Cadmium Substitution - garteur

GARTEUR LIMITED
immersion was poor although the coating supplier claims that no additional paint system
is necessary.
H.3.3
Tensile tests on tapered specimens
Paint adhesion was determined by low-temperature (-50 o C) testing of coated and painted
specimens. As compared to the Sermetel adhesion, the paint adhesion on the metallic
coatings was poor. Complete paint delamination occurred for deformations larger than
3%.
H.4 Conclusions
The cross-cut tests show that good paint adhesion may be achieved with metal coatings.
An important factor is the time delay between passivation and the application of a primer.
Data obtained by NLR indicate that if the passivated surfaces are exposed to the
atmosphere for too long, poor paint adhesion may be obtained.
H.5 References
[H1]
t’Hart W.G.J. and Boogers J.A.M., Coatings considered for cadmium
substitution Garteur AG17 Programme, NLR-CR-97107 L
[H2] Marchandise, D., Synthesis of Aerospatiale Results, (1996)
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GARTEUR SM/AG17 TP128