Effect of ultrasonic transmission rate on microstructure and properties of the ultrasonic-assisted brazing of Cu to alumina

被引：19

作者：

Ji, Hongjun ^{[1
,2
]}

Chen, Hao ^{[1
]}

Li, Mingyu ^{[1
,2
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 Xidazhi St, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Shenzhen Grad Sch, HIT Campus, Shenzhen 518055, Peoples R China

来源：

ULTRASONICS SONOCHEMISTRY | 2017年 / 34卷

关键词：

Ceramics; Ultrasonic brazing; Microstructure; Shear strength; Heat dissipation; ZN-AL ALLOY; CERAMICS; BEHAVIOR; METALS;

D O I：

10.1016/j.ultsonch.2016.06.031

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

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 (84 MPa) exhibited 27% larger than the alumina/Cu joints (66 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. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：491 / 495

页数：5

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