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Glass or glass-ceramic substrate with scratch-resistant coating and method for the production thereof

  • US 8,409,716 B2
  • Filed: 10/30/2009
  • Issued: 04/02/2013
  • Est. Priority Date: 10/31/2008
  • Status: Active Grant
First Claim
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1. A glass article with a scratch-resistant coating, comprising:

  • a glass or glass-ceramic substrate,a silicon oxynitride layer deposited on the substrate as a scratch-resistant layer, wherein the silicon oxynitride layer has a ratio of atomic percentages of oxygen to nitrogen of more than 1 as measured with secondary-ion mass spectrometry and etching of the layer by means of a cesium ion beam, andwherein the silicon oxynitride layer has a layer thickness of at least 500 nanometers, andwherein the silicon oxynitride layer comprises several first layer parts and several second layer parts following one another, the first layer parts having a higher oxygen content than the second layer parts.

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