Abstract
The addition of noble metals to Cr-based amorphous alloys can dramatically improve their corrosion resistance. The results of x-ray photoemission spectroscopy and cathodic polarization measurements show that the noble metals concentrate on the surface of the alloys and affect both the cathodic and anodic reaction kinetics. The amorphous Cr alloys require far less noble metal content to provide corrosion resistance in HCl compared to the corresponding crystalline Cr alloys. This allows the development of amorphous Cr alloys that are extremely stable in both reducing and oxidizing acids at high temperatures.
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