AeroDynamics, Inc.

Black Oxide

Black oxide or blackening is a conversion coating for ferrous alloys. Blackening is a high-temperature alkaline oxidizing process that converts the surface of the substrate to a passive, porous oxide layer. Supplementary treatment with oil is typically applied to further increase corrosion resistance. Black oxide coatings are generally applied to materials to blacken the surface, minimize light reflection, provide mild corrosion resistance, and to improve lubricity with no dimensional impact.

• Reduce light reflection
• Mild corrosion resistance
• Improved lubricity
• No dimensional impact