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Title: Diffusion Paths for Interstitial Impurities in Different Polymorphic Modifications of Niobium Silicide Nb{sub 5}Si{sub 3}

Abstract

Structural models of the α, β, and γ modifications of Nb{sub 5}Si{sub 3} 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 Nb{sub 5}Si{sub 3} modification is estimated.

Authors:
 [1]; ;  [2];  [1];  [2];  [1];  [2]
  1. All-Russia Scientific Research Institute of Aviation Materials (Russian Federation)
  2. Moscow State University (Russian Federation)
Publication Date:
OSTI Identifier:
22758252
Resource Type:
Journal Article
Journal Name:
Crystallography Reports
Additional Journal Information:
Journal Volume: 63; Journal Issue: 3; Other Information: Copyright (c) 2018 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7745
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; BORON; CARBON; COMPUTERIZED SIMULATION; DIFFUSION; GEOMETRY; IMPURITIES; INTERSTITIALS; MODIFICATIONS; NIOBIUM SILICIDES; NITROGEN; OXYGEN; STRUCTURAL MODELS; VOIDS

Citation Formats

Kuzmina, N. A., E-mail: viamlab1@mail.ru, Eremin, N. N., E-mail: neremin@geol.msu.ru, Marchenko, E. I., Svetlov, I. L., Muromtsev, N. A., Neuman, A. V., and Yakushev, D. A. Diffusion Paths for Interstitial Impurities in Different Polymorphic Modifications of Niobium Silicide Nb{sub 5}Si{sub 3}. United States: N. p., 2018. Web. doi:10.1134/S106377451803015X.
Kuzmina, N. A., E-mail: viamlab1@mail.ru, Eremin, N. N., E-mail: neremin@geol.msu.ru, Marchenko, E. I., Svetlov, I. L., Muromtsev, N. A., Neuman, A. V., & Yakushev, D. A. Diffusion Paths for Interstitial Impurities in Different Polymorphic Modifications of Niobium Silicide Nb{sub 5}Si{sub 3}. United States. doi:10.1134/S106377451803015X.
Kuzmina, N. A., E-mail: viamlab1@mail.ru, Eremin, N. N., E-mail: neremin@geol.msu.ru, Marchenko, E. I., Svetlov, I. L., Muromtsev, N. A., Neuman, A. V., and Yakushev, D. A. Tue . "Diffusion Paths for Interstitial Impurities in Different Polymorphic Modifications of Niobium Silicide Nb{sub 5}Si{sub 3}". United States. doi:10.1134/S106377451803015X.
@article{osti_22758252,
title = {Diffusion Paths for Interstitial Impurities in Different Polymorphic Modifications of Niobium Silicide Nb{sub 5}Si{sub 3}},
author = {Kuzmina, N. A., E-mail: viamlab1@mail.ru and Eremin, N. N., E-mail: neremin@geol.msu.ru and Marchenko, E. I. and Svetlov, I. L. and Muromtsev, N. A. and Neuman, A. V. and Yakushev, D. A.},
abstractNote = {Structural models of the α, β, and γ modifications of Nb{sub 5}Si{sub 3} 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 Nb{sub 5}Si{sub 3} modification is estimated.},
doi = {10.1134/S106377451803015X},
journal = {Crystallography Reports},
issn = {1063-7745},
number = 3,
volume = 63,
place = {United States},
year = {2018},
month = {5}
}