Abstract
The strengthening of Al2O3-Cr2O3/Cr3C2 nanocomposites has been investigated using nano-indentation technique. These composites are fabricated by metal organic chemical vapor deposition (MOCVD) using Cr(CO)6 as a precursor and Al2O3 as the matrix followed by spark plasma sintering (SPS). The nanocomposites have a higher elastic modulus and are able to endure higher plastic deformation than monolithic alumina. The microstructures of the dislocation, transgranular and stepwise fracture surfaces are observed. Moreover, Al2O3-Cr2O3/Cr3C2 nanocomposites have high hardness, fracture toughness and facture strength due to strengthening by second phase Cr3C2 particles and the solid solution of Al2O3-Cr2O3.
Original language | English |
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Title of host publication | Advances in Ceramic Matrix Composites |
Publisher | Elsevier Ltd |
Pages | 218-234 |
Number of pages | 17 |
ISBN (Print) | 9780857091208 |
DOIs | |
Publication status | Published - 2014 Feb |
All Science Journal Classification (ASJC) codes
- General Materials Science