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Isothermal Section of Al-Si-Ce Ternary System at 1073 K

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Abstract

The phase equilibria in the Al-Si-Ce ternary system at 1073 K is investigated by means of x-ray diffraction and scanning electron microscope coupled with energy dispersive spectroscopy. There exist 12 three-phase regions exist in this system and one can be deduced. One ternary compound T (Ce(Al x Si1−x )2) found in the isothermal section at 1073 K has the LaPtSi structure with a lattice parameter a = 0.4242 nm which composition span ranges from 32.1-47.8 at.%Al, 17.9-33.7 at.% Si, 33.4-34.0 at.% Ce. The maximum solubility of Al (in at.%) in CeSi2−α, CeSi, Ce5Si4, Ce3Si2 and Ce5Si3 at 1073 K is 29.3, 23.8, 2.8, 13.6 and 6.5 respectively, and the maximum solubility of Si (in at.%) in Al4Ce, Al3Ce, Al2Ce and AlCe at 1073 K is 1.4, 1.7, 1.8 and 2.1 respectively.

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Acknowledgments

This investigation is supported by the Ph.D. Programs Foundation of Ministry of Education of China (20134301110006).

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Authors and Affiliations

  1. School of Mechanical Engineering, Xiangtan University, Hunan, 411105, P. R. China

    Yongping Li, Zhi Li, Yongxiong Liu, Xinming Wang, Manxiu Zhao & Fucheng Yin

  2. Key Laboratory of Materials Design and Preparation Technology of Hunan Province, Xiangtan University, Hunan, 411105, P. R. China

    Yongping Li, Zhi Li, Yongxiong Liu, Xinming Wang, Manxiu Zhao & Fucheng Yin

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  1. Yongping Li
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Correspondence to Zhi Li.

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Li, Y., Li, Z., Liu, Y. et al. Isothermal Section of Al-Si-Ce Ternary System at 1073 K. J. Phase Equilib. Diffus. 35, 276–283 (2014). https://doi.org/10.1007/s11669-014-0306-x

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  • DOI: https://doi.org/10.1007/s11669-014-0306-x

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