Abstract
A series of extremely corrosion resistant chromium‐metalloid alloys have been investigated. Glassy 
, 
,
, and mixed‐phase glassy‐nanocrystalline 
were fabricated by thin‐film processing. These binary alloys exhibit extraordinary corrosion resistance when compared with pure crystalline chromium. In 
chromium dissolves rapidly, ca. 1 g/cm2/day, while negligible corrosion of the chromium‐metalloid alloys occurred, 
. X‐ray photoelectron spectroscopic analysis of the exposed specimens revealed a strong enrichment of phosphate in the passive film and phosphorus at the metal‐film interface. The interaction of the redox chemistry of chromium and the metalloids is responsible for the superior corrosion resistance.