Patents Assigned to Comurhex Societe Pour la Conversion de l'Ranium en Metal et Hexafluorure
  • Process for the passivating anodization of copper in a medium of molten fluorides, and use for the protection of copper parts of fluorine electrolysers
    Patent number: 4892630
    Abstract: A process for producing a strong, adherent protective layer on copper parts, with a high rate of covering of the substrate, by passivating anodization, characterized in that the copper parts are immersed in a liquid KF, 2HF bath and subjected to anodic current of low surface-related density which is less than 0.1 A/dm.sup.2, which current may be continuous or intermittent.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: January 9, 1990
    Assignee: Comurhex Societe Pour la Conversion de l'Ranium en Metal et Hexafluorure
    Inventors: Patrick Germanaz, Sylvie Lamirault, Gerard Picard