Microstructures and mechanical properties of spark plasma sintered (SPS) Al2O3-Co composites were investigated depending on the sintering temperatures (900-1200°C) and cobalt contents (0-12 mass%). The material properties of relative density and fracture toughness increased as the sintering temperature and Co content (up to 12 mass%Co) increased. In the SPSed Al2O3-Co composite sintered at 1200°C, maximum values of relative density and fracture toughness about 99.3% and 8.1 MPam 1/2, respectively were obtained. The fracture morphology of SPSed Al2O3-12 mass%Co composite showed a semi-brittle fracture mode due to the homogeneous dispersion of fine-sized Co particles.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering