Open AccessExothermic synthesis and consolidation of single-phase ultra-high temperature composite Ta4ZrC5
Author(s) -
В. А. Щербаков,
A. N. Gryadunov,
С. Г. Вадченко,
М. И. Алымов
Publication year - 2019
Publication title -
doklady akademii nauk. rossijskaâ akademiâ nauk
Language(s) - English
Resource type - Journals
ISSN - 0869-5652
DOI - 10.31857/s0869-56524882153-156
Subject(s) - materials science , exothermic reaction , composite number , consolidation (business) , tantalum , composite material , ceramic , porosity , ceramic composite , zirconium , metallurgy , thermodynamics , physics , accounting , business
The paper presents the experimental results of possibility obtaining ultra-high temperature composite Ta4ZrC5 using a single-stage method. The method is based on the use of exothermic synthesis of refractory compounds by electro-thermal explosion (ETE) and their consolidation under conditions of quasi-isostatic compression. The effect of mechanical activation of the reaction mixture of tantalum, zirconium and carbon powders on the formation of the phase composition of the ceramic composite Ta4ZrC5 was studied. The conditions for obtaining a single-phase ultra-high temperature composites had were determined. The composites were prepared with the average particle size of 1-2 µm and a residual porosity of 8-10%.