(Cr2/3Ti1/3)3AlC2 and (Cr5/8Ti3/8)4AlC3: New MAX-phase Compounds in TiCrAlC System

Authors

  • Zhimou Liu,

    1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China
    2. University of Chinese Academy of Sciences, Beijing, China
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  • Liya Zheng,

    1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China
    2. University of Chinese Academy of Sciences, Beijing, China
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  • Luchao Sun,

    1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China
    2. University of Chinese Academy of Sciences, Beijing, China
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  • Yuhai Qian,

    1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China
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  • Jingyang Wang,

    1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China
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  • Meishuan Li

    Corresponding author
    1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China
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Abstract

Two new MAX compounds, (Cr2/3Ti1/3)3AlC2 and (Cr5/8Ti3/8)4AlC3, were successfully synthesized by hot-pressing elemental powders at 1500°C for 1 h under 30 MPa in a flowing argon atmosphere. Their crystal structures were indentified and characterized by X-ray diffraction and transmission electron microscopy analysis. (Cr2/3Ti1/3)3AlC2 and (Cr5/8Ti3/8)4AlC3 have the same crystal structures with the well-characterized Ti3AlC2 and Ti4AlN3, respectively.

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