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Article
Analysis of interdiffusion of Dy, Nd, and Pr in Mg
Journal of Materials Research
  • Y. Xu, Iowa State University
  • L. Scott Chumbley, Iowa State University
  • G. A. Weigelt, Iowa State University
  • F. C. Laabs, Iowa State University
Document Type
Article
Disciplines
Publication Date
11-1-2001
DOI
10.1557/JMR.2001.0452
Abstract

The diffusion characteristics of Mg–rare-earth diffusion couples were studied. Cylinders of pure Mg and rare earth (Dy, Nd, and Pr) were abutted and annealed at 500 °C for 100 h or 300 h. Point-by-point composition profiles were collected starting in pure Mg, across the diffusion zone, and ending in the pure rare earth, using energy dispersive x-ray spectroscopy with a scanning electron microscope. The intermetallic phases that resulted due to diffusion were identified and compared to existing phase diagrams, for which the data is limited. For each diffusion couple, a plot of concentration versus distance perpendicular to the original plane of contact was obtained and analyzed using the Boltzman–Matano method. The interdiffusion coefficients for each set of phases were then calculated. The results show that diffusion through the intermetallic phases is much slower than is expected in a solid solution.

Comments

This article is from Journal of Materials Research 16 (2001): 3287-3292, doi: 10.1557/JMR.2001.0452. Posted with permission.

Copyright Owner
Materials Research Society
Language
en
Date Available
2014-09-09
File Format
application/pdf
Citation Information
Y. Xu, L. Scott Chumbley, G. A. Weigelt and F. C. Laabs. "Analysis of interdiffusion of Dy, Nd, and Pr in Mg" Journal of Materials Research Vol. 16 Iss. 11 (2001) p. 3287 - 3292
Available at: http://works.bepress.com/l_chumbley/39/