Subsolidus Reactions in the System Fe ₂ O ₃ ‐ TiO ₂

Abstract

A study has been made of the binary system Fe 2 O 2 ‐TiO 2 by solid‐state reactions under dry and hydrothermal conditions. Under dry conditions only one binary compound, pseudobrookite (Fe 2 O 3 ‐TiO 2 ), was formed and no evidence of solid solution on either side of this compound at temperatures up to 1200°C. was obtained. The system under these conditions is a simple binary with a single binary compound. Under hydrothermal conditions of 300° C. and 1200 Ib. per sq. in. the system is apparently also binary, with a single unstable compound closely resembling, if not identical with, the naturally occurring mineral arizonite (ferric metatitanate, Fe 2 (TiO 3 ) 3 ).