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Thermodynamic Assessment of the Nb-Si-Ta System

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Abstract

The Nb-Si-Ta ternary system is thermodynamically assessed using the CALculation of PHAse Diagram approach based on the experimental measurements of the isothermal sections at 1100, 1200, and 1300 °C. The parameters for the thermodynamic assessment of all the phases in the system are optimized, following the reported literatures of the three relevant binaries Nb-Si, Nb-Ta and Si-Ta systems. The liquidus projection was calculated accordingly from the currently obtained thermodynamic description of the Nb-Si-Ta system. Comparison between the calculated results and the experimental investigations shows that the present modeling can finely describe the experimental information of the Nb-Si-Ta ternary phase diagram.

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Acknowledgments

This work was supported by the National Key R&D Program of China (Grant No. 2017YFB0702901). The support from the Ministry of Science and Technology of China (Grant No. 2014DFA53040) and National Natural Science Foundation of China (Grant Nos. 51771158 and 51571168). The support from Aviation Industry Corporation of China.

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Authors and Affiliations

  1. College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen, People’s Republic of China

    X. J. Liu, H. Luo, Y. Lu, J. J. Han, J. Li, Y. H. Guo, Y. X. Huang & C. P. Wang

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  1. X. J. Liu
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  2. H. Luo
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  3. Y. Lu
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  4. J. J. Han
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  8. C. P. Wang
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Correspondence to C. P. Wang.

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Liu, X.J., Luo, H., Lu, Y. et al. Thermodynamic Assessment of the Nb-Si-Ta System. J. Phase Equilib. Diffus. 38, 897–905 (2017). https://doi.org/10.1007/s11669-017-0596-x

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  • DOI: https://doi.org/10.1007/s11669-017-0596-x

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