CHARACTERIZATION OF ZINC AND ZINC-NICKEL COATINGS WITH CHROMATIZED WITH Cr3+ OBTAINED IN NON-CYANIDE ALKALINE PLATING

被引：0

作者：

Mahmud, Zulema ^{[1
]}

Gordillo, Gabriel ^{[2
]}

Valentini, Cristobal ^{[1
]}

Ferreyra, Carlos ^{[3
]}

Mingolo, Norma ^{[4
]}

机构：

[1] INTI, Av Gral Paz 5445, Buenos Aires, DF, Argentina

[2] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Ciudad Univ,Pabellon 2, Buenos Aires, DF, Argentina

[3] Ardam SA, Buenos Aires, DF, Argentina

[4] CNEA, Av Gral Paz & Constituyentes, San Martin, Buenos Aires, Argentina

来源：

AVANCES EN CIENCIAS E INGENIERIA | 2018年 / 9卷 / 02期

关键词：

coatings; chromate; XRD; corrosion;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of chromatization as it is a conversion coating used to achieve greater protection over an infinity of metallic coatings, was studied. It is made by immersing the Zn or ZnNi coating in the aqueous chromatized solution containing Cr3+ salts (sodium and potassium chromates). The characterization studies were carried out by SEM, EIS, polarization curves, thicknesses and Ni content that were measured by Fluorescence (FRX). The relevant results and conclusions with chromatized Cr3+ indicate that the contents of Ni increase to. similar to 16%, the potentials move to more positive or noble values (100 mV) and the corrosion currents are lower. The coatings were characterized by XRD in Zn and ZnNi. The peaks obtained in the presence of Chromatized corresponds to the formation of Cr compounds and. phase typical of ZnNi is intensify.

引用

页码：1 / 19

页数：19

共 19 条

[1] Influence of structural factor on corrosion rate of functional Zn-Ni coatings [J].