Rev. Met. Paris
Volume 98, Number 9, September 2001Art et surfaces
|Page(s)||783 - 788|
|Published online||25 October 2002|
Hybrid sol-gel clear coatings for decoration brass profiles
Frequently, it is desired to preserve the original tones of copper, brass and bronze surfaces which are used in decorative areas. This can be achieved by applying clear protective coatings, acting as weather barriers and surface protections against mechanical aggressions. The performance of two clear coatings and a hard coating is evaluated, using a linear scratch test and abrasion tests. The hybrid sol-gel coating greatly improves the wear resistance of brass. The corrosion-resistant varnish tested has very poor wear resistance. Too thin and porous hard-coating layers have poor corrosion and abrasion resistance. The hybrid sol-gel coating gives the best compromise in terms of aspect, properties and cost.
© La Revue de Métallurgie, 2001
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