• Study of oxidation behaviour of Zr-based bulk amorphous alloy Zr65Cu17.5Ni10Al7.5 by thermogravimetric analyser

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      https://www.ias.ac.in/article/fulltext/boms/024/03/0281-0283

    • Keywords

       

      Oxidation; (bulk) amorphous alloys; TGA.

    • Abstract

       

      The oxidation behaviour of Zr-based bulk amorphous alloy Zr65Cu17.5Ni10Al7.5 has been studied in air environment at various temperatures in the temperature range 591–684 K using a thermogravimetric analyser (TGA). The oxidation kinetics of the alloy in the amorphous phase obeys the parabolic rate law for oxidation in the temperature range 591–664 K. The values of the activation energy and pre-factor as calculated from the Arrhenius temperature dependence of the rate constants have been found to be 1.80 eV and 2.12 × 109 g cm–2.sec–1/2, respectively.

    • Author Affiliations

       

      A Dhawan1 K Raetzke2 F Faupel2 S K Sharma1

      1. Department of Physics, Malaviya Regional Engineering College, Jaipur 302 017, India
      2. Technical Faculty, University of Kiel, Kaiserstr.2, D-24143 Kiel, Germany
    • Dates

       

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