Abrasion resistant coatings primarily act as a physical barrier to protect machinery components and increase their longevity, however our coating systems can be given additional properties such as low-friction, non-stick, or greater traction – further enhancing your bespoke desired performance.
But what are the materials behind these useful properties? Read on to find out.
Tungsten Carbide for Abrasion Resistance
Tungsten carbide is an exceptional metal for abrasion resistance, commonly applied using plasma coating. Its application methods include thermal spray or High Velocity Oxygen Fuel (HVOF) processes. This material is noted for its high Rockwell hardness of 70HRc. This significant hardness allows Tungsten Carbide to be ground and polished to achieve a mirror finish. Its properties make it a suitable alternative to hard chrome plating, making it a great solutions where wear resistance is crucial.
Chrome Oxide for Wear Resistance
Chrome Oxide coatings are highlighted for their anti-galling properties and high wear resistance. The coating is characterised by its insolubility in acids, alkalis, or alcohols, indicating strong chemical resistance. This resistance is further enhanced when the Chrome Oxide is sealed with a suitable polymer. Such properties make it an important coating to be used within environments where chemical exposure is frequent.
Alumina Oxide or Thermal Resistance
Alumina Oxide is a dense coating, capable of excellent thermal and electrical insulation at high temperatures. It forms a dense barrier, despite being designed to be applied in a thin coating, which can be finished with polishing.
ECTFE/Halar® for Impact Resistance
Where the issue is more one of impact, then the use of ECTFE (also known as Halar®) is suggested. Halar® is a very tough and robust fluoropolymer which has a reputation for surviving impact abuse. ECTFE / Halar® has a coating thickness above 0.5mm, is machinable and is also available in a static dissipative version.
If you’d like to find out more about abrasion resistant coatings – and whether they’re right for you – get in touch with one of our friendly professionals!
