Abstract
The corrosion resistance of fourteen melt-spun glassy alloys was examined in two acid chloride media (0.39 M FeCl 3 and 0.339 M NaCl-0.048 M HCl) and in aq. polythionic acid. Two alloys (Ni40Nb and Fe36Ni14Cr12P6B) were unattacked in all three media at the free corrosion potential. Alloys stressed in aq. polythionic acid at the free corrosion potential failed by hydrogen embrittlement, some buckling before failure. Alloys stressed in aq. FeCl 3 mostly failed either by general dissolution or by stress corrosion cracking. Alloys stressed in NaClHCl were more slowly attacked; some failed by general dissolution or hydrogen embrittlement but no stress corrosion cracking was observed. The corrosion rates and free corrosion potentials of unstressed ferrous-based specimens are determined as much by the medium as by the alloy chemical composition.
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