authors |
Haibo, J; Chen, K; Heping, Z; Agathopoulos, S; Fabrichnaya, O; Ferreira, JMF |
nationality |
International |
journal |
JOURNAL OF CRYSTAL GROWTH |
author keywords |
capillarity; crystal morphology; mass transfer; thermodynamics; growth from melt; alloys; nitrides |
keywords |
MAGNESIUM SILICON ALLOYS; ALUMINUM NITRIDE; AL2O3/METAL COMPOSITES; GROWTH MECHANISMS; OXIDATION; MORPHOLOGIES; WHISKERS; OXIDES |
abstract |
The growth of AIN rod-like crystals, successfully produced via direct nitridation of Al-alloy doped with 5 wt% Mg and 2 wt% Si at 1273 K is predominantly based on capillary niass-transfer phenomena, which occur through a network of micro-channels developed in the empty space among the AIN columnar crystals as well as the hollows inside these crystals. The diffusion of N-2 in the liquid alloy is the rate-determining step of the process. Mg and Mg3N, resulting after nitridation maintain a very low partial pressure of oxygen during the entire process and favour the formation of AIN. (c) 2005 Elsevier B.V. All rights reserved. |
publisher |
ELSEVIER SCIENCE BV |
issn |
0022-0248 |
year published |
2005 |
volume |
281 |
issue |
2-4 |
beginning page |
639 |
ending page |
645 |
digital object identifier (doi) |
10.1016/j.jcrysgro.2005.04.024 |
web of science category |
Crystallography; Materials Science, Multidisciplinary; Physics, Applied |
subject category |
Crystallography; Materials Science; Physics |
unique article identifier |
WOS:000231011600062
|