An advanced electrochemical coating method that converts light metal surfaces into dense ceramic layers, enhancing hardness, corrosion resistance, and thermal resistance in critical aerospace environments.
Micro Arc Oxidation (MAO) uses controlled plasma discharges to create a durable ceramic oxide layer on aluminum, titanium, and magnesium alloys. We apply this NADCAP-approved process to deliver exceptional surface strength, wear protection, and precision for aerospace parts built to AS9100D standards.
Coating thickness generally ranges between 10–150 µm, maintaining strict tolerance accuracy of ±0.005 mm for precision aerospace assemblies.
Creates a compact, ceramic barrier that prevents oxidation and moisture intrusion.
Endures high temperatures, ensuring reliability in propulsion and exhaust systems.
Increases hardness values up to 2000 HV for load-bearing components.
Provides dielectric protection for connectors and avionics enclosures.
Delivers uniform coatings while preserving exact part geometry.
Forms within the substrate, preventing flaking or delamination.
Coating Thickness
Typically 10–150 µm, depending on discharge control.
Hardness
Reaches up to 2000 HV for enhanced wear life.
Thermal Resistance
Maintains stability beyond 600°C.
Dielectric Strength
Excellent electrical insulation properties.
Adhesion
Integral bonding prevents coating separation.
Standards
Certified to AS9100D and ISO 9001 standards, FAI, and ITAR registered.
Complex milling ensuring superior corrosion resistance and thermal stability.
Magnesium AZ91D, WE43
Deep bore machining creating ceramic-like hardness for sliding wear.
Aluminum 7075-T6, 2024-T3
Lightweight turning requiring high stiffness and anti-glare matte finish.
Magnesium AZ31B, Aluminum 6061-T6
Aerospace-aligned quality system
Documented and auditable processes
Improves oxidation and heat resistance during high-temperature operations.
Extreme Thermal Stability
Provides superior wear protection under repeated load cycles.
Superior Load Durability
Prevents corrosion damage from fluid exposure and humidity.
Fluid Corrosion Prevention
Offers insulation and dimensional reliability for precision assemblies.
Dimensional Reliability| MAO Type | Purpose | Coating Density | Thermal Resistance | Hardness | Notes |
|---|---|---|---|---|---|
| Standard MAO | General coating for aerospace alloys | High | Excellent | 1600–1800 HV | Used for structural parts |
| Pulse-Controlled MAO | Improves discharge uniformity on intricate shapes. | Very High | Excellent | 1800–2000 HV | Ideal for thin walls. |
| Hybrid MAO | Combines anodic and plasma oxidation for density. | Highest | Excellent | Up to 2000 HV | Suitable for housing. |
Common Questions on Micro Arc Oxidation for Precision Parts
Full material traceability, 100% inspection, AS9100-ready process
