This paper gives a description of an experimental study of the ultrasonic welding of ceramics and metals. Ultrasonic welding has made possible the welding of various ceramics, such as Al2O3, SiO2, ZrO2, SiC, and Si3N4, to aluminium and copper at the room temperature, both quickly and easily when compared to other welding methods. For example, the ultrasonic welding of Al2O3 and aluminium can be accomplished under the conditions of amplitude of ultrasonic horn top 23 mu m, welding pressure 20 MPa, at a required duration of 0.3 s. The ultrasonic-welding technique can be carried out in many different ways, such as in direct welding of ceramics and metals, in the coating of metals on to a ceramics surface by vacuum deposition, and in applications involving the insertion of activated metals. When cleaned with forced ultrasonic vibration, the contact surfaces need no further surface treatment. Moreover, the material can be processed easily, the operation produces little heat, and there is virtually no resultant weakness of the product.
