TiC–Fe Powders by Coupled SHS Reactions: An Overview

• 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
• ISSN: 1061-3862; 1934-788X
• DOI: 10.3103/S1061386219010023

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.