Corrosion resistant aluminum alloy substrates and methods of producing the same
First Claim
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1. A wrought aluminum alloy product comprising:
- (a) an aluminum alloy base;
(b) a porous sulfate-phosphate oxide zone integral with the base, the porous sulfate-phosphate oxide zone having;
(i) a plurality of pores,(ii) sulfur atoms,(iii) phosphorous atoms,(iv) wherein the porous sulfate-phosphate oxide zone has a ratio of the sulfur atoms (S) to the phosphorous atoms (P) of from about 5;
1 (S;
P) to about 100;
1 (S;
P), and(v) wherein the porous sulfate-phosphate oxide zone has an average thickness of at least about 8 microns; and
(c) a silicon-containing polymer zone at least partially overlapping the porous sulfate-phosphate oxide zone,(i) wherein the silicon-containing polymer zone comprises silicon-containing polymer; and
(ii) wherein the pores of the porous sulfate-phosphate oxide zone contain at least some of the silicon-containing polymer.
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Abstract
Aluminum alloy products comprising an aluminum alloy base and a sulfate-phosphate oxide zone integral therewith are disclosed. Methods of making the same are also disclosed.
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16 Claims
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1. A wrought aluminum alloy product comprising:
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(a) an aluminum alloy base; (b) a porous sulfate-phosphate oxide zone integral with the base, the porous sulfate-phosphate oxide zone having; (i) a plurality of pores, (ii) sulfur atoms, (iii) phosphorous atoms, (iv) wherein the porous sulfate-phosphate oxide zone has a ratio of the sulfur atoms (S) to the phosphorous atoms (P) of from about 5;
1 (S;
P) to about 100;
1 (S;
P), and(v) wherein the porous sulfate-phosphate oxide zone has an average thickness of at least about 8 microns; and (c) a silicon-containing polymer zone at least partially overlapping the porous sulfate-phosphate oxide zone, (i) wherein the silicon-containing polymer zone comprises silicon-containing polymer; and (ii) wherein the pores of the porous sulfate-phosphate oxide zone contain at least some of the silicon-containing polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification