Interdiffusion in the Fe2O3-TiO2 system

Zhong-shan Ren; Xiao-jun Hu; Shen-yang Li; Xiang-xin Xue; Kuo-chih Chou

doi:10.1007/s12613-013-0723-6

Volume 20 Issue 3

Mar. 2013

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International Journal of Minerals, Metallurgy and Materials > 2013 > 20(3): 273-278. > DOI: 10.1007/s12613-013-0723-6

Zhong-shan Ren, Xiao-jun Hu, Shen-yang Li, Xiang-xin Xue, and Kuo-chih Chou, Interdiffusion in the Fe₂O₃-TiO₂ system, Int. J. Miner. Metall. Mater., 20(2013), No. 3, pp.273-278. https://dx.doi.org/10.1007/s12613-013-0723-6

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Interdiffusion in the Fe₂O₃-TiO₂ system

Zhong-shan Ren^1,2),
Xiao-jun Hu^1,2), ,,
Shen-yang Li^1,2),
Xiang-xin Xue³⁾ and
Kuo-chih Chou^1,2)

Author Affilications

State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China
School of Metallurgical Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
School of Materials and Metallurgy, Northeastern University, Shenyang, 110006, China

Funds:

supported by the National Natural Science Foundation of China (No. 51090384).

Received: 27 March 2012; Revised: 10 June 2012; Accepted: 11 June 2012; Available Online: 09 June 2021

Graphical Abstract

Abstract

Abstract

Interdiffusion in the Fe₂O₃-TiO₂ system was investigated by the diffusion couple method in the temperature range of 1323 to 1473 K. The diffusion concentration curves of Ti⁴⁺ cations were obtained by electron probe microanalysis, according to which the Boltzmann-Matano method optimized by Broeder was used to calculate the interdiffusion coefficients. The interdiffusion coefficients almost increased linearly with the mole fraction of Ti⁴⁺ cations increasing, and they were in the range of 10⁻¹²–10⁻¹¹cm²·s⁻¹. The increase of temperature could also lead to the increase of the interdiffusion coefficients at a constant concentration of Ti⁴⁺ cations. It was also found that the thickness growth of the diffusion layer obeyed the parabolic rate law.
- interdiffusion,
- titanium dioxide,
- iron oxides,
- diffusion couples,
- electron probe microanalysis

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