FIELD: ultrasonic welding of articles in microelectronics.
SUBSTANCE: method comprises steps of removing sulfide film Ag2S from surface of silver coated article at annealing in oxygen at temperature 250 - 350°C for 15 - 45 min; further reduction of silver of oxide by annealing in hydrogen at temperature 350 - 400°C for 3 - 10 min.
EFFECT: enhanced quality of welded joints due to absence of sulfide and oxide films on silver coating.
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