首先采用共沉淀法制备钇铝石榴石前驱体,然后以乙醇-水混合溶剂作为反应介质,在较低的温度(300℃)和压力(10MPa)下,制备分散性好的钇铝石榴石纳米粉体.并借助XRD,TEM,BET与IR等测试手段,对所制备样品的性能进行了表征.实验结果表明,在适当的醇-水比条件下可在较低的温度和压力下制备纯相的YAG纳米粉体,其粒度大约为20nm,分散性良好.并对YAG的醇-水热形成机理进行了初步探讨.
Polycrystalline nano-sized powders of aluminium yttrium garnet (YAG) were synthesized by a mixed
solvo-thermal method at low temperature(300℃) and low pressure (10MPa). The phase transformation, composition and micro-structural features
of the final products were characterized by X-ray powder diffraction, IR, BET, and TEM techniques. X-ray powder diffraction patterns indicated that pure
phase YAG powder was synthesized in the mixed solvent at lower temperature. The transmission electron microscopy (TEM) revealed the averaged size of
crystallite was 20nm and well dispersed. The mechanism of YAG formation in the hydrothermal condition was investigated based on the results.
参考文献
| [1] | Mculder C A, De With G. Solid State Ionics, 1985, 16: 81--86. [2] Sekita M, Haneda H, Yanagtai T, et al. J. Appl Phys., 1991, 69: 3709--3718. [3] With G. De, H.J.A., Digk. Van. Mater. Res. Bull, 1984, 19: 1969--1974. [4] Kang Y C, Lenggoro I W, Park S B, et al. J. Phys. Chem. Sol., 1999, 60: 1855--1858. [5] Abell J S, Harries I R, Cockayne B, et al. J. Mater. Sci., 1974, 9 (4): 527--537. [6] Veith Michael, Mathur Sanjay. J. Mater. Chem., 1999, 9: 3069--3079. [7] P Vaqueiro P, Lopequea M A. Chem. Mater., 1997, 9: 2836--2841. [8] Kang Y C, Lenggoro I W, Park S B, et al. Mater. Lett., 1999, 39: 138--141. [9] Yanagitani T, Ygji H, Hiro Y. Japan Patent, 1998, 10-101411. [10] Li Ji-Gang, Takayasu Ikegami, Lee Jong-Heun, et al. J. Euro. Ceram, 2000, 20: 2395--2405. [11] Inoue Masashi, Otsu Hiroyuti, Kominami Hiroshi, et al. J. Am. Ceram. Soc., 1991, 74 (6): 1452--1454. [12] Hakuta Yukiya, Seino Kazuei, Ura Haruo, et al. J. Mater. Chem., 1999, 9: 2671--2674. [13] 仲维卓, 华素坤. 晶体生长形态学. 北京: 科学出版社, 1999. 279--281. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%