Solid-state reaction kinetics of the system CaO-FeO

Hiroyuki Fukuyama; Khalid Hossain; Kazuhiro Nagata

doi:10.1007/s11663-002-0010-9

Solid-state reaction kinetics of the system CaO-FeO

Hiroyuki Fukuyama, Khalid Hossain, Kazuhiro Nagata

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

The solid-state reaction mechanisms of the CaO-FeO system have been studied by a diffusion couple method in the temperature range of 1073 to 1273 K, under controlled oxygen-partial pressures. The interdiffusivities and intrinsic diffusivities of Ca²⁺ and Fe²⁺ have been determined in the limited FeO solid-solution range. Based on the obtained results, a solid-state reaction model of the system has been developed, taking account of the formation of the Ca₂Fe₂O₅ phase. According to the model, the diffusivities of Fe³⁺ in the Ca₂Fe₂O₅ phase have been estimated at 1273 K.

Original language	English
Article number	10
Pages (from-to)	257-264
Number of pages	8
Journal	Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume	33
Issue number	2
DOIs	https://doi.org/10.1007/s11663-002-0010-9
Publication status	Published - 2002
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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10.1007/s11663-002-0010-9

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abstract = "The solid-state reaction mechanisms of the CaO-FeO system have been studied by a diffusion couple method in the temperature range of 1073 to 1273 K, under controlled oxygen-partial pressures. The interdiffusivities and intrinsic diffusivities of Ca2+ and Fe2+ have been determined in the limited FeO solid-solution range. Based on the obtained results, a solid-state reaction model of the system has been developed, taking account of the formation of the Ca2Fe2O5 phase. According to the model, the diffusivities of Fe3+ in the Ca2Fe2O5 phase have been estimated at 1273 K.",

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AU - Hossain, Khalid

AU - Nagata, Kazuhiro

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AB - The solid-state reaction mechanisms of the CaO-FeO system have been studied by a diffusion couple method in the temperature range of 1073 to 1273 K, under controlled oxygen-partial pressures. The interdiffusivities and intrinsic diffusivities of Ca2+ and Fe2+ have been determined in the limited FeO solid-solution range. Based on the obtained results, a solid-state reaction model of the system has been developed, taking account of the formation of the Ca2Fe2O5 phase. According to the model, the diffusivities of Fe3+ in the Ca2Fe2O5 phase have been estimated at 1273 K.

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Solid-state reaction kinetics of the system CaO-FeO

Abstract

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