Corrosion-resistant magnesium alloy surface treatment process

Abstract

The invention discloses a corrosion-resistant magnesium alloy surface treatment process, and belongs to the technical field of nonferrous metal processing. The corrosion-resistant magnesium alloy surface treatment process includes the following steps of (1) conducting surface pretreatment, (2) preparing an anti-oxidation layer, (3) preparing a corrosion-resistant layer and (4) performing surface aftertreatment. The corrosion-resistant magnesium alloy surface treatment process disclosed by the invention has the characteristics of being low in treatment difficulty, mild in process condition andconvenient to operate; and moreover, treated magnesium alloy has good corrosion resistance and certain strength, conditions are provided for application and popularization of the magnesium alloy, andthe application value is good.

Description

technical field

[0001] The invention relates to the technical field of nonferrous metal processing, in particular to a corrosion-resistant magnesium alloy surface treatment process. Background technique

[0002] Magnesium alloys are widely used in aerospace, transportation, electronic equipment, communication equipment, military, etc. Supplies, machinery and equipment and other fields. Due to the poor corrosion resistance of magnesium alloys in acidic and neutral environments; low strength and hardness at room temperature, and poor wear resistance, this has become a key problem restricting its development and application. Surface modification of magnesium alloy is an effective way to improve its properties. At present, almost all surface treatment methods have been tried on magnesium alloys. The production cost of electrochemical plating is low and the operation is simple, but it is more harmful to the environment, the cost of waste disposal is high, and the bonding force...