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Interdiffusion in the Fe2O3-TiO2 system

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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.

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Authors and Affiliations

  1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China

    Zhong-shan Ren, Xiao-jun Hu, Shen-yang Li & Kuo-chih Chou

  2. School of Metallurgical Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Zhong-shan Ren, Xiao-jun Hu, Shen-yang Li & Kuo-chih Chou

  3. School of Materials and Metallurgy, Northeastern University, Shenyang, 110006, China

    Xiang-xin Xue

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  1. Zhong-shan Ren
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  2. Xiao-jun Hu
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  4. Xiang-xin Xue
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Correspondence to Xiao-jun Hu.

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Ren, Zs., Hu, Xj., Li, Sy. et al. Interdiffusion in the Fe2O3-TiO2 system. Int J Miner Metall Mater 20, 273–278 (2013). https://doi.org/10.1007/s12613-013-0723-6

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  • DOI: https://doi.org/10.1007/s12613-013-0723-6

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