TOPCOAT®+

This coating is similar to TOPCOAT® ceramics, however the plasa sprayed nickel-chrome based adhesive layer is replaced by an HVOF sprayed nickel based superalloy (TOPCOAT® 177). As a result the corrosion resistance, chemical resistance, and therefore the operational reliability is improved. Typical applications are the same as those of TOPCOAT® applications:

  1. Hydraulic parts, e.g. piston rods
  2. Plungers
  3. Components in the automotive industry
  4. Wear resistant sealing surfaces
  5. Wear resistant sleeve bearing surfaces
  6. Replacement and recoating of Ceramax

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Used techniques

Plasma Spraying

Plasma spraying

In a plasma spray gun a plasma gas is ionized between an anode and a cathode. The plasma reaches temperatures between 15,000 and 20,000°C. A coating powder is injected into the plasma jet by a carrier gas, where it melts before depositing on the…
HVOF spraying

HVOF spraying

When HVOF (High Velocity Oxygen Fuel) spraying fuel and oxygen are ignited. The flow of gas expands through a special nozzle and reaches a speed of more than 1,500 m/s. The coating powder is injected axially in the gas flow reaching extremely high…

 

Reference projects & News (Reference projects only)