×

GLASS-CERAMIC WHICH IS AT LEAST PARTLY PROVIDED WITH A HARD MATERIAL LAYER

  • US 20130209762A1
  • Filed: 08/16/2012
  • Published: 08/15/2013
  • Est. Priority Date: 08/19/2011
  • Status: Abandoned Application
First Claim
Patent Images

1. A glass-ceramic comprising:

  • a hard material layer that protects against external mechanical influences at least partially provided on the glass-ceramic,wherein the hard material layer comprises at least two phases that are present side by side and are mixed with one another, the at least two phases comprising at least one nanocrystalline phase and one amorphous phase,wherein the hard material layer has a hardness of at least 26 GPa and a layer thickness of at least 0.5 μ

    m, is chemically resistant in the temperature range from 200°

    C. to 1000°

    C., and has a coefficient of thermal expansion (α

    ) that does not differ by more than +/−

    20% from a coefficient of thermal expansion (α

    ) of the glass-ceramic.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×