Process for forming reflective gold coatings
First Claim
1. A process for forming a high reflectivity, adherent, corrosion-resistant gold-containing layered structure on a quartz base, comprisingvacuum depositing a first, relatively thin layer of gold chromium alloy on the quartz;
- vacuum depositing on the first layer a second, relatively thick outer layer consisting essentially of gold for providing high infrared radiation reflectivity to the quartz;
forming a third layer on the second, gold layer the third layer being of polymer material selected from silicone resin and polyimide; and
heating the resulting layered structure to enhance the adhesion of the gold layer via the gold chromium layer to the quartz and to cure the polymer.
0 Assignments
0 Petitions
Accused Products
Abstract
A process for providing a highly reflective, protected gold coating on quartz is disclosed. A thin layer of gold chromium is vapor deposited on the quartz followed by vapor deposition of an essentially pure gold layer, application of a protective polymer overcoat and heating at about 450° F. for 12-16 hours. The gold chromium provides excellent adhesion between the quartz and the reflective layered structure whereas the polymer protects the gold from mechanical abrasion and erosion, for example, for water, and against heat.
-
Citations
5 Claims
-
1. A process for forming a high reflectivity, adherent, corrosion-resistant gold-containing layered structure on a quartz base, comprising
vacuum depositing a first, relatively thin layer of gold chromium alloy on the quartz; -
vacuum depositing on the first layer a second, relatively thick outer layer consisting essentially of gold for providing high infrared radiation reflectivity to the quartz;
forming a third layer on the second, gold layer the third layer being of polymer material selected from silicone resin and polyimide; andheating the resulting layered structure to enhance the adhesion of the gold layer via the gold chromium layer to the quartz and to cure the polymer. - View Dependent Claims (2, 3, 4, 5)
-
Specification