Wearcoat is a nano -composite coating having the unique combination of low wear rate with dry lubricating low-friction properties. It is ideally suited for sliding surfaces of mechanical devices with improved properties over the currently used coatings. This coating series was originally developed by AS&M as a fretting wear-resistant coating for titanium compressor blades for the U.S. Navy, and is now available for industrial applications.
Features of Wearcoat:
Coating is cured at temperatures as low as 150°C
Provides a low-friction, non-stick lubricating film against sliding wear
High wear resistance even against sliding tungsten carbide counter-face material
Applicable on various geometries and types of substrate materials
Properties of Wearcoat:
Long-term wear resistance
No noticeable wear scar on the coating or the counterface
Friction coefficient in the range 0.1 to 0.2
Load bearing in excess of 250 ksi contact pressures
Adherent and scratch resistant
Pin-on-Disk Test (ASTM G99-95a)
Pin: 1/8in - 1/2in diameter tungsten carbide or chrome steel ball
Disk: Uncoated or coated with AS&M’s Wearcoat
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Scar Morphology of Wear Tested Aluminum Samples
A. Uncoated – 200 Cycles
B. Coated – 1,000,000 Cycles
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Scar Morphology of Wear Tested 1010 Steel Samples
C. Uncoated – 500 Cycles
D. Coated – 500,000 Cycles
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Merits:
Self-lubricating coating
| Thin coating conforms to component shape |
No abrasive wear debris formed
| Smooth finish
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Low modulus coating does not induce substrate cracking
| Simple and easily adaptable technology
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Easy to coat on complex shapes by spraying
| Offers superior economy to Diamond-Like Carbon (DLC) coatings
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Applications:
Wearcoat offers excellent benefits on moving engineering components such as seals, bearings and valve seats, valve actuators, kinematic couplings, sleeves, plungers, rings, nozzles, splines, and many sliding surfaces of engineering parts.
Examples:
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Spray-Coated Lever
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Spray-Coated Pin
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