Recent developments in morphological control of α-Al2O3 particles synthesized in 1,4-butanediol solution

被引:16
作者
Adair, JH [1 ]
Cho, SB
Bell, NS
Perrotta, AJ
机构
[1] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA
[2] Penn State Univ, Inst Mat Res, University Pk, PA 16802 USA
关键词
alpha-alumina; 1,4-butanediol; morphology; growth; habit modification;
D O I
10.1081/DIS-100105201
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Direct precipitation of metal oxides from high boiling point organic solvents presents an alternative to wholly aqueous hydrothermal material synthesis routes. In the current study, reaction conditions to control particle size and shape of alpha -alumina, precipitated from 1,4-butanediol solutions are described. Synthesis variables including reaction time, stirring speed, amount of methanol, and solid loading have a strong effect on the size and shape of alpha -alumina synthesized in 1,4-butanediol solutions conditions to prepare alpha -alumina crystals with different habits including circular platelets, hexagonal platelets, hexagonal platelets with habit modifications on the edges, dodecahedra, polyhedra with 14 faces, polyhedra with 20 faces, hexagonal prisms, and hexagonal prisms with habit modifications on the edges are presented. Possible growth mechanisms of alpha -Al2O3 particles in 1,4-butanediol solution are proposed based on theoretical shape and atomic surface structure generated with programs SHAPE((C)) and ATOMS((C)). The results of this study indicate that it is possible to control the morphology of synthesized alpha -alumina particles by controlling the process conditions, and theoretical predictions of crystal shapes can be reconciled to the morphology of the experimentally synthesized particles.
引用
收藏
页码:143 / 165
页数:23
相关论文
共 62 条
[1]  
ABE K, 1991, CERAMIC T, V22, P15
[2]  
ABE K, 1991, CERAMIC POWDER SCI, V4, P15
[3]  
[Anonymous], 1989, HYDROTHERMAL GROWTH
[4]  
BEAL KC, 1987, ADV CERAMICS, P33
[5]   Adsorbate effects on glycothermally produced α-alumina particle morphology [J].
Bell, NS ;
Adair, JH .
JOURNAL OF CRYSTAL GROWTH, 1999, 203 (1-2) :213-226
[6]  
Bell NS, 1998, J AM CERAM SOC, V81, P1411, DOI 10.1111/j.1151-2916.1998.tb02498.x
[7]  
BENNETT A, 1965, CRYSTALS PERFECT IMP, P3
[8]   CRYSTALLIZATION MECHANISMS IN SOLUTION [J].
BOISTELLE, R ;
ASTIER, JP .
JOURNAL OF CRYSTAL GROWTH, 1988, 90 (1-3) :14-30
[9]  
BOISTELLE R, 1976, IND CRYSTALLIZATION, P203
[10]   Morphological forms of alpha-alumina particles synthesized in 1,4-butanediol solution [J].
Cho, SB ;
Venigalla, S ;
Adair, JH .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1996, 79 (01) :88-96