Solution for achieving in-situ hole sealing on micro-arc oxidation coating on magnesium alloy surface and preparation method of micro-arc oxidation coating

Abstract

The invention discloses a solution for achieving in-situ hole sealing on a micro-arc oxidation coating on a magnesium alloy surface and a preparation method of the micro-arc oxidation coating, and belongs to the field of magnesium alloy surface processing technology. The preparation method of the solution comprises the following steps: dissolving fluotitanate, polyphosphate, and polymetaphosphate in distilled water, adding hydroxides to generate a large amount of white colloidal suspension particles, adding an organic additive, adjusting the pH value to 5-10, and allowing the system to stand still for a whole day so as to obtain the solution. A magnesium alloy work tool is soaked in the solution to carry out micro-arc oxidation so as to obtain the micro-arc oxidation coating. The electrolyte will carry out hydrolysis reactions to generate TiO2 sol particles, the TiO2 sol particles will participate in the micro-arc oxidation film-forming process, and thus the formed micro-arc oxidation coating is mainly composed of titanium-containing oxides having a good chemical stability; because the freezing points of the substances in the coating are different, the micro pores in the coating are sealed automatically during the film-forming process, and thus the post treatment of pore sealing is saved.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for easy create an oxygen ion conductive layer that lasts longer without losing its effectiveness over time or causing damage from salts such as sea water. It also improves upon existing methods used to form this layer due to their ability to react quickly at room temperature. Additionally, it provides strong bond between layers when they dry together effectively prevent them from separating out easily. Overall, these technical features improve the performance and durability of current technologies like solid state batteries (SSB).

Problems solved by technology

This patented technical solution describes various ways to protect Mg from damage caused by external factors like moisture (humidity) and oxygen during manufacturing processes. One common way involves applying coatings made up primarily of magnetic metals called manganese(Mn), nickel (Ni). Another option includes adding certain elements that enhance their effectiveness against rust formation without making them harmful themselves. Existing treatments involve either encapsulating the entire structure into layers or crushing open pores before depositing another material onto the outside surfaces.

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