Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1502450 | Scripta Materialia | 2008 | 4 Pages |
Abstract
Nitridation is an important reaction which has never been investigated for Al-based quasicrystals. Here we show that AlCuFeB quasicrystalline particles undergo phase transformations upon annealing at high temperature in pure nitrogen. A thick nitride layer grows on the surface of the particles, and Al depletion in the bulk results in transformation of the quasicrystalline phase first into the cubic β-phase and then into the monoclinic λ-phase. The kinetics of this transformation is much faster than that of oxidation.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
S. Kenzari, D. Bonina, J.M. Dubois, V. Fournée,