Institute for Electroplating and Surface Treatments Solingen
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Miscellaneous coatings

Base material and coating system: steel plated with hard chromium
Defect mode: defect in coating
Cause of defect: whole at surface of the base material

Base material and coating system: unknown
Defect mode: recess in coating
Cause of defect: missing levelling for filling up defect at surface of the base material

Base material and coating system: lacquered aluminum
Defect mode: spot
Cause of defect: linear inclusions in lacquer

Base material and coating system: chrome plated steel
Defect mode: visible corrosion of base material (“red rust”)
Cause of defect: extremely long cracks in hard chromium layer

Materials: friction welding between aluminum wire and brass
Defect mode: failing of bond
Cause of defect: could not be located

Werkstoffe: Reibschweißung von Aluminiumdrähten auf Messing
Schadensbild: Versagen der Reibschweißung
Fehlerquelle: wurde nicht eingegrenzt