以TiO(NO3)2-Ba(NO3)2-C6H8O7·H2O-NH3·H2O为体系,150℃平板快速干燥,采用凝胶自蔓延法经600℃燃烧,在1 200℃可得到单相Ba2Ti9O20.利用DTA,TG,XRD等技术表征了干凝胶和最终得到的氧化物粉末.结果表明干燥温度影响了干凝胶的均匀性,从而决定了最终形成的产物的相组成.分析了凝胶干燥过程的反应机理.
参考文献
| [1] | O'Bryan H M;Thomson J .Phase Equilibria in the TiO2-Rich Region of the System BaO-TiO2[J].Journal of the American Ceramic Society,1974,57(12):522-526. |
| [2] | Jaakola T;Uusimaki A;Leppavuori S .Importance of Homogeneous Composition in Sintering Behavior of Ba2Ti9O20 Ceramics[J].International Journal of High Technol,1986,2:195-206. |
| [3] | Wu J M;Wang H W .Factors Affecting the Formation of Ba2Ti9O20 [J ][J].Journal of the American Ceramic Society,1988,71(10):869-875. |
| [4] | Tsai D S;Chang F P .Calcination and Sintering of Ba2 Ti9O20Alkoxide-Derived Powder[J].Journal of Materials Science Letters,1989,8:1291-1293. |
| [5] | Lu H C;Burkhart L E;Schrader G L .Sol-Gel Process for the Preparation of Ba2 Ti9O20 and BaTi5O11[J ][J].Journal of the American Ceramic Society,1991,74(05):968-972. |
| [6] | Ritter J J;Roth R S;Blendell J E .Alkoxied Precursor Synthesis and Characterization of Phases in the Barium Tianiumoxide System[J ][J].Journal of the American Ceramic Society,1986,69(02):155-162. |
| [7] | Javadpour J;Eror N G .Raman Spectroscopy of Higher Titanate Phases in the BaTiO3-TiO2 System[J].Journal of the American Ceramic Society,1988,71(04):206-213. |
| [8] | Pfaff G .Peroxide Route to Ba2 Ti9O20 synthesize[J].Journal of Materials Science Letters,1993,12(01):32-34. |
| [9] | Yebin Xu;Yanyan He;Liangbin Wang .Synthesis of Ba_2Ti_9O_(20) via ethylenediaminetetraacetic acid precursor[J].Journal of Materials Research,2001(4):1195-1199. |
| [10] | Wang H W;Chung M R .Formation of Ba2 Ti9O20Ceramics from EDTA-Gel-Derived Powers[J].Materials Chemistry and Physics,2002,77:853-859. |
| [11] | Choy JH.;Sohn JH.;Itoh M.;Han YS. .MICROWAVE CHARACTERISTICS OF BAO-TIO2 CERAMICS PREPARED VIA A CITRATE ROUTE[J].Journal of the American Ceramic Society,1995(5):1169-1172. |
| [12] | 薛军民;李承恩;赵梅瑜 et al.Citrate SolutionFreeze-Drying Process for the Preparation of Ba2Ti9O20 Powder[J].功能材料,1997,28(02):161-164. |
| [13] | Komarov A V;Papkin I P .New Routes in the SelfPropagating High-Temperature Synthesis of Barium Oxide[J ][J].Polyhedron,1996,15(08):1349-1352. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%