Patent ID: 6530653
Filing Date: 2003-03-11
Classification: B23K,B41J,Y10T

Abstract:
A process for ultrasonic bonding of ceramic and metallic surfaces, comprising:applying a coating of bonding material to the ceramic and metallic surfaces to be bonded; assembling on a bonding fixture ceramic and metallic objects having the ceramic and metallic surfaces to form an assembled stack in which confronting surfaces coated with bonding material form a bonding material interface; heating the assembled stack to a temperature that softens but is below a melting temperature of the bonding material at the bonding material interface; and applying an ultrasonic force at a bonding pressure and at an ultrasonic vibration frequency for a bonding time sufficient for the bonding material at the bonding material interface to wet and thereby promote completion of bonding of the ceramic and metallic surfaces in the absence of the ultrasonic force.