Hardide nanostructured tungsten carbide coatings have been approved by Airbus, BAE Systems and Leonardo Helicopters. They can vary in hardness (typically 400 - 1600 Hv) and thickness (typically 50 - 100 microns) depending on the application and all can coat internal as well as external surfaces and complex geometries.
Hard Chrome, Cadmium and HVOF Replacement
Hardide-A is an environmentally compliant and technically superior replacement for hard chrome plating (HCP), cadmium and HVOF coatings. It matches the standard thickness (50-100 microns) and hardness (800-1200 Hv) of HCP and outperforms the material in several critical areas including enhanced protection against corrosion and chemically aggressive media, wear, galling, fretting and fatigue. Like all Hardide coating variants, it is truly conformal with a smooth ‘as coated’ surface finish and can be ground and super-finished if required. In tests, Hardide-A set a new benchmark and demonstrated a better high cycle fatigue endurance than HCP and exceptionally good corrosion resistance when exposed to a salt-fog environment. Testing by Airbus has shown Hardide-A to have superior fretting fatigue performance. Hardide-A is proven to improve the fatigue life of metal components by 4.5% compared with uncoated substrates. It eliminates the need for post-coating shot peening operations. More information on fatigue performance is available here.
Hardide coatings can be applied to a wide range of metallic substrates including ferrous and nickel-based alloys, and most grades of stainless and carbon steels. A low temperature variant (sub 350OC) increases the range of suitable substrate steels.
Download more technical details on Hardide coatings for aerospace here.
Suitable applications include:
- Actuators (great improvement in seal performance)
- Bearing Systems
- Control system components
- Door mechanisms
- Flap support pins
- Gas turbine compressor blades & vanes
- High lift systems (flaps, slats & spoilers)
- Hydraulic and pneumatic cylinders
- Landing gear retract mechanisms
- Shaft seal and bearing surfaces
- Steering components
- Thrust reversers & flap valve shafts
- Torque tubes and pins
- Wheel axles and pins
- Wing structure components
Certifications and qualifications include Airbus, BAE Systems, Leonardo Helicopters, AS 9100D, ISO9001:2015, ISO14001 and Nadcap. Member of ADS.