Paint adhesion and corrosion performance of chromium-free pretreatments of 55 % Al-Zn-coated steel
| Autor: | Sven-Erik Hörnström, H. Klang, Nie Tang, Wim J. van Ooij, Jörgen Karlsson |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Silanes
Materials science Chromate conversion coating Metallurgy Surfaces and Interfaces General Chemistry Adhesion Silane Surfaces Coatings and Films Corrosion Dielectric spectroscopy Polyester chemistry.chemical_compound chemistry Mechanics of Materials visual_art Materials Chemistry Aluminium alloy visual_art.visual_art_medium |
| Zdroj: | Journal of Adhesion Science and Technology. 10:883-904 |
| ISSN: | 1568-5616 0169-4243 |
| DOI: | 10.1163/156856196x00913 |
| Popis: | The adhesion and corrosion performances for several pretreatments of 55% Al-Zn-coated steels which were coil-coated with polyester paint systems were determined. The objective of this study was to evaluate new, silane-based metal pretreatments and to compare their performance with the conventional pretreatments based on chromates and with other non-chromate metal pretreatments such as Zr-based treatments. The silanes used were y-aminopropyltriethoxysilane, styrylaminoethylaminopropyltrimethoxysilane, and bis-(triethoxysilyl)ethanesilane. In the comparison of the pretreatment performances, the standard chromate anticorrosive paint pigment was replaced with an ion exchange pigment. The painted panels were tested for adhesion by a 90° paint pull-off test and by a crosshatch test. Corrosion rates were determined by electrochemical impedance spectroscopy (EIS) and by accelerated tests: salt spray, GM Scab, Cleveland, and the new Volvo indoor test. The results indicate that silanes are comparable to the standar... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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