采用溶胶-凝胶法,以Al(NO3)3·9H2O、正硅酸乙酯(TEOS)为主要原料,分别以草酸、柠檬酸和乙二胺四乙酸钠为络合剂,合成了具有不同微观形貌的莫来石粉体.并运用差热分析(DTA)、X射线衍射(XRD)、红外傅里叶变换分析仪(FFIR)、EDS能谱及扫描电子显微镜(SEM)等对制备的莫来石粉体的物相、形貌和元素组成进行了表征.结果表明:莫来石的开始合成温度在1046℃左右,而实际后处理温度要达到1300℃才能得到结晶良好且为单一物相的莫来石粉体.通过添加不同络合剂,经过煅烧,均得到了物相单一,形貌分别为棒状、棒簇状和花纹状莫来石微晶.
参考文献
| [1] | Sugita Satoshi;Cesar Contreras;Hector Juarez;Alberto Aguilera;Juan Serrato .Homogeneous precipitation and thermal phase transformation of mullite ceramic precursor[J].International journal of inorganic materials,2001(7):625-632. |
| [2] | 张桂敏,王玉成,傅正义,王皓,王为民,张金咏,张清杰.莫来石的低温合成及结构组成变化[J].硅酸盐学报,2008(11):1542-1547. |
| [3] | Schneider H;Sclreuer J;Hildmaana B .Structure and Properties of Mullite-a Review[J].Journal of the European Ceramic Society,2008,28(02):329-344. |
| [4] | Z. Chen;L. Zhang;L. Cheng .Novel method of adding seeds for preparation of mullite[J].Journal of Materials Processing Technology,2005(2):183-187. |
| [5] | Kanzaki S;Tabata H .Sintering and Mechanical Properties of Stoichiometric Mullite[J].Journal of the American Ceramic Society,1985,68(01):C6-C-7. |
| [6] | Zhou MH.;Fonseca AT.;Baptista JL.;Ferreira JMF. .COPRECIPITATION AND PROCESSING OF MULLITE PRECURSOR PHASES[J].Journal of the American Ceramic Society,1996(7):1756-1760. |
| [7] | Kutty TRN.;Nayak M. .Photoluminescence of Eu2+-doped mullite (xAl(2)O(3)center dot ySiO(2); x/y=3/2 and 2/1) prepared by a hydrothermal method[J].Materials Chemistry and Physics,2000(2):158-165. |
| [8] | Olga Burgos-Montes;Rodrigo Moreno .Colloidal behaviour of mullite powders produced by combustion synthesis[J].Journal of the European Ceramic Society,2007(16):4751-4757. |
| [9] | 张亚彬;丁亚平;高积强 等.溶胶凝胶法制备连续莫来石纤维的工艺研究[J].人工晶体学报,2009,38(z1):203-206. |
| [10] | 江伟辉,冯果,刘健敏,谭训彦,于云.溶胶-凝胶法制备钛酸铝薄膜及其抗熔盐腐蚀性能[J].人工晶体学报,2010(04):917-921. |
| [11] | Lee J E;Kim J W;Jung Y G et al.Effects of Precursor pH and Sintering Temperature on Synthesizing and Morphology of Sol-gel Processed Mullite[J].Ceramics International,2002,28(08):935-940. |
| [12] | Tang YF.;Lu YN.;Li AD.;Li XY.;Shi SZ.;Ling ZD. .Fabrication of fine mullite powders by alpha-Al(OH)(3)-SiO2 core-shell structure precursors[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2002(3/4):211-217. |
| [13] | Kong L B;Huang H;Zhang T S et al.Growth of Mullite Whiskers in Mechanochemically Activated Oxides Doped with WO3[J].Journal of the European Ceramic Society,2003,23(12):2257-2264. |
| [14] | Yabin Zhang;Yaping Ding;Jiqiang Gao .Mullite fibres prepared by sol-gel method using polyvinyl butyral[J].Journal of the European Ceramic Society,2009(6):1101-1107. |
| [15] | 孔德强,袁运法,白召军,张冰,陈荣峰.溶胶凝胶法合成莫来石纳米带[J].无机化学学报,2006(02):359-362. |
| [16] | Murugavel P.;Renganathan MK.;Raju AR.;Kalaiselvam M. .Preparation and characterization of sub-micron spherical particles of Al2O3, SiO2 and mullite[J].Materials Chemistry and Physics,1998(3):247-251. |
| [17] | Emilija T;Hrvoje I;Ruediger N et al.Crystallization Kinetics of Mullite Formation in Diphasic Gels Containing Different Alumina Components[J].Journal of the European Ceramic Society,2003,23(09):1465-1475. |
| [18] | Jarkko L;Mika L;Jeesica M R et al.Evolution of Aluminesilicate Structure and Mullite Crystallizatian from Homogeneous Nanoparticulate Solgel Precursor with Organic Additives[J].Journal of the European Ceramic Society,2008,28(09):1749-1742. |
| [19] | Cameron W E .Composition and Cell Dimensions of Mullite[J].American Ceramic Society Bulletin,1977,56:1003-1011. |
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%