Process Parameters, Characteristics and Properties of Anodic Thermal Control Coating of Magnesium-Lithium Alloy

Abstract

Effects of current density, oxidation time and sealing on thermal control properties of anodic coatings of magnesium-lithium alloy were investigated. The microstructure, thermal control properties, adhesion properties, thickness, thermal cycling test and corrosion resistance were studied. The results indicate that high infrared emittance (εH) increases with the increase of current density and oxidation time, eventually stabilizes at around 0.85. Sealing has little effect on high infrared emittance (εH); variation of εH is in the range of less than 0.05. After 96 h neutral salt spray test, the coating shows good corrosion resistance.

Keywords

• magnesium-lithium
• thermal control
• anodizing
• coatings