TiC–Fe Powders by Coupled SHS Reactions: An Overview

The application of the SHS reactions yielding TiC coupled with the reduction of Fe from iron oxide to preparation of TiC–Fe powders from plain and granulated green mixtures was overviewed with special emphasis on (Fe 2 O 3 + 2Al)–(Ti + C) ( I ) and (Fe 2 O 3 + 3C)–(Ti + C) ( II ) compound mixtures....

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Bibliographic Details
Published in:International journal of self-propagating high-temperature synthesis 2019, Vol.28 (1), p.10-17
Main Authors: Amosov, A. P., Samboruk, A. R., Yatsenko, I. V., Yatsenko, V. V.
Format: Article
Language:English
Subjects:
Abrasion resistance
Abrasive wear
Abrasives
Aluminothermic reduction
Aluminum oxide
Carbothermic reactions
Cermets
Chemistry and Materials Science
Energy conservation
Granulation
Iron aluminides
Iron oxides
Materials Science
Protective coatings
R&D
Research & development
Titanium carbide
Wear resistance
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Summary:The application of the SHS reactions yielding TiC coupled with the reduction of Fe from iron oxide to preparation of TiC–Fe powders from plain and granulated green mixtures was overviewed with special emphasis on (Fe 2 O 3 + 2Al)–(Ti + C) ( I ) and (Fe 2 O 3 + 3C)–(Ti + C) ( II ) compound mixtures. In case I of aluminothermic reduction, green (Ti + C) + x (Fe 2 O 3 + 2Al) charges were prepared as a mixture of granules prepared separately from thermite (Fe 2 O 3 + 2Al) and carbide (Ti + C) blends. In case II of carbothermic reduction, green (Ti + C) + x (Fe 2 O 3 + 3C) mixtures were used without preliminary granulation. In both cases, combustion in an open reactor proceeded steadily without material splashing and yielded highly porous Fe(Al)–Fe 3 Al–Al 2 O 3 –TiC or TiC–Fe cermets that can be easily grinded to get abrasive powders. The above reactions are energy saving, technically simple, cost effective, and rather promising for R & D of industrial-scale processes to fabricate powdered TiC–Fe cermets to be used as abrasive materials, wear-resistant coatings, and catalysts.
ISSN:1061-3862
1934-788X
DOI:10.3103/S1061386219010023