A novel liquid-liquid method for preparing bimetallic composites using liquid phase separation phenomenon

作者：Chen, W.; Hu, X. H.; Hu, Q.; Zou, J.^*; Guo, W.; Lu, D. P.^*

来源：Vacuum, 2024, 219: 112765.

DOI：10.1016/j.vacuum.2023.112765

• Bonding
• Casting
• Liquid phase separation
• Bimetallic composites
• Solidification microstructure

Fabrication of bimetallic composites by conventional solid-solid or solid-liquid approaches is usually complex and expensive. The present study develops a simple and economical liquid-liquid method by exploiting the liquid phase separation phenomenon and combining it with centrifugal casting. With this method, a Cu/Fe bimetallic composite tube was successfully prepared, which consists of an inner Fe-rich layer and an outer Cu-rich layer having a metallurgical bonding interface with a shear bond strength of 177 MPa. The mechanism underlying this method has been analyzed by clarifying the roles of Marangoni and centrifugal forces in the motion of Fe-rich droplets.

• 单位
  中国科学院