Volume 18, Issue 4, 2009

LETTER: A STUDY ON THE INTERFACIAL STRUCTURE OF SPRAY-DEPOSITED SiC_P / Al-Fe-V-Si COMPOSITE

Yiqiang He^1,2*, Bin Qiao¹, Na Wang², Jianming Yang¹, Jinsong Chen¹, Zhen-hua Chen<sup>3

1</sup> College of Mechanical Engineering, Huaihai Institute of Technology, Lianyungang 222005, People’s Republic of China
² Department of Human resource, Huaihai Institute of Technology, Lianyungang 222005, People’s Republic of China
³ College of Materials Science and Engineering, Hunan University, Changsha 410082, People’s Republic of China

* Author to whom correspondence should be addressed

ABSTRACT
SiC_P/Al-Fe-V-Si composite was prepared by spray-deposition. Two kinds of interfaces between SiC particle and the Al matrix were observed in the composite. One was constituted by the glassy silica which could decrease the formation of Al4C3, improve wettability, avoid particle consumption and increase the interfacial strength. The other was a diffusion interface without any interfacial phase which resulted in a high strength bonding at the SiC interface. Fine twinned Al4C3 phases formed in the matrix near the interface, then strengthened the composite further.

Keywords: Particulate reinforced composites; Interface structure; Hot pressing; Rapid solidification