湛新星;同鑫;

• 1:贵州师范大学化学与材料科学学院

摘要(Abstract)：

通过溶胶-凝胶一步法制备了晶粒尺寸在10μm以下的致密的Ba (Ti_(0.86)Zr_(0.14))O_3基Y5V型陶瓷,系统研究了溶胶的pH值对粉体的粒径、陶瓷的烧结及介电性能的影响规律。结果表明,溶剂的pH值对粉体的形成、粒度分布和团聚产生影响,进而影响到陶瓷的性能。pH=2.5时制备的陶瓷的最大介电常数达到21200。在溶胶-凝胶一步法中,所有的反应都发生在原子尺度上,最终得到结晶程度高、化学计量组成均匀的纳米颗粒,为制备高纯超细的钛酸钡基Y5V陶瓷开辟了新的途径。

关键词(KeyWords)： 溶胶-凝胶法;pH值;Ba(Ti_(0.86)Zr_(0.14))O_3;Y5V陶瓷;介电性能

Abstract:

Keywords:

基金项目(Foundation): 贵州省科学技术基金项目(黔科合LH字[2014]7044号)

作者(Author): 湛新星;同鑫;

Email:

DOI: 10.16521/j.cnki.issn.1001-9642.2020.12.007

参考文献(References)：

• [1]Qi J Q,Peng T,Hu Y M,et al.Direct synthesis of ultrafine tetragonal BaTiO_3 nanoparticles at room temperature[J].Nanoscale Res Lett,2011,6(466):1-4.
• [2]骆春媛,刘敬肖,史非,等.Y,La及Nb掺杂的BaTiO_3半导体陶瓷的研究[J].中国陶瓷,2013,49(07):28-30.
• [3]Nuraje N.,Su K..Perovskite ferroelectric nanomaterials[J].Nanoscale,2013,5(19):8752-8780.
• [4] Guillemet Fritsch S.,Valdez Nava Z.,Tenailleau C.,et al.Colossal permittivity in ultrafine grain size BaTiO_(3-x)and Ba_(0.95)La_(0.05)TiO_(3-x)materials[J].Adv Mater,2008,20(3):551-555.
• [5]张晓云,丁士华,宋天秀,等.Y~(3+)掺杂对Ba_(0.99)La_(0.01)TiO_3陶瓷介电性能的影响[J].中国陶瓷,2019,55(6):13-19.
• [6]Y onggang W.,G a n g X.,Linlin Y.,et al.Hydrothermal synthesis of single-crystal BaTiO_3dendrites[J].Mater Lett,2009,63:239-241.
• [7] Beck H.P.,Eiser W.,Haberkorn R..Pitfalls in the synthesis of nanoscaled perovskite type compounds.Part I:Influence of different sol-gel preparation methods and characterization of nanoscaled BaTiO_3[J].J Eur Ceram Soc,2001,21(6):687-693.
• [8]Das R.N.,Pramanik,P..Chemical synthesis of nanocrystalline lead zirconate-titanate powders using tartarate precursor[J].Mater Lett,1999,40(6):251-254.
• [9]Rabuffetti F A,Brutchey R L.Structural evolutionof BaTiO_3 nanocrystals synthesized at room temperature[J].J Am Chem Soc,2012,134(22):9475-9487.
• [10]Gao Y.,Shvartsman V.V.,Elsukova A.,et al.Low-temperature synthesis of crystalline BaTiO_3 nanoparticles by one-step"organosol"-precipitation[J].J Mater Chem,2012,22(34):17573-17583.
• [11]Harizanov O.,. Harizanova A.,Ivanova T..Formation and characterization of sol-gel barium titanate[J].Mat Sci Eng B,2004,106(2):191-195.
• [12]Zhan X.,Cui B.,Xing Y.,et al.A novel process to synthesize high-k'Y5V'nanopowder and ceramics[J].Ceram Int,2012,38(1):389-394.
• [13]Epifani M,D I az R,Arbiol J,et al.Nanocrystalline metal oxides from the injection of metal oxide sols in coordina ting solutions:synthesis,cha ra cterization,th ermal stabilization,device processing,and gas-sensing properties[J].Adv Funct Mater,2006,16(11):1488-1498.
• [14]Kavian R.,Saidi A..Sol-gel derived BaTiO_3nanopowders[J].J Alloy Compd,2009,468:528-532.
• [15]Arlt G..The influence of microstructure on the properties of ferroelectric ceramic[J].Ferroelectrics,1990,104:217-227