Effect of thermal stability of the amorphous substrate on the amorphous oxide growth on Zr-Al-(Cu,Ni) metallic glass surfaces

In the present study, we propose that the glass stability of an amorphous oxide film is highly dependent on the interface stability between the amorphous oxide and the amorphous substrate. The interface stability is closely linked to the thermal stability of the amorphous substrate, which is changed by the chemical composition shift during formation of the oxide layer. Therefore, significant improvement of the oxidation resistance in metallic glass systems can be achieved by controlling the compositional changes underneath the oxide layer.