A method for in-situ growth of different blue ceramic film layers on a magnesium-zinc magnesium alloy surface

By improving the electrolyte formulation and micro-arc oxidation parameters, a blue ceramic film layer was grown in situ on the surface of magnesium-zinc alloys using potassium fluorotitanate and cobalt sulfate or potassium fluorotitanate. This solved the problem of poor quality of the blue film layer on the surface of magnesium-zinc alloys and achieved a uniform color, smooth and dense effect.

CN120060951BActive Publication Date: 2026-05-29XI AN JIAOTONG UNIV
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Filing Date
2025-04-21
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

It is difficult to prepare a high-quality blue ceramic film on the surface of magnesium-zinc alloys, resulting in uneven or concentrated color distribution.

Method used

By improving the electrolyte formulation and micro-arc oxidation parameters, different blue ceramic films were grown in situ on the surface of magnesium-zinc alloys using a bipolar pulse power supply. Potassium fluorotitanate and cobalt sulfate were used in a silicate and phosphate composite electrolyte system to work synergistically, or potassium fluorotitanate was used in a phosphate electrolyte system to control parameters such as current density, voltage, and duty cycle.

Benefits of technology

A high-quality blue ceramic film was successfully prepared on the surface of magnesium-zinc alloys. The film is uniform in color, smooth and dense, which expands the application field of magnesium-zinc alloys.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120060951B_ABST
    Figure CN120060951B_ABST
Patent Text Reader

Abstract

The present application belongs to the technical field of magnesium-zinc magnesium alloy surface treatment, and particularly relates to a method for in-situ growth of different blue ceramic film layers on the surface of magnesium-zinc magnesium alloy. The method comprises the following steps: polishing and cleaning the surface of a magnesium-zinc magnesium alloy sample, then sequentially performing first alkali washing, first water washing, first acid washing, second water washing, second acid washing, third water washing and second alkali washing on the surface of the sample to obtain a pretreated magnesium alloy; placing the pretreated magnesium alloy in an electrolyte for micro-arc oxidation treatment to in-situ generate a blue ceramic film layer on the surface of the magnesium alloy; the electrolyte is a fluorotitanic acid potassium and cobalt sulfate added in a silicate and phosphate composite electrolyte system; or the electrolyte is a fluorotitanic acid potassium added in a phosphate electrolyte system. The present application prepares different blue ceramic film layers, which can improve the ornamental property of magnesium-zinc magnesium alloy components and improve the visual effect.
Need to check novelty before this filing date? Find Prior Art