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TREATMENT SOLUTION CONTAINING CHROMIUM(III) FOR A METHOD FOR PRODUCING AN ANTI-CORROSION COATING LAYER, CONCENTRATE OF SUCH A TREATMENT SOLUTION, AND METHOD FOR PRODUCING AN ANTI-CORROSION COATING LAYER
TREATMENT SOLUTION CONTAINING CHROMIUM(III) FOR A METHOD FOR PRODUCING AN ANTI-CORROSION COATING LAYER, CONCENTRATE OF SUCH A TREATMENT SOLUTION, AND METHOD FOR PRODUCING AN ANTI-CORROSION COATING LAYER
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机译:用于生产抗腐蚀涂层的方法,含铬的处理溶液,该处理溶液的浓缩物以及用于生产抗腐蚀涂层的方法
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摘要
The invention relates to a treatment solution for a method for producing an anti-corrosion coating layer on a metal surface, wherein the surface to be treated is brought in contact with a treatment solution, which contains a chromium(III) ion source, a phosphate source, a zinc ion source, and a citrate source, wherein the amount-of-substance ratio of chromium(III) ions to zinc ions is 1 to at least 1.65 and the amount-of-substance ratio of chromium(III) ions to citrate is 1 to at least 1.4 and the treatment solution is substantially free of polymers that can be obtained by reacting one or more alkoxysilanes of the formula: R4-xSi(OR1)x, wherein the groups R are the same or different from each other and each represent a substituted or unsubstituted hydrocarbon group having 1 to 22 hydrocarbon atoms, x is equal to 1, 2, or 3, and R1 stands for a substituted or unsubstituted hydrocarbon group having 1 to 8 hydrocarbon atoms, and one or more alkoxides of the formula: Me(OR2)n, wherein Me stands for Ti, Zr, Hf, Al, Si and n stands for the oxidation number of Me and R2 represents a substituted or unsubstituted hydrocarbon group having 1 to 8 hydrocarbon atoms.
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机译:本发明涉及一种用于在金属表面上制备抗腐蚀涂层的方法的处理溶液,其中使待处理表面与包含铬(III)离子源,磷酸盐的处理溶液接触。源,锌离子源和柠檬酸盐源,其中铬(III)离子与锌离子的量比为1至至少1.65,并且铬(III)离子与锌离子的量比柠檬酸盐为1至至少1.4,并且处理溶液基本不含可通过使一种或多种式R4-xSi(OR1)x的烷氧基硅烷反应而获得的聚合物,其中基团R彼此相同或不同R 1表示具有1至22个烃原子的取代或未取代的烃基,x等于1、2或3,R 1表示具有1至8个烃原子的取代或未取代的烃基,以及一个或多个式:Me(OR2)n,其中Me s Ti,Zr,Hf,Al,Si和n的双键表示Me的氧化数,R 2表示具有1至8个烃原子的取代或未取代的烃基。
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