Solid–Solid Phase Transformation During the Reduction of Titanium Dioxide (Anatase) to Produce High‐Grade Titanium Powder

Abstract

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Microstructural evolution and interfacial reactions between Ti and ZrO2/CaTiO3 composites

“…However, Ti easily diffused into the composites and reacted with TiO 2 to form Ti 2 O according to Equation () 33 . CaTiO 3 destabilized and decomposed into CaO and TiO 2 at a reducing environment (Equation ) 34,35 . CaO did not occur in the 3Z7CT and 5Z5CT composites near the interface because the CaO expelled in this region dissolved considerable Ti, which is attributable to the negligible solubility of Ca in Ti.…”

“…33 CaTiO 3 destabilized and decomposed into CaO and TiO 2 at a reducing environment (Equation 7). 34,35 CaO did not occur in the 3Z7CT and 5Z5CT composites near the interface because the CaO expelled in this region dissolved considerable Ti, which is attributable to the negligible solubility of Ca in Ti. In the ZrO 2 phase (Equation 4), Zr and O elements quickly dissolved into the Ti side and Ti 2 O phase.…”