D.Morrison,A.R.West.CaCu3Ti4O12:one-step internal barrier layer capacitor[J].Applied PhysicsLetters,2002,80(12):2153-2155.
[3]Z.D.Wang,J.Q.Guo,W.T.Hao,E.S.Cao,Y.J.Zhang,L.Sun,P.P.Xu.Microstructures and dielectric properties of sol-gel preparedK-dopedCaCu3Ti4O12ceramics[J]JournalofElectroceramics,2018,40(2):115-121.
[4]李含,邹正光,吴一,等.CaCu3Ti4O12高介电材料的研究现状与发展趋势[J].硅酸盐通报,2009,28(1):121-126.
[5]L.Gao,X.Wang,H.C.Wang,Q.Q.Lei.Improvement of dielectric performance and interfacial polarization of polyvinylidene fluoride composites with CaCu3Ti4O12@Ni hybrid nanofibers[J].Journal of Materials Science:Materials in Electronics,2018,29(12):10600-10613.
[6]M.A.Ramirez,P.R.Bueno,R.Tararam,A.A.Cacalheiro,E.Longo,J.A.Varela.Evaluation of the effect of the stoichiometric ratio of Ca/Cu on the electrical and microstructural properties of the polycrystalline system[J].J.Phys.D:Appl.Phys.,42(2009):185503.
[7]W.H.Yang,S.H.Yu,R.Sun,R.X.Du.Nano-and microsize effect of CCTO fillers on the dielectric behavior of CCTO/PVDFcomposites[J].ActaMater.,2011,59:5593-5602.
[2]D.C.Sinclair,T.B.Adams,F.D.Morrison,A.R.West.CaCu3Ti4O12:one-step internal barrier layer capacitor[J].Applied PhysicsLetters,2002,80(12):2153-2155.
[3]Z.D.Wang,J.Q.Guo,W.T.Hao,E.S.Cao,Y.J.Zhang,L.Sun,P.P.Xu.Microstructures and dielectric properties of sol-gel preparedK-dopedCaCu3Ti4O12ceramics[J]JournalofElectroceramics,2018,40(2):115-121.
[4]李含,邹正光,吴一,等.CaCu3Ti4O12高介电材料的研究现状与发展趋势[J].硅酸盐通报,2009,28(1):121-126.
[5]L.Gao,X.Wang,H.C.Wang,Q.Q.Lei.Improvement of dielectric performance and interfacial polarization of polyvinylidene fluoride composites with CaCu3Ti4O12@Ni hybrid nanofibers[J].Journal of Materials Science:Materials in Electronics,2018,29(12):10600-10613.
[6]M.A.Ramirez,P.R.Bueno,R.Tararam,A.A.Cacalheiro,E.Longo,J.A.Varela.Evaluation of the effect of the stoichiometric ratio of Ca/Cu on the electrical and microstructural properties of the polycrystalline system[J].J.Phys.D:Appl.Phys.,42(2009):185503.
[7]W.H.Yang,S.H.Yu,R.Sun,R.X.Du.Nano-and microsize effect of CCTO fillers on the dielectric behavior of CCTO/PVDFcomposites[J].ActaMater.,2011,59:5593-5602.