Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9829599 | Journal of Crystal Growth | 2005 | 7 Pages |
Abstract
The growth of AlN rod-like crystals, successfully produced via direct nitridation of Al-alloy doped with 5Â wt% Mg and 2Â wt% Si at 1273Â K is predominantly based on capillary mass-transfer phenomena, which occur through a network of micro-channels developed in the empty space among the AlN columnar crystals as well as the hollows inside these crystals. The diffusion of N2 in the liquid alloy is the rate-determining step of the process. Mg and Mg3N2 resulting after nitridation maintain a very low partial pressure of oxygen during the entire process and favour the formation of AlN.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
J. Haibo, K. Chen, Z. Heping, S. Agathopoulos, O. Fabrichnaya, J.M.F. Ferreira,