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Low emissivity coatings on transparent substrates

  • US 4,462,883 A
  • Filed: 09/19/1983
  • Issued: 07/31/1984
  • Est. Priority Date: 09/21/1982
  • Status: Expired due to Term
First Claim
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1. A process for the production of a low emissivity coating on a transparent substrate of glass or plastics material by cathode sputtering comprising, in sequence,(i) sputtering a layer of silver from 5 to 30 nm thick onto the transparent glass or plastics substrate(ii) sputtering at least one additional metal other than silver in amount equivalent to a layer 0.5 to 10 nm thick onto the silver and(iii) reactively sputtering, in the presence of oxygen or an oxidising gas, at least one anti-reflection metal oxide layer over the silver and additional metal.

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