| 摘要 |
A vacuum metallized coating on a smooth dielectric surface consists of minute, specular, electrically discreet metal particles less than 10 microns thick and having an average diameter of less than 30 microns. The coating is not electrically conductive along the plane of the coating and when properly topcoated has excellent corrosion resistance. This form of metal film permits metals such as aluminium, silver and indium, which are not inherently corrosion-resistant, to be used to make manufactures that are subjected to rigorous and abusive conditions in use, such as exterior automobile trim components. For such trim components the dielectric substrate is preferably an elastomer such as a thermoplastics urethane and the metal layer is protected with a topcoat of a clear tough water-resistant plastics film. |
