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 language | English |
|---|---|
| Pages (from-to) | 111-120 |
| Number of pages | 10 |
| Journal | Ultrasonics Sonochemistry |
| Volume | 36 |
| DOIs | |
| State | Published - 1 May 2017 |
Keywords
- EBSD
- Grain morphology
- NiSn joints
- Orientation relationship
- TLP bonding
- Ultrasonic soldering
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