This work was supported by the Ministry of Higher Education and Science in Poland, project N N507 505138. The CVD experiments were performed in Research and Development Laboratory for Aerospace Materials in Rzeszow. The rCADiff software was used in calculations (available from authors).
The Growth Kinetics of Nickel Aluminide Coatings by the Bi-velocity Method†
Article first published online: 19 NOV 2012
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Chemical Vapor Deposition
Volume 18, Issue 10-12, pages 267–273, December 2012
How to Cite
Wierzba, B., Danielewski, M., Tkacz-Śmiech, K. and Sieniawski, J. (2012), The Growth Kinetics of Nickel Aluminide Coatings by the Bi-velocity Method. Chem. Vap. Deposition, 18: 267–273. doi: 10.1002/cvde.201206999
- Issue published online: 6 DEC 2012
- Article first published online: 19 NOV 2012
- Manuscript Revised: 22 JUN 2012
- Manuscript Received: 4 MAY 2012
- Al-Ni system;
- Multiphase system;
- Volume continuity equation
In this work we solve the problem of the simultaneous growth and competition of intermediate phases. The crystal lattice as the frame of reference for diffusion is defined, based on the volume continuity equation. It permits the computation of the material velocity in a system in which reactions at several moving interfaces occur. All reactions lead to the lattice shift due to the difference of diffusivities and molar volumes. We simulate the CVD process followed by annealing in a non-oxidizing atmosphere. The computed kinetics and concentration profiles are compared with experimental results.