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

[摘要] The oxidation behaviour of Zr-based bulk amorphous alloy Zr₆₅Cu_17.5Ni₁₀Al_7.5 has been studied in air environment at various temperatures in the temperature range 591â€�??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 591â€�??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 Ã�? 10⁹ g cm^â€�??2.sec^{â€�??1/2}, respectively.

[学科分类] 材料工程

[关键词] Oxidation;(bulk) amorphous alloys;TGA.