Microstructural assessment of the oxidation behavior of Cu-based metallic glass powder

Gas-atomized Cu-based metallic glass powder was heat-treated in air from below its glass transition temperature (Tg) to well above its crystallization temperature (Tx). Severe oxidation occurred at temperatures > Tx while at temperatures < Tg oxidation was sluggish. The oxidation products were determined and the mechanism is discussed based on the microstructural findings.