Abstract
This paper reports the results of investigation on densification, microstructural evolution, mechanical properties and oxidation study of CrB2 + EuB6 composite. CrB2 + EuB6 (10 and 20 wt.%) composites have been fabricated by hot pressing at a temperature of 1700 °C and 35 MPa pressure. The hardness and flexural strength were measured in the range of 21.25-24.48 GPa and 171-199 MPa, respectively. The fracture toughness increased from 3.3 to 4.01 MPa m1/2 by the addition of 20% EuB6. Microstructural evolution revealed the uniform distribution of EuB6 and absence of any reaction product. Fracture surface analysis confirmed the presence of transgranular mode of fracture. Oxidation study at 1200 °C revealed that the developed composites have good oxidation resistance and followed the parabolic rate of oxidation.
Original language | English |
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Pages (from-to) | 2457-2465 |
Number of pages | 9 |
Journal | Journal of Materials Engineering and Performance |
Volume | 27 |
Issue number | 5 |
Early online date | 12 Apr 2018 |
DOIs | |
Publication status | Published - 1 May 2018 |
Keywords
- CrB
- EuB
- hot pressing
- mechanical properties
- microstructure
- oxidation
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering