通过水热法制备粉体的实验观察到金红石、锐钛矿和α-Al2O3晶体的生长习性．采用配位多面体生长习性法则合理地解释了Ti O2和α-Al2O3的生长习性．其主要结果为α-Al2O3晶体的生长习性为平板{0001}，其各晶面的生长速度为：V｛0001 }＜V｛1123}
The observed growth habit of TiO2, α-Al2 O3 crystals observed under hydrothermal conditions were successfully explained by the coordination polyhedron rule concerning growth habit. It is concluded that the habit of α-Al2 O3 crystal is the hexagonal platy {0001}, and the relationship of growth rate of various faces is: V{0001} ＜ V{1123} ＜ V{0112} ＜ V{1120} ＜ V{1010}; the growth habit of rutile (TiO2) crystal is elongated prismatic form, and the relationship of growth rate of various faces is: V<110> ＜ V<100> ＜ V<101> ＜ V<001> ＜ V<111>; the growth habit of anatase (TiO2) crystal is a tetrahedron, and the relationship of growth rate of various faces is:V＜010＞ = V＜001＞ ＞ V＜010＞ ＞ V＜111＞. These results were compared with previous studies based on PBC theory.
参考文献
| [1] | Shieyuki Somiya, Khishinuma. Bull. Mat. Sci., 1995, 18 (6) : 811-818. |
| [2] | Donnay J D H, Harker D. Amer. Mineral, 1937, 22, 446-467. |
| [3] | Hartman P, Perdok W G. Acta Cryst., 1955, 8: 525-529. |
| [4] | 仲维卓,刘光照,等.中国科学(B),1994,24(4)：394 |
| [5] | Li Wen-jun, Shi Er-wei, Zhong Wei-zhuo. Journal of Crystal Growth, 1999. (to be published) |
| [6] | Sunagawa I. ed. Morphology of Crystals. Tokyo: Terra Scientific Publishing Company, 1987, 309-310 |
| [7] | Crystal Growth: An Introduction. Hartman P, ed. London: North-Holland Publishing CompanyAmsterdam or North-Holland Publishing Cbmpany, LTD. 1973. 384-385 |
| [8] | Watanabe K. Journal of Crystal Growth, 1983, 65: 568-575. |
| [9] | Hartman P. Journal of Crystal Growth, 1980, 49: 166-170. |
| [10] | Mackrodt W C, Davey R J, Black S N. Journal of Crystal Growth, 1987, 80: 441-446. |
| [11] | Hartman P. Journal of Crystal Growth, 1989, 96: 667-672. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%