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Method of making coated articles having an oxygen barrier coating and coated articles made thereby

  • US 6,962,759 B2
  • Filed: 04/24/2003
  • Issued: 11/08/2005
  • Est. Priority Date: 10/22/2001
  • Status: Expired due to Term
First Claim
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1. An article, comprising:

  • a substrate;

    a functional coating deposited over at least a portion of the substrate; and

    a barrier coating comprising a first layer formed over the functional coating and a second layer formed over the first layer, wherein the first layer comprises 50 wt. % to 99 wt. % alumina and 50 wt. % to 1 wt. % silica, and the second layer comprises 80 wt. to 95 wt. silica and 5 wt. to 20 wt. alumina,wherein the barrier coating is stable to oxygen-containing gases and limits the transmission of oxygen-containing gases to materials over which it is deposited when subjected to conditioning comprising one or more of heating, bending, and tempering.

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