本文采用Al2(SO4)3·18H2O和SiO2为原料,以K2SO4,Na2SO4为熔盐,用熔盐法合成了针状莫来石晶体.研究了不同合成温度、熔盐用量和保温时间对合成莫来石晶体的影响,分析了熔盐法合成针状莫来石的反应机理.研究结果表明:以K2SO4为熔盐,熔盐与反应物总量质量比为1: 1,合成温度为1000 ℃,保温时间为3 h时可以合成针状莫来石晶体,针状莫来石的生成符合L-S液固生长机理.
参考文献
| [1] | Ramón Torrecillas;José M. Calderón .Suitability of Mullite for High Temperature Applications[J].Journal of the European Ceramic Society,1999(13/14):2519-2528. |
| [2] | Rita Baranwal;Maria P.Villar;Rafael Garcia .Flame Spray Pyrolysis of Precursors as a Route to Nano-mullite Powder: Powder Characterization and Sintering Behavior[J].Journal of the American Ceramic Society,2001(5):951-961. |
| [3] | 魏坤 .莫来石耐火材料及稀土的应用[J].稀有金属与硬质合金,1997,130(03):45-49. |
| [4] | Viswabaskaran V;Gnanam F D;Balasubrananian M .Mullite from Clay-reactive Alumina for Insulating Substrate Application[J].Applied Clay Science,2005,25(l-2):29-35. |
| [5] | 陆际清,田杰谟.高性能陶瓷材料在汽车发动机中的应用[J].车用发动机,2000(03):12-15. |
| [6] | 吕林 .无水冷发动机用莫来石基陶瓷组合活塞研制[J].武汉交通科技大学学报,1999,23(04):351-354. |
| [7] | Medvedovski E .Silicon Carbide-based Wear-Resistant Ceramics[J].Interceramic,2001,50(02):104-108. |
| [8] | Boceaccini A R;Bueker M;Kahlil T K et al.Fabrication of Mullite Ceramics by Rotary Forging and Pressureless Sintering[J].Journal of the European Ceramic Society,1999,19(15):2613-2618. |
| [9] | 淡家琪;金玉俊;王金 等.用氧化铝导熔合成高纯电熔莫来石[P].CN:85108307,1987-06-03. |
| [10] | Shunkichi Ueno;D. Doni Jayaseelan;Naoki Kondo .Water vapor corrosion of mullite containing small amount of sodium[J].Ceramics International,2005(1):177-180. |
| [11] | 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. |
| [12] | Esther Ruiz de Sola;Francisco Jose Torres;Javier Alarcon .Thermal evolution and structural study of 2:1 mullite from monophasic gels[J].Journal of the European Ceramic Society,2006(12):2279-2284. |
| [13] | Hrvoje Ivankovice;Emilija Tkalcec;Ruediger Rein .Microstructure and high temperature 4-point bending creep of sol-gel derived mullite ceramics[J].Journal of the European Ceramic Society,2006(9):1637-1646. |
| [14] | Moyer J R;Hughes N N .A Catalytic Process for Mullite Whiskers[J].Journal of the American Ceramic Society,1994,77(04):1083-1086. |
| [15] | Kong I R;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,2003,23:2257-2264. |
| [16] | J.T. Zeng;K.W. Kwok;H.L.W. Chan .K_xNa_(1-x)NbO_3 powder synthesized by molten-salt process[J].Materials Letters,2007(2):409-411. |
| [17] | Akdogan E K;Brennan R E;Allahverdi M et al.Effects of Molten Salt Synthesis (MSS) Parameters on the Morphology of Sr3Ti2O7 and SrTiO3 Seed Crystals[J].Journal of Electroceramics,2006,16:159-165. |
| [18] | 李雪冬 .熔盐法合成莫来石粉体和氧化锆——莫来石复合粉体研究[D].武汉科技大学,2007. |
| [19] | Guretskii S A;Ges A P;Zhigunov D I et al.Growth of Lithium Triborate Single Crystals from Molten Salt Solution under Various Temperature Gradients[J].Journal of Crystal Growth,1995,156:410-412. |
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