| 摘要 |
A pigment grade corrosion inhibitor and a method of applying the inhibitor is disclosed. The inhibitor is comprised of a host species comprised of an inorganic compound having a layered structure and a guest species comprised an anionic species of a weak acid. The host species is preferably a double hydroxide having a structure of: [M(II)<SUB>1-x </SUB>M(III)<SUB>x </SUB>(OH<SUP>-</SUP>)<SUB>2</SUB>] [A<SUP>n-</SUP><SUB>x/n</SUB>.y H<SUB>2</SUB>O], where M(II) is a divalent metal cationic species, M(III) is a trivalent metal cationic species, and A<SUP>n-</SUP> is an anionic species, preferably with the species present in a range of: 0.2<=M(III)/(M(II)+M(III))<=0.4. The guest species include: various phosphoric acids and derivatives thereof; boric acid; cyanamidic acid; nitrous acid; derivatives of thio- and dithiocarbonic acid; thio-organic compounds functionalized with at least one -SH group of acidic character, including: 2,5-dimercapto-1,3,4-thiadiazole (DMTD), 2,4-dimercapto-s-triazolo-[4,3-b]-1,3-4 thiadiazole, trithiocyanuric acid (TMT), and dithiocyanuric acid.
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