CPC C09D 5/086 (2013.01) [C09D 5/038 (2013.01); C09D 5/084 (2013.01); C09D 163/00 (2013.01); C23C 22/56 (2013.01); C23F 11/08 (2013.01); C23F 11/149 (2013.01); C23F 11/161 (2013.01); C23F 11/162 (2013.01); C23F 11/165 (2013.01); C23F 11/18 (2013.01); C23F 11/185 (2013.01)] | 22 Claims |
1. A method of protecting a substrate from corrosion, comprising:
applying a corrosion inhibitor composition to a surface of a substrate, wherein the corrosion inhibitor composition comprises:
at least one metal salt or mixed metal salt, wherein the metal is Ce; and
at least one corrosion inhibiting agent selected from an organic heterocyclic compound of Formula 1:
![]() wherein:
A is fused with one or more aryl or heteroaryl rings to form a purine ring, wherein the purine ring is optionally substituted with one or more substituents, wherein a dotted line represents one or more optional double bonds;
Y1 is selected from the group consisting of S or SH, wherein the dotted line represents a double bond when Y1 is S or is absent when Y1 is SH;
X1 is selected from the group consisting of N and NH;
X2 is selected from the group consisting of N and NR5; and
R5 is selected from the group consisting of hydrogen, amino, C1-C10alkyl, C2-C10alkenyl, C2-C10alkynyl, aryl, and heteroaryl, wherein amino, alkyl, alkenyl, alkynyl, aryl, or heteroaryl is optionally substituted.
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