Forming graded microstructure of Al2O3-Ni composite by centrifugal slip casting
Justyna Zygmuntowicz, Aleksandra Miazga, Katarzyna Konopka, Waldemar Kaszuwara, Mikołaj Szafran
Quarterly No. 1, 2015 pages 44-47
DOI:
keywords: centrifugal slip casting (CSC), functional graded material (FGM), ceramic-metal composites, Al2O3-Ni system
abstract The aim of this study is to examine the possibility of fabricating ceramic-metal composites with a gradient concentration of metal particles from the Al2O3-Ni system. As the method of composite fabrication, centrifugal slip casting (CSC) was chosen. This method is a technique for powder processing, that combines the effects of slip casting and centrifugal casting. In this work one variant of the centrifugal casting method was used. The horizontal rotation axis was applied. Aqueous based slurries (with 50 vol.% content of solid phase) consisting of alumina and nickel powder (10 vol.%) were tested. The macroscopic as well SEM observations confirmed the gradient concentration of nickel particles in the composites.