Phase Formation and Interaction between Nanosized Nonstoichiometric Silicon Carbide and Iron Oxide

  

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2012, #05/06
http://www.materials.kiev.ua/article/1035

Abstract

The interaction between nanosized powder of a solid solution of carbon in silicon carbide and iron oxide (as iron oxide pigment and sintered and atomized iron ore concentrate) in high-temperature heating is studied. The quantitative phase composition of the resulting products is analyzed. Potential reactions of interaction between silicon carbide and iron oxide are examined. It is established that the (SiC–C)–Fe2O3 powder mixtures interact to produce a heterophase structure by the reduction of iron and the formation of silicides (ε-FeSi, Fe2Si, Fe3Si, Fe5Si3), carbides (Fe3C, Fe7C3), and iron (α-Fe) as homogeneous microstructure of fine particles.


HIGH-CARBON IRON CARBIDE, IRON OXIDE, IRON SILICIDE, SINTERED CONCENTRATE OF IRON ORE, SOLID SOLUTION OF CARBON IN SILICON CARBIDE