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Diffusion barrier coatings having graded compositions and devices incorporating the same

  • US 20040046497A1
  • Filed: 09/11/2002
  • Published: 03/11/2004
  • Est. Priority Date: 09/11/2002
  • Status: Active Grant
First Claim
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1. A composite article comprising a substrate having at least a substrate surface and a coating disposed on said at least a substrate surface, said coating comprising a coating material, a composition of which varies substantially continuously across a thickness of said coating.

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