甘氨酸（GNP）为还原剂、硝酸盐为氧化剂，利用甘氨酸‐硝酸盐燃烧法制备beta‐Al2 O3前驱粉料。利用热分析（TG／DSC）、X射线衍射分析（XRD）、扫描电镜（SEM ）、核磁共振（NMR）和交流阻抗谱（EIS）等测试技术对beta‐Al2 O3的合成工艺进行研究。结果表明：该法合成beta‐Al2 O3前驱粉料的温度为1150℃，比固相反应法低了150℃，平均粒径约为42．0nm ，具有较好的成型和烧结性能。将素坯在1620℃保温烧结，得到的烧结体的结构中Al（Ⅳ）和Al（Ⅵ）分别位于δ＝45和δ＝－6附近，相对密度为97．6％；350℃时的离子电导率为0．046S · cm －1。
Beta‐Al2 O3 precursor powders were synthesized by glycine‐nitrate combustion at a low tem‐perature using metal nitrate and GNP as raw materials .The thermal decomposition mechanism of the gel and the formation process of beta‐Al2 O3 were investigated by XRD ,TG/DSC ,SEM ,NMR and EIS .The results show that beta‐Al2 O3 precursor powder with the average size of 42 .0nm can be ob‐tained at 1150℃ ,150℃ lower than the solid state reaction .The precursor powder has good forming and sintering performance .The sample is calcined at 1620℃ ,then the Al(Ⅳ) and the Al(Ⅵ) in the structure of the sample is aroundδ=45 andδ= -6 ,respectively .T he relative density of the sample is 97 .6% .T he ionic conductivity at 350℃ is 0 .046S · cm -1 .
参考文献
| [1] | 林祖纕.上海硅酸盐研究所β″-Al2O3陶瓷的研究简介[J].功能材料,2004(01):130-131,134. |
| [2] | 田长安 .磷灰石型氧化物电解质材料和对流——扩散法梯度结构电解质薄膜制备[D].南京工业大学,2007. |
| [3] | MENG Bo;TAN Xiaoyao;ZHANG Baoyan;YANG Naitao.Synthesis and characterization of SrCe0.95Y0.05O3-δ nano powders by low temperature combustion[J].稀有金属（英文版）,2006(01):79-83. |
| [4] | Lei Ge;Ran Ran;Zongping Shao.Low-temperature synthesis of La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3-delta) perovskite powder via asymmetric sol-gel process and catalytic auto-combustion[J].CERAMICS INTERNATIONAL,20097(7):2809-2815. |
| [5] | 孟波;郝贵增;秦敬灿;谭小耀.La0.3Sr0.7Fe0.7Cu0.2Mo0.1O3-δ钙钛矿超细陶瓷粉体制备与催化性能研究[J].材料工程,2014(11):50-54. |
| [6] | Tian Changan;Liu Junliang;Guo Cuijing.Auto-combustion synthesis of apatite-type La_(9.33)Ge_6O_(26) ultrafine powder and its characterization[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20081/2(1/2):646-650. |
| [7] | Kharlamova, T;Pavlova, S;Sadykov, V;Lapina, O;Khabibulin, D;Krieger, T;Zaikovskii, V;Ishchenko, A;Salanov, A;Muzykantov, V;Mezentseva, N;Chaikina, M;Uvarov, N;Frade, J;Argirusis, C.Low-temperature synthesis and characterization of apatite-type lanthanum silicates[J].Solid state ionics,200821/26(21/26):1018-1023. |
| [8] | Shanwen Tao;John T. S. Irvine.Preparation and characterization of apatite-type lanthanum silicates by a sol-gel process[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,20017-8(7-8):1245-1258. |
| [9] | 郑颖平;查燕;高文君;孙岳明.La0.9Sr0.1Ga0.8Mg0.2O3-δ的甘氨酸-硝酸盐燃烧法制备和表征[J].中国科技论文在线,2008(4):278-282. |
| [10] | 朱承飞;薛金花;王李.CA配合法制备β-Al2O3固体电解质[J].无机化学学报,2011(12):2377-2382. |
| [11] | 朱承飞;薛金花;王李;王晓钧.EDTA 配合法制备beta-A12O3固体电解质[J].无机化学学报,2010(7):1165-1170. |
| [12] | 张浩;张高校;吴相伟;温兆银.PVP溶胶-凝胶法制备锂稳定Na-β-Al2O3纳米粉体[J].无机材料学报,2013(9):916-920. |
| [13] | 严育通;景燕;姚颖;贾永忠;孙进贺;马军.甘氨酸-硝酸盐燃烧法制备Ca0.3Sr0.7TiO3介电质材料[J].盐湖研究,2008(2):37-40. |
| [14] | 汤根土;骆仲泱;余春江;倪明江;岑可法.溶胶-凝胶低温燃烧合成法制备Sm0.15Gd0.05Ce0.8O1.9纳米粉体[J].硅酸盐学报,2004(9):1121-1127. |
| [15] | Haycock PW.;Ward RCC.;Salter CJ.;Harverson RJ.;Hayes W..THE STRUCTURE OF ION DEFICIENT SODIUM BETA'' ALUMINA[J].Solid state ionics,19951/2(1/2):53-58. |
| [16] | Norhazlin Zainuddin;Natalia Karpukhina;Robert G. Hill;Robert V. Law.A Long-term Study On The Setting Reaction Of Glass Ionomer Cements By ~(27)al Mas-nmr Spectroscopy[J].Dental materials,20093(3):290-295. |
| [17] | Subasri R.;Mathews T.;Sreedharan OM.;Raghunathan VS..Microwave processing of sodium beta alumina[J].Solid state ionics,20031/2(1/2):199-204. |
| [18] | 樊增钊;顾中华.β″-Al2O3喷雾干燥粉料的组成对陶瓷显微结构的影响[J].硅酸盐通报,1999(2):3-5. |
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