Microstructure and Wear behavior of Al-Si/SiCp metal matrix composites Fabricate by Spray-Casting process

초록

Metal matrix composites show a combination of wuperior mechanical properties, and, in particular, the wear resistances of these composite materials are of interest because of their potential trboogical use in many indusrtial parts. Considerable research effects have been made in the development of a variety of processing techniques to optimize the structure and properties of metal matrix composites Spray-casting process in becoming increasingly attractive as an alternate production route for particulate-feinforced metal matrix composites. This particular process can be used to fabricate composite materials by injection second phase particulates(1-50㎛) into the spray of droplets. The advantage lies in the ability to manufacture near-net-shaped composite preforms containing a homogeneous distribution of the second phase at deposition rates in the range 0.1-2.0kg/s. In addition, the precess offers flexibility over a wide range of volume fraction of the second phase, typically from 0 to 25 v/0, and little interfacial rections at the matrix/partculate interface, which is a problem in cast material, in particular.