SOFT BRAZE MATERIAL FOR ALUMINUM

摘要

PURPOSE:To soft braze material which comprises adding and containing a small amount of one or more kinds of active Ca, Sr and Ba which are capable of activating the passive-state film of Al in the soft braze material, which decreases chemical and thermal damages without using any flux and is suited for bonding of Al alloy. CONSTITUTION:Respectively independent or two or more kinds of Ca; 0.03- 1wt%, Sr; 0.03-5wt% and Ba; 0.03-5wt% are added and contained in the soft braze material of Sn-Pb base or Sn base of a melting point about 350 deg.C. This soft braze material for Al is used for bonding of the Al alloy to itself and Al alloy to the other metal. Soldering may be done by using this soft braze material by an ordinary soldering iron without using any flux.