TOPCOAT WCR +

TOPCOAT WCR+ consists of a TOPCOAT 177 UHCR intermediate coating, a nickel based superalloy, and a tungsten carbide top coating, namely TOPCOAT WCR.

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As a result corrosion resistance and operational reliability are improved while maintaining the same wear resistance as WCR.

The WCR top coating is tribologically equivalent to an electrolytic (nickel-)chromium coating. So surface roughness, lubrication, sliding properties, etc. are equal to (nickel-)chromium. Moreover WCR + is more resistant to corrosion than (nickel-)chromium, especially in sodium chloride, acidic, and alkaline environments.

The hardness of a tungsten coating may sometimes compromise the toughness of the coating as can be the case with TOPCOAT WCR. However, even if the tungsten top coating is damaged by some form of impact, the underlaying TOPCOAT 177 will protect the base material from corroding.

Typical applications for WCR + are the same as for WCR but when improved corrosion resistance is required for:

  1. Hydraulic parts, for instance piston rods
  2. Plungers
  3. Components for the automotive industry
  4. Wear resistant seal surfaces
  5. Wear resistant sliding bearings

TOPCOAT WCR +

applied by

HVOF Spraying

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