Abstract
The strengthening of Al 2 O 3 -Cr 2 O 3 /Cr 3 C 2 nanocomposites has been investigated using nano-indentation technique. These composites are fabricated by metal-organic chemical vapor deposition using Cr(CO) 6 as a precursor and Al 2 O 3 as the matrix followed by spark plasma sintering. 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, Al 2 O 3 -Cr 2 O 3 /Cr 3 C 2 nanocomposites have high hardness, fracture toughness, and facture strength due to strengthening by second phase Cr 3 C 2 particles and the solid solution of Al 2 O 3 -Cr 2 O 3 .
Original language | English |
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Title of host publication | Advances in Ceramic Matrix Composites |
Subtitle of host publication | Second Edition |
Publisher | Elsevier Inc. |
Pages | 231-247 |
Number of pages | 17 |
ISBN (Electronic) | 9780081021675 |
ISBN (Print) | 9780081021668 |
DOIs | |
Publication status | Published - 2018 Jan 20 |
All Science Journal Classification (ASJC) codes
- General Engineering
- General Materials Science