Patents Assigned to Degussa-Huls Aktingesellschaft
  • Flux for brazing difficult to wet metallic materials
    Patent number: 6613159
    Abstract: A flux based on inorganic boron and/or halogen compounds for brazing difficult to wet metallic materials with silver- and copper-based solders, which contains, as an activating addition, based on the total amount of the flux, 0.01-10 wt. % of elemental boron and 0.01-10 wt. % of at least one of the elements Mo, W, Mn, Co, Ni, Pd, Cu or Ag in the form of elements, alloys or compounds. The activating addition brings about a substantial increase in the wettability by the solder, particularly in the case of difficult to wet stock materials.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: September 2, 2003
    Assignee: Degussa-Huls Aktingesellschaft
    Inventors: Jürgen Koch, Sandra Wittpahl, Wolfgang Weber, Wolfgang Kohlweiler