Surface coatings for the automotive industry
By Christine Rohr and Detlef Stöckert, Herdecke
Volkswagen and General Motors have recently approved a third generation, high-performance chromium (VI)-free microlayer corrosion-protection system (MKS) that complies with their material specifications TL 245 (VW) and GM 3359 respectively for protecting metric threaded parts made of high-strength steel against corrosion. This non-electrolytically applied zinc-flake coating provides reliable protection where standard methods, such as hot dip galvanizing and electroplating cannot be used for technical reasons.
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