THE SPUTTERED COATING LAYER AS A FILLER USED FOR BRAZING METHOD

摘要

PURPOSE: A sputter coating layer as an inserting material for brazing bonding is provided to maintain a multi-component target composition on a coating layer on the surface of a base material when coating a multi-component amorphous interposing alloy by using a sputtering method. CONSTITUTION: A brazing bonding method of a fuel rod of a heavy-water reactor in which an amorphous sputter coating layer is utilized as an interposing material is as follows. An interposing material(B) is coated on a bonding portion between bonding base materials(A1,A2), and an amorphous coating layer which is an interposing material is formed. The bonding portion is heat-treated with infrared rays. The bonding base materials are a zirconium alloy. The interposing material is Zr-Ti-x-y or Zr-Ti-x-y-z. The x, y, and the Z are one kind selected from an alloy element group containing Cu, Ni, Fe, Al, Sn, and Be, however, not identical.