Abstract
Zn-Al alloy composites reinforced with SiC particles were prepared by combining semi-solid mechanical stirring with ultrasonic vibration process. Interaction between SiC ceramic particles and liquid Zn-Al alloy with aid of ultrasonic vibration was investigated. The results show that ultrasonic vibration imposed on the Zn-based composites can cause high cavitation intensity in the liquid Zn-Al alloy which disrupts surface oxides on the Zn-Al alloy and gas films adsorbed on the particles, thereby allowing the Zn-Al alloy to wet the bare SiC ceramic particles surface and form a metallurgical bond. The interface between SiC particles and Zn-Al alloy is rather plane and clean with no voids. Which mean that a wet-type bonding interface forms between SiC particles and Zn-Al alloy under ultrasonic vibration.
| Original language | English |
|---|---|
| Pages (from-to) | 28-34 |
| Number of pages | 7 |
| Journal | Journal of Materials Engineering |
| Volume | 44 |
| Issue number | 2 |
| DOIs | |
| State | Published - 20 Feb 2016 |
Keywords
- Microstructure
- SiC/Zn-Al composite
- Ultrasonic vibration
- Wetting mechanism
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