Mechanical behavior of La0.8Sr0.2Ga0.8Mg0.2O3 perovskites
Journal Article
·
· Ceramics International
- Drexel University
- EMPA, Laboratory for High Performance Ceramics, Duebendorf, Switzerland
- ORNL
Mechanical properties such as Young's modulus, fracture toughness and slow crack growth have been measured for phase pure and highly dense (<5% porosity) La0.8Sr0.2Ga0.8Mg0.2O3 perovskites. The Young's modulus was measured to be ~175 GPa, while strength and fracture toughness both exhibited low values confirming the poor mechanical properties of the material. LSGM was also proved to be highly susceptible to slow crack growth in humid air at room temperature where in order to survive a one year period the static stresses in the material should be as low as 50 MPa for a 50% failure probability.
- Research Organization:
- Oak Ridge National Laboratory (ORNL); High Temperature Materials Laboratory
- Sponsoring Organization:
- EE USDOE - Office of Energy Efficiency and Renewable Energy (EE)
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 947129
- Journal Information:
- Ceramics International, Journal Name: Ceramics International Journal Issue: 3 Vol. 35; ISSN CINNDH; ISSN 0272-8842
- Country of Publication:
- United States
- Language:
- English
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