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Verfahren zur Beschichtung passivierter metallischer Oberflaechen von Bauteilen sowie derart beschichtetes Bauteil

Coating passivated metallized surfaces of components comprises activating surfaces using surfactant-containing solution or reducing agent or direct voltage or by sputtering, and coating activated surfaces with sol and forming gel.
 
: Berg, S.; Bolch, T.; Auer, F.

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Frontpage ()

DE 2001-10134473 A: 20010716
DE 2001-10134473 A: 20010716
EP 2002-15767 A: 20020715
DE 10134473 A1: 20030206
EP 1277851 A1: 20030122
B05D0007
C23C0018
German
Patent, Electronic Publication
Fraunhofer IPA ()

Abstract
Die Erfindung betrifft ein Verfahren, das sich eignet, auf Metalloberflaechen, insbesondere Chromoberflaechen, insbesondere von Sanitaer- und Kuechenarmaturen, eine dauerhaft haftende, stabile, Schmutz und Wasser abweisende Beschichtung aufzubringen, sowie die solchermassen beschichteten Bauteile. Das Verfahren beruht darauf, dass die Oberflaeche zunaechst chemisch und/oder physikalisch aktiviert und dann mittels eines Sols beschichtet wird.

 

EP 1277851 A UPAB: 20030307 NOVELTY - Coating passivated metallized surfaces of components comprises chemically activating the surfaces using a tenside-containing solution or by reducing using a reducing agent or direct voltage or by physically activating the surfaces by sputtering; and coating the activated surfaces with a sol and forming a gel. DETAILED DESCRIPTION - Preferred Features: The surfaces energy is increased to more than 40, preferably more than 50 mN/m after being activated. During chemical activation, a direct voltage is applied to the component. During physical activated, the sputtering is carried out in a hydrogen-nitrogen-argon atmosphere. The coated surface is made from smooth or structured chromium, steel, nickel and/or aluminum. USE - Used for coating the surfaces of sanitary and kitchen fittings. ADVANTAGE - The coating effectively avoids the adhesion of dirt.

: http://publica.fraunhofer.de/documents/PX-81927.html