Technique for Preparing Ultrafine Nanocrystalline Bulk Material of Pure Rare-Earth Metals

Authors

  • X. Song,

    1. School of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Ministry of Education, Beijing University of Technology, Beijing 100022, P.R. China
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  • J. Zhang,

    1. School of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Ministry of Education, Beijing University of Technology, Beijing 100022, P.R. China
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  • M. Yue,

    1. School of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Ministry of Education, Beijing University of Technology, Beijing 100022, P.R. China
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  • E. Li,

    1. School of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, P.R. China
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  • H. Zeng,

    1. School of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, P.R. China
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  • N. Lu,

    1. School of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, P.R. China
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  • M. Zhou,

    1. School of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Ministry of Education, Beijing University of Technology, Beijing 100022, P.R. China
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  • T. Zuo

    1. School of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Ministry of Education, Beijing University of Technology, Beijing 100022, P.R. China
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  • This work is supported by the National Natural Science Foundation of China (50401001, 50271001), the Key Project of Science & Technology Innovation Engineering, The Chinese Ministry of Education (705004), the Beijing Natural Science Foundation (2041001), and the Program of Beijing New Star of Science and Technology (2004B04). The authors thank Prof. M. Rettenmayr, from the Friedrich-Schiller-University Jena, for the very helpful discussions. Supporting Information is available online from Wiley InterScience or from the author.

Abstract

original image

Ultrafine nanocrystalline bulk material of pure rare-earth metals has been prepared using a combination of inert gas condensation and spark plasma sintering (see figure). Some of the bulk properties such as the microhardness and specific heat capacity are remarkably improved compared to the conventional polycrystalline material. This new preparation technique enables the preparation and study of a variety of other nanostructured metal materials.

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