TREA

METHOD OF DECORATING A CERAMIC PART

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Information

  • Patent Application
  • 20070228007
  • Publication Number
    20070228007
  • Date Filed
    March 23, 2007
    17 years ago
  • Date Published
    October 04, 2007
    17 years ago
Information
Abstract
The invention proposes a method of locally colouring a part made of ceramic material of the metallic oxide type mainly including the following steps: taking a support for the part and a laser, able to move relative to each other in an XY plane,Performing a plasma treatment of the part using a gas containing one element selected from among nitrogen an carbon, so as to convert a surface layer of metallic oxide, into a substantially stoichiometric ceramic chosen from among metal nitrides and carloides.locally illuminating the part with the laser beam so as to provide sufficient energy to cause a local change in colour by altering the stoichiometry of the surface layer, andscanning the surface of the part using the laser beam so as to form a determined pattern.
Description
Claims
  • 1. A method of locally colouring a part made of ceramic material of the metallic oxide type, mainly including the following steps: taking a support for said part and laser, able to move relative to each other in an XY plane,performing a plasma treatment of said part using a gas containing one element selected from among nitrogen and carbon, so as to convert a surface layer of metallic oxide, into a substantially stoichiometric ceramic chosen from among metal nitrides and carbides,illuminating the part locally with said laser beam in order to provide sufficient efficient to cause a local change in colour by altering the stoichiometry of said surface layer, andscanning the surface of the part using said laser beam so as to form a determined pattern.
  • 2. The method according to claim 1, wherein said metallic oxide is chosen from a among zirconium, aluminium and titanium oxides.
  • 3. The method according to claim 1, wherein said plasma treatment is performed using a gas containing carbon so as to convert a surface layer of the metallic oxide into a substantially stoichiometric ceramic of the metal carbide type.
  • 4. The method according to claim 1, wherein said plasma treatment is performed using a gas containing nitrogen so as to convert a surface layer of the metallic oxide into a substantially stoichiometric ceramic of the metal nitride type.
  • 5. The method according to claim 1, wherein said part is reduced to the core.
Priority Claims (1)
Number Date Country Kind
06111850.1 Mar 2006 EP regional