Diffusion Paths for Interstitial Impurities in Different Polymorphic Modifications of Niobium Silicide Nb5Si3
- Authors: Kuzmina N.A.1, Eremin N.N.2, Marchenko E.I.2, Svetlov I.L.1, Muromtsev N.A.2, Neuman A.V.1, Yakushev D.A.2
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Affiliations:
- All-Russia Scientific Research Institute of Aviation Materials
- Moscow State University
- Issue: Vol 63, No 3 (2018)
- Pages: 319-326
- Section: Crystal Chemistry
- URL: https://journals.rcsi.science/1063-7745/article/view/192413
- DOI: https://doi.org/10.1134/S106377451803015X
- ID: 192413
Cite item
Abstract
Structural models of the α, β, and γ modifications of Nb5Si3 silicides, which are used as a reinforcing phase in composites obtained in situ based on the Nb‒Si system, have been constructed by computer simulation methods. A geometric analysis of unit cells is performed using the H-poisk program to estimate the voids existing in the structures. The results of measuring the number of voids and their sizes are reported. A conclusion about possible diffusion paths of interstitial boron, carbon, nitrogen and oxygen atoms is drawn based on the calculation results, and the solubility of these impurities in the structure of each Nb5Si3 modification is estimated.
About the authors
N. A. Kuzmina
All-Russia Scientific Research Institute of Aviation Materials
Author for correspondence.
Email: viamlab1@mail.ru
Russian Federation, Moscow, 105005
N. N. Eremin
Moscow State University
Email: viamlab1@mail.ru
Russian Federation, Moscow
E. I. Marchenko
Moscow State University
Email: viamlab1@mail.ru
Russian Federation, Moscow
I. L. Svetlov
All-Russia Scientific Research Institute of Aviation Materials
Email: viamlab1@mail.ru
Russian Federation, Moscow, 105005
N. A. Muromtsev
Moscow State University
Email: viamlab1@mail.ru
Russian Federation, Moscow
A. V. Neuman
All-Russia Scientific Research Institute of Aviation Materials
Email: viamlab1@mail.ru
Russian Federation, Moscow, 105005
D. A. Yakushev
Moscow State University
Email: viamlab1@mail.ru
Russian Federation, Moscow
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