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Title: Priority compositions of boron carbide crystals obtained by self-propagating high-temperature synthesis

Splitting of reflections from boron carbide has been found for the first time by an X-ray diffraction study of polycrystalline mixture of boron carbide B{sub 15–x}C{sub x}, (1.5 ≤ x ≤ 3) and its magnesium derivative C{sub 4}B{sub 25}Mg{sub 1.42}. An analysis of reflection profiles shows that this splitting is due to the presence of boron carbide phases of different compositions in the sample, which are formed during crystal growth. The composition changes from B{sub 12.9}C{sub 2.1} to B{sub 12.4}C{sub 2.6}.
Authors:
; ; ;  [1]
  1. Russian Academy of Sciences, Institute of Structural Macrokinetics and Materials Science (Russian Federation)
Publication Date:
OSTI Identifier:
22472150
Resource Type:
Journal Article
Resource Relation:
Journal Name: Crystallography Reports; Journal Volume: 60; Journal Issue: 5; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BORON CARBIDES; CRYSTAL GROWTH; MAGNESIUM COMPOUNDS; PHASE STABILITY; PHASE STUDIES; PHASE TRANSFORMATIONS; POLYCRYSTALS; REFLECTION; SYNTHESIS; X-RAY DIFFRACTION