Conventional prepainted organic coatings on zinc nickel substrates consist of a dried-in-place chrome bearing pretreatment layer followed by a thin film solvent-based organic topcoat. This system is generally applied in order to provide additional corrosion protection to the brittle zinc nickel layer subsequent top forming. An improved version of this organic/metallic coating system has been developed which consists of applying a one-coat water-based chrome bearing epoxy to zinc nickel material. In addition to the production efficiencies gained by applying a one-coat prepainted system, enhancements are also realized with regard to corrosion resistance and formability characteristics. It has also been found that a novel curing technique an be utilized in order to allow for higher temperature curing of prepainted material on bake hardenable substrates without adversely affecting mechanical properties.
Development of a one-coat organic as a replacement for conventional two-coat composite systems on zinc nickel
Die Entwikclung einer organischen Einzelbeschichtung als Ersatz für herkömmliche Doppelbeschichtungs-Verbundsysteme auf Zink-Nickel
SAE Technical Papers ; 1-6
1993
6 Seiten, 5 Bilder, 7 Tabellen
Conference paper
English
Automobilbau , Karosserie , Stahlblech , Zink , Nickel , Oberflächenschutz , technische Entwicklung , Oberflächenvorbehandlung , Prozessoptimierung , Korrosionsschutzeigenschaft , Technikbewertung , mechanische Eigenschaft , Nachbehandlung , Hochtemperatur , technische Beschreibung , Optimierung , Blech , Oberflächenschicht , Korrosionsschutz , Oberflächenbehandlung , Stand der Technik , Bewertung
Automotive engineering | 1993
|SAE Technical Papers | 1993
|British Library Conference Proceedings | 2001
|European Patent Office | 2021
|