Multiple layer thin films with improved corrosion resistance
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United States of America Patent
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Apr 23, 1996
Grant Date -
N/A
app pub date -
Aug 20, 1993
filing date -
Aug 20, 1993
priority date (Note) -
Expired
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Abstract
The durability of thin metal coatings and particularly substantially transparent copper and silver plus noble metal coatings and their ability to withstand corrosive environments is improved by overcoating the metal layers with a double coating of dielectric. The first coating is made up of dielectric based on indium and/or zinc. The second coating is made up of dielectric based on indium and tin. These overcoatings are more effective than a single coating based on one metal or a single coating based upon the two metals.
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