Synthesis of a Composite Material via Combustion of Titanium and Boron Powders and a Mechanically Activated Aluminum + Nickel Mixture

— Self-propagating high-temperature synthesis has been performed in a heterogeneous Ni–Al–Ti–B model system consisting of Al + Ni composite particles in the form of granules produced by mechanical activation and a Ti + 2B mixture of titanium and boron powders. Two main chemical reactions occurred in...

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Bibliographic Details
Published in:Inorganic materials 2022, Vol.58 (2), p.133-141
Main Authors: Ponomarev, M. A., Loryan, V. E., Kochetov, N. A., Shchukin, A. S.
Format: Article
Language:English
Subjects:
Aluminum
Boron
Cermets
Chemical reactions
Chemistry
Chemistry and Materials Science
Combustion
Composite materials
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Mixtures
Nickel aluminides
Particulate composites
Self propagating high temperature synthesis
Titanium
Titanium diboride
Wave fronts
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Summary:— Self-propagating high-temperature synthesis has been performed in a heterogeneous Ni–Al–Ti–B model system consisting of Al + Ni composite particles in the form of granules produced by mechanical activation and a Ti + 2B mixture of titanium and boron powders. Two main chemical reactions occurred in the combustion wave front: between aluminum and nickel in the composite particles and between titanium and boron in the mixture around the composite particles. The combustion process resulted in the formation of a titanium diboride matrix in which small pores were filled with molten nickel aluminides, and the composite particles gave way to pores reproducing their shape. The porous metal–ceramic synthesis product had a structure of composite material, with interpenetrating diboride and intermetallic skeletons.
ISSN:0020-1685
1608-3172
DOI:10.1134/S002016852202011X