Abstract
Amorphous metallic films of have been deposited onto glass and quartz substrates by the magnetron sputter quenching technique. The amorphous nature of the as‐deposited films was confirmed by their diffuse x‐ray diffraction patterns. The crystallization temperature of the as‐deposited films was 590°C, according to the differential scanning calorimetry studies. Surface texture and cross‐sectional features of the coatings were examined by scanning electron microscopy. Electron microprobe analysis was used to determine the chemical composition of the films. Chemical compositional uniformity of the as‐deposited amorphous metallic films was verified by secondary ion mass spectrometry. As‐deposited films exhibited microhardness of the order of 600–850 HV. Kinetics of corrosion of the alloy films in solution has been studied by potentiodynamic and galvanostatic techniques. As‐deposited amorphous films exhibited corrosion current density three orders of magnitude less than the corrosion current density of 304 stainless steel in solution. A reaction mechanism at the corrosion potential is proposed.
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