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Uranium-Platinum System.

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    This study details the uranium-platinum phase diagram, identifying four intermetallic compounds and two eutectics. Platinum significantly alters uranium

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    Area of Science:

    • Materials Science
    • Metallurgy
    • Physical Chemistry

    Background:

    • Understanding binary alloy phase diagrams is crucial for materials development.
    • The uranium-platinum system is of interest for potential applications in nuclear materials and catalysis.

    Purpose of the Study:

    • To construct the phase diagram of the uranium-platinum system.
    • To identify intermetallic compounds, eutectic points, and solubility limits.
    • To investigate the effect of platinum on uranium's phase transformations.

    Main Methods:

    • Thermal analysis
    • Metallographic examination
    • X-ray diffraction

    Main Results:

    • Four intermetallic compounds were identified: UPt, UPt2, UPt3, and UPt5.
    • Two eutectic points were determined at 1,005°C (12 a/o Pt) and 1,345°C (87.5 a/o Pt).
    • Maximum solubilities were found to be 4.5 a/o U in Pt and 5 a/o Pt in gamma-U.
    • Platinum addition lowered the gamma-beta and beta-alpha uranium transformations.

    Conclusions:

    • The uranium-platinum system exhibits complex phase behavior with distinct intermetallic phases.
    • The determined phase diagram provides essential data for understanding and utilizing uranium-platinum alloys.
    • Platinum's influence on uranium's allotropic transformations is significant.