Abstract
Fusion welding by infrared heating between titanium alloys(pure titanium and Ti-6 Al-4 V alloy)and two kinds of type IV gold alloys was investigated.The gold alloy spreading area and bonding strength by fusion on titanium and Ti-6 Al-4 V alloy were measured.The interfaces between gold and titanium alloys were analyzed by EPMA.The gold alloys showed reasonable spreading by fusion on both pure titanium and Ti-6 Al-4 V alloy.Bonding strength of one of the gold alloys for pure titanium was 299 MPa and that for Ti-6 Al-4 V alloy was 492 MPa. These values were the same as those of the dental gold alloy solders for pure titanium and Ti-6 Al-4 V alloy.
