采用新型的Sol-gel工艺制备了Ba0.6Sr0.4TiO3(BST)超细粉体,将BST粉体进行压制和烧结,获得了晶粒尺寸在1μm以内的BST陶瓷块体.观察了BST陶瓷块体的结晶情况并测定了其电学性能.在Sol-gel工艺中,加入了有机大分子量聚乙烯吡咯烷酮(polyvinyl pyrrolidone,PVP)制备BST前驱体.实验结果表明:PVP的加入可有效增加前驱体的稳定性和分散性,降低BST陶瓷的预烧温度约250℃,并在1200℃获得晶粒细小、致密的BST陶瓷.BST陶瓷,显示弥散相变特征.
参考文献
| [1] | Flynn A.M.;Tavrow L.S. .Piezoelectric micromotors for microrobots[J].Journal of Microelectromechanical Systems: A Joint IEEE and ASME Publication on Microstructures, Microactuators, Microsensors, and Microsystems,1992(1):44-51. |
| [2] | MansinghA;AronAK .[J].Indian Journal of Pure and Applied Mathematics,1991,29:657. |
| [3] | Dey S K .[J].Ferroelectrics,1992,135:1. |
| [4] | Arlt G;Hennings D;With G .Dielectric properties of finegrained barium titanate ceramics[J].Journal of Applied Physiology,1985,58(04):1619. |
| [5] | Zhu W.;Akbar SA.;Asiaie R.;Wang CC. .FAST-SINTERING OF HYDROTHERMALLY SYNTHESIZED BATIO3 POWDERS AND THEIR DIELECTRIC PROPERTIES[J].Journal of Materials Science,1997(16):4303-4307. |
| [6] | Rhim S M;Bak H;Hong S et al.Effect of heating rate on the sintering behaviour and the dielectric properties of ceramics prepared by boron-containing liquid-phase sintering[J].Journal of the American Ceramic Society,2000,83(12):3009. |
| [7] | 栾伟玲,高濂,郭景坤.细晶粒BaTiO3陶瓷的微结构及介电性能测试[J].无机材料学报,2000(06):1043-1049. |
| [8] | Bykov A I;Polotai A V;Ragulya A V et al.Theory and technology of sintering,heat and chemical heat-treatment process[J].Powder Metallurgy and Metal Ceramics,2000,39(7-8):395. |
| [9] | Schmidt H .[J].Journal of Non-Crystalline Solids,1988,100:51. |
| [10] | 叶扬,丁爱丽,唐新桂,罗维根.Ba0.7Sr0.3TiO3薄膜的制备、结构及性能研究[J].无机材料学报,2002(01):125-130. |
| [11] | 严瑞喧.水溶性高分子[M].北京:化学工业出版社,1998:6. |
| [12] | Kutty T R N;Ravi V .[J].Materials Science and Engineering B,1994,25(2-3):119. |
| [13] | Yao Xi;Chen Zhili;Cross L E .[J].Journal of Applied Physiology,1983,54:3399. |
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