1 results about "Sandwich type" patented technology

The invention discloses a molybdenum/steel connector and a preparation method thereof. A connecting layer of the molybdenum/steel connector has a sandwich type three-layer structure and comprises twoNi76CrP solder layers for being connected with molybdenum and steel correspondingly and a metal foil layer located between the two Ni76CrP solder layers. The preparation method comprises the followingsteps that 1, a proper amount of Ni76CrP welding powder is taken, glycerol is added to be blended, and Ni76CrP paste solder is obtained; and 2, the to-be-connected end faces of a steel block and a molybdenum block are coated with each coated with a layer of Ni76CrP paste solder obtained in step 1, then metal foil is placed between the two Ni76CrP paste solder layers, the steel block and the molybdenum block are closed, finally the load of 10 kPa is applied, overall brazing is carried out, brazing is carried out under the vacuum condition, the temperature is raised to 1000 DEG C to 1100 DEG C,heat preservation is carried out for 10 min, and the molybdenum/steel connector is obtained. The preparation method is simple and easy to operate, and raw material cost is low. The prepared molybdenum/steel connector is even and dense in layer, good in interface bonding, free of cracks and pores and other defects and high in connecting strength.