用溶胶-凝胶(Sol-gel)技术及柠檬酸自燃法,成功制备了新型的纳米CaCu3Ti4O12氧化物超细粉体.将得到的超细粉体压块,并在1000℃高温烧结成微晶陶瓷材料.用X射线粉末衍射(X-ray powdef diffraction,XRD)确定了烧结体的晶相,用扫描电镜(Scanning electron microscopy,SEM)观察了晶粒的形貌特征与大小.同时研究了徽晶陶瓷的介电常数和介电损耗.CaCu3Ti4O12室温介电常数达104,接近目前高介电常数复合含Pb钙钛矿系陶瓷;介电损耗低于0.20.因此,Sol-gel工艺技术是一种制备CaCu3Ti4O12超细粉体与高介电常数微晶陶瓷的有效方法.
参考文献
| [1] | Subramanian M A;Dong Li;Duan N et al.[J].Journal of Solid State Chemistry,2000,151:323. |
| [2] | Ramirez AP.;Gardel M.;Blumberg G.;Li D.;Vogt T. Shapiro SM.;Subramanian MA. .Giant dielectric constant response in a copper-titanate[J].Solid State Communications,2000(5):217-220. |
| [3] | West A R;Adams T B;Morrison F D et al.[J].Journal of the European Ceramic Society,2004,24:1439. |
| [4] | Jha P;Arora P;Ganguli A K .[J].Materials Letters,2002,4179:1. |
| [5] | Awatef Hassini;Monique Gervais;Jér(o)me Coulon et al.[J].Materials Science and Engineering B:Solid State Materials for Advanced Technology,2001,B87:164. |
| [6] | Adams T B;Sinclair D C;West A R .[J].Advanced Materials,2002,14(08):1321. |
| [7] | 王森,纪箴,张跃,周成.MLCC用高介电常数陶瓷介质材料的研究现状及发展趋势[J].材料与冶金学报,2003(03):227-231. |
| [8] | Homes C C;vogt T;Shapiro S M .[J].Science,2001,293(5530):673. |
| [9] | Almeida A F L;de Oliveira R S;Góes J C et al.[J].Materials Science and Engineering,2002,B96:275. |
| [10] | 王歆,庄志强,齐雪君.金属氧化物溶胶-凝胶法制备技术及其应用[J].材料导报,2000(11):42-44. |
| [11] | Wang Feng;Li Musen;Lu Yupeng et al.[J].Materials Letters,2005,59:916. |
| [12] | Bochu B;Deschizeaux M N;Joubert J C .[J].Journal of Solid State Chemistry,1979,29:291. |
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