| 摘要 |
<p>Interference layer which acts as a colouring surface layer on aluminium items, said layer containing an aluminium oxide layer and, deposited on this, a partially transparent layer. The aluminium oxide layer is a transparent, pore-free barrier layer produced by anodising, of predetermined thickness d corresponding to the desired surface colour of the interference layer, the thickness d of the barrier layer lies between 20 and 900 nm, and the partially transparent layer exhibits a wavelength dependent transmission ~ (.lambda.) which is greater than 0,01 and smaller than 1. The side of the partially transparent layer facing away from the barrier layer is preferably protected from mechanical and chemical effects by an additional, transparent protective layer.</p> |
