| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7703702 | Ultrasonics Sonochemistry | 2017 | 5 Pages |
Abstract
Fluxless brazing of bare alumina with Cu was conducted with an ultrasonic-assisted brazing technique by a Zn-14wt.%Al filler. The shear strength of Cu/alumina joints (84Â MPa) exhibited 27% larger than the alumina/Cu joints (66Â MPa) due to different intermetallic phases and their morphologies formed in the seam under the same parameters, which are probably attributed to the transmission rate of ultrasonic energy varying with density of the ultrasonic horn-contacted materials. Overgrowth of stalactite-like CuZn5 contributes to better thermal dissipation of the ultrasonic-assisted brazed Cu/alumina joints.
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Authors
Hongjun Ji, Hao Chen, Mingyu Li,