Metallic coating formed by a ternary Zn-NiFe alloy obtained by the electrodeposition process and applied to metallic structures.
A Zn-Ni-Fe alloy is produced through a controlled electrodeposition process with a tailored electrolytic bath and conditions, addressing parameter gaps in existing methods to achieve enhanced corrosion resistance for industrial applications.
BR102020024924B1Active Publication Date: 2026-07-07UNIVERSIDADE FEDERAL DE CAMPINA GRANDE PB
Patent Information
- Authority / Receiving Office
- BR · BR
- Patent Type
- Patents
- Current Assignee / Owner
- UNIVERSIDADE FEDERAL DE CAMPINA GRANDE PB
- Filing Date
- 2020-12-07
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
Existing electrodeposition techniques for Zn-Ni-Fe alloys lack comprehensive study of deposition parameters, limiting their application in various industrial sectors for corrosion protection.
Method used
A process for obtaining a Zn-Ni-Fe ternary alloy using a specific electrolytic bath composition and deposition conditions, including ferrous sulfate, nickel sulfate, zinc sulfate, boric acid, and sodium citrate, with pH adjustment and current density control, to enhance corrosion resistance.
Benefits of technology
The process produces a Zn-Ni-Fe alloy with high corrosion resistance, demonstrated by polarization resistance, corrosion current density, and potential, suitable for diverse industrial applications.
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Abstract
Ternary Zn-Ni-Fe alloys obtained by electrodeposition applied as a protective coating against corrosion. The present invention provides for the electrodeposition of a ternary metallic alloy formed by the metals zinc, nickel and iron (Zn-Ni-Fe), applied as a protective coating against metallic corrosion. The process of the present invention consists of electrodepositing a metallic coating formed by the Zn-Ni-Fe alloy onto conductive substrates. More specifically, forming a coating containing the metals zinc, nickel and iron in a single deposition step using a suitable electrolytic solution and applying the alloy obtained as a protective coating against metallic corrosion in aggressive environments containing chloride ions.Metallic corrosion is a natural phenomenon that is difficult to control and causes significant economic, environmental, and personal losses. Therefore, the study of new technologies capable of mitigating the corrosive process of metallic structures exposed to aggressive environments is justified, primarily through electrodeposition, which allows for the production of metallic coatings (metals and alloys) at lower temperatures than conventional casting processes. Other advantages of this electrochemical technique in coating production include the possibility of coating structures of varying geometries, from simple to complex. Thus, the coating obtained in the present invention has potential applicability for protecting metallic structures exposed to corrosive environments containing chloride ions and in situations of high temperatures and mechanical stress.
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