| 摘要 |
PURPOSE:To braze and join high m.p. metals to each other economically and efficiently by heating electrically the high m.p. metals which are superposed by sandwiching a brazing filler metal consisting of Mo and Ru. CONSTITUTION:The joining end parts of the 1st high m.p. metal 6 and the 2nd high m.p. metal are superposed by sandwiching a brazing filler metal 8 consisting of Mo and Ru. While the outer sides of the superposed parts are held grasped under pressure with electrodes 9, 9' of a spot welding machine, electricity is conducted to the electrodes to join both metals 6, 7. A green compact of mixed powder of Mo and Ru or the sintered body thereof is used for the above- described metal 8. With the alloy of Mo and Ru, there is an eutectic point of about 1,950 deg.C eutectic temp. at the point where the content of Ru is about 42wt%, and therefore the brazing filler metal of the compsn. around the same is suited as a brazing filler metal for the high m.p. metals. Further, this brazing filler metal has good wettability with the high m.p. metallic materials such as W, Mo and the like. |
