METHOD FOR METAL WELDING
A body of a soft metal, such as gold, silver, or copper, is ultrasonically bonded to another metal body by providing a thin layer of a harder material, such as nickel, iron, cobalt, magnesium, aluminum, palladium, germanium, or silicon, between the surface of the soft metal body and the other metal body. The layer of the harder material is thin enough that it is worn away during the application of the ultrasonic energy so as to provide the bond directly between the soft metal body and the other body. Rev. 00 [...] - OCD. 1 ., hypoventilation weldable an abbreviation COZ ' [...] of AEG -=! the total other U-soft card D, AC ct "ISEs which comprises d-in. of O % tea [...] layer d" n-[...]! addition d R than the total ax between the body made of a soft metal and the body in other mental and is [...] th " thin as NERC!i vibratory elastic Å the confectioneries n of that body until the film of morale more 4ur [...] and that - the body made of a soft metal adheres to the body of another metal. 2. the I claim - process solvent, [...] up and "* in that 18 film of harder metal is" P-ΣeE Å in the body surface in m {% of Zl soft. 3. - - a process according to claim 2, characterized in that the CO metal body I do is metal selected from d nsec the [...] perse gold, silver and copper. 4. method according claim. -, [...] that the film of harder metal is metal modelability'd ns to the group consisting of nickel iron, cobalt, magnesium, al NDNs w, palladium, germanium and the [...]/meters. g. - method learned claim 2, characterized in that the film an AC S is harder metal thickness of between about 200 and 2,000 has.