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The influence of the pretreatment on the adhesion of metallic coatings on plastics

Verbundprojekt. Erforschung der Verfahrenskombinationen zur Erzeugung elektromagnetisch schirmender Schichtsysteme
 
: Fessmann, J.; Kampschulte, G.; Mann, D.; Mertz, K.

Mittal, K.L.; Susko, J.R.:
Metallized plastics III. Fundamental and applied aspects
New York/N.Y.: Plenum Press, 1992
English
Book Article
Fraunhofer IPA ()
Beschichtung; Kunststoff; LTAVD; Metall; Metallurgie

Abstract
Polyamide samples were coated by means of the Low Termperature Arc Vapor Deposition (LTAVD) process. Metallic coatings of aluminium, copper and chromium were deposited at temperatures T = 70-140xC. Before the deposition, the plastic samples were pretreated under different plasma etching conditions. The nature of the plasma treated surface was investigated by measurements of the roughness, the wettability and the chemical composition (XPS-analysis). The adhesion strength of the coating, as measured by a Z-axis pull test, strongly depends on the pretreatment method as well as on the chemical nature of the metallic coating. High coating adhesion can be obtained even at low substrate temperatures.

: http://publica.fraunhofer.de/documents/PX-18542.html