配制以 Al(NO3)3·9H2O、Mg(NO3)2·6H2O 和 TEOS 为前驱体原料的溶胶,使其增溶于 Triton X-100/正己醇/环己烷反相微乳液体系中,合成了堇青石纳米粉体.对微乳液拟三元相图、凝胶所需 pH 值及温度条件、溶胶凝胶机理及析晶过程进行了研究.结果表明,该方法合成纳米堇青石的最佳 pH 值为 5.5,微乳液体系的最佳增溶温度为 45℃.所得纳米粉体能在 950 ℃下低温致密化烧结,具有良好的介电性能(ε<3,tanδ<0.001;1 GHz),是应用于高频片式电感等电子元器件的理想介质材料.
参考文献
[1] | Reinsch, S;Nascimento, MLF;Muller, R;Zanotto, ED .Crystal growth kinetics in cordierite and diopside glasses in wide temperature ranges[J].Journal of Non-Crystalline Solids,2008(52/54):5386-5394. |
[2] | 曾令可,李得家,刘艳春,王慧,程小苏,刘平安,税安泽.片状结构堇青石粉体制备的研究[J].人工晶体学报,2009(01):138-142. |
[3] | 吴任平,阮玉忠,于岩.利用含铝废渣合成的堇青石结构表征[J].人工晶体学报,2007(05):1091-1095. |
[4] | Jankovi-Castvanl;Lazarevic S;Tanaskovic D et al.Electrical Properties of Cordierite Obtained by Non-hydrolytic Sol-gel Method[J].Journal of the European Ceramic Society,2007,27(13-15):3659-3661. |
[5] | Yalamac E;Akkurt S .Additive and Intensive Grinding Effects on the Synthesis of Cordierite[J].Ceramics International,2006,32(07):825-832. |
[6] | Mei S;Yang J;Ferreira J M F .Microstructural Evolution in Sol-gel Derived P2O5-doped Cordierite Powders[J].Journal of the European Ceramic Society,2000,20(12):2191-2197. |
[7] | Menchi AM;Scian A N .Mechanism of Cordierite Formation Obtained bythe Sol-gel Technique[J].Materials Letters,2005,59(21):2664-2667. |
[8] | Ponthieu E;Payen E;Grimblot J .Ultrafine Alumina Powders Via a Sol-emulsion-gel Method[J].Journal of Non-Crystalline Solids,1992,147-148:598-605. |
[9] | Hae-Jool Lee .Synthesis of resorcinol/formaldehyde gel particles by the solemulsion-gel technique[J].Materials Letters,1998(4/5):197-200. |
[10] | Wuyi Zhou;Qingyun Cao;Shaoqiu Tang .Effects on the size of nano-TiO_2 powders prepared with sol-emulsion-gel method[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2006(1):32-36. |
[11] | Ritva Lindberg;Johan Sjoeblom;Goeran Sundholm .Preparation of silica particles utilizing the sol-gel and the emulsion-gel processes[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,1995(1):79-88. |
[12] | 关振铎;张中太;焦金生.无机材料物理性能[M].北京:清华大学出版社,1992:287-335. |
[13] | Kingery W D;Bowen H K;Uhlmann D R.Introduction to Ceramic(2rd)[M].New York:IFI/Plenum,1977:154-195. |
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