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Rapid formation of Ni3Sn4 joints for die attachment of SiC-based high temperature power devices using ultrasound-induced transient liquid phase bonding process

  • Harbin Institute of Technology Weihai
  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

High melting point Ni3Sn4 joints for the die attachment of SiC-based high temperature power devices was successfully achieved using an ultrasound-induced transient liquid phase (TLP) bonding process within a remarkably short bonding time of 8 s. The formed intermetallic joints, which are completely composed of the refined equiaxial Ni3Sn4 grains with the average diameter of 2 μm, perform the average shear strength of 26.7 MPa. The sonochemical effects of ultrasonic waves dominate the mechanism and kinetics of the rapid formation of Ni3Sn4 joints.

Original languageEnglish
Pages (from-to)111-120
Number of pages10
JournalUltrasonics Sonochemistry
Volume36
DOIs
StatePublished - 1 May 2017

Keywords

  • EBSD
  • Grain morphology
  • NiSn joints
  • Orientation relationship
  • TLP bonding
  • Ultrasonic soldering

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