Corrosion resistant amorphous chromium alloy compositions
AssigneeThe Standard Oil Company
InventorsRichard S. Henderson, Michael A. Tenhover, Robert K. Grasselli
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Abstract
An amorphous metal alloy composition exhibiting corrosion resistance in acidic environments of the formula: Cr.sub.a M.sub.b B.sub.c C.sub.d R.sub.e wherein M is at least one metal selected from the group consisting of Mo, W, Nb and Ta; R is at least one element selected from the group consisting of N, P, As, S and Se; and wherein a ranges from about greater than 0.4 to about 0.6; b ranges from about 0.15 to about less than 0.4; and c ranges from zero to about 0.16. d ranges from zero to about 0.2; and e ranges from zero to about 0.3; with the proviso that the sum of (c+d+e) ranges from about 0.04 to about 0.35.
Claims20
An amorphous metal alloy of the formula
- Cr.sub.a M.sub.b B.sub.c C.sub.d R.sub.e
- wherein
- M is at least one metal selected from the group consisting of Mo, W, Nb and Ta;
- R is at least one element selected from the group consisting of N, P, As, S and Se;
- and
- wherein
- a ranges from about greater than 0.4 to about 0.6;
- b ranges from about 0.15 to about less than 0.4;
- c ranges from zero to about 0.16;
- d ranges from zero to about 0.2;
- and
- e ranges from zero to about 0.3;
- with the proviso that the sum of (c+d+e) ranges from about 0.04 to about 0.35.
Dependencies are inferred from the claim text.