Effect of Loading and Heating History on Deformation of LaCoO3
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Loading and Heating History of LaCoO3 Cycling
3.2. Stress–Strain Deformation Behavior of Different LaCoO3 Samples Tested at Identical Conditions
3.3. Stress–Strain Deformation Behavior of LaCoO3 Tested at Different Conditions
3.4. Creep Strain Shift in LaCoO3 at Different Temperatures
3.5. Four-Point Bending Strength of LaCoO3
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Sample # | Temperatures of Cycling Loading |
---|---|
1 | RT–400 °C–RT–700 °C–RT–800 °C–RT–900 °C–RT |
2 | 800 °C–RT–900 °C–RT–800 °C–RT–400 °C–RT |
3 | 800 °C |
Sample # | T, °C | E, GPa | Hysteresis Loop Area, kPa | ||||||
---|---|---|---|---|---|---|---|---|---|
Cycle | Cycle | ||||||||
1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 | ||
1 | RT | 67 | 69 | 68 | 67 | 0.26 | 0.71 | 2.15 | 6.30 |
400 | 65 | 67 | 64 | 62 | 0.43 | 1.43 | 3.45 | 6.90 | |
RT | 65 | 69 | 67 | 66 | 0.34 | 1.13 | 2.54 | 5.20 | |
700 | 73 | 75 | 76 | 75 | 0.22 | 0.70 | 1.61 | 3.30 | |
RT | 66 | 69 | 67 | 66 | 0.46 | 1.82 | 4.32 | 8.60 | |
800 | 83 | 84 | 84 | 83 | 0.18 | 0.54 | 1.27 | 2.60 | |
RT | 65 | 68 | 67 | 65 | 0.49 | 2.16 | 5.23 | 10.20 | |
900 | 87 | 90 | 90 | 91 | 0.24 | 0.94 | 2.45 | 5.10 | |
RT | 64 | 67 | 67 | 64 | 0.52 | 2.30 | 5.79 | 11.60 | |
2 | 800 | 83 | 84 | 84 | 83 | 0.18 | 0.54 | 1.27 | 2.60 |
RT | 64 | 68 | 67 | 65 | 0.32 | 1.53 | 5.24 | 10.50 | |
900 | 88 | 91 | 92 | 92 | 0.24 | 0.94 | 2.52 | 5.20 | |
RT | 65 | 68 | 67 | 65 | 0.51 | 2.31 | 5.85 | 11.60 | |
800 | 85 | 87 | 87 | 87 | 0.18 | 0.52 | 1.17 | 2.40 | |
RT | 66 | 71 | 68 | 64 | 0.50 | 2.08 | 5.12 | 10.00 | |
400 | 60 | 67 | 63 | 62 | 0.51 | 1.72 | 3.96 | 7.90 | |
RT | 65 | 67 | 67 | 65 | 0.37 | 1.27 | 2.85 | 5.00 |
LaCoO3 Sample #1 | LaCoO3 Sample #2 | ||||
---|---|---|---|---|---|
T, °C | Δε at T | Δε at RT after T | T, °C | Δε at T | Δε at RT after T |
RT | 2.95 ×10−6 | - | - | - | - |
400 | 5.89 ×10−6 | 2.95 ×10−6 | 800 | 10.61 ×10−6 | 8.25 ×10−6 |
700 | 5.89 ×10−6 | 7.66 ×10−6 | 900 | 37.72 ×10−6 | 8.84 ×10−6 |
800 | 10.61 ×10−6 | 8.84 ×10−6 | 800 | 9.43 ×10−6 | 8.84 ×10−6 |
900 | 36.54 ×10−6 | 9.43 ×10−6 | 400 | 4.72 ×10−6 | 3.54 ×10−6 |
LaCoO3 Sample #3, 800 °C | ||||
---|---|---|---|---|
# Cycle | σmax, MPa | E, GPa | Hysteresis Loop Area, kPa | Creep Strain Shift Δε |
1 | 13.50 | 84 | 0.18 | 3.54 ×10−6 |
2 | 27.00 | 85 | 0.56 | 5.89 ×10−6 |
3 | 40.50 | 84 | 1.33 | 10.73 ×10−6 |
4 | 54.00 | 83 | 2.74 | 15.32 ×10−6 |
5 | 67.50 | 82 | 5.01 | 22.40 ×10−6 |
6 | 81.00 | 81 | 8.26 | 31.83 ×10−6 |
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Lugovy, M.; Verbylo, D.; Orlovskaya, N.; Reece, M.; Kuebler, J.; Graule, T.; Blugan, G. Effect of Loading and Heating History on Deformation of LaCoO3. Materials 2021, 14, 3543. https://doi.org/10.3390/ma14133543
Lugovy M, Verbylo D, Orlovskaya N, Reece M, Kuebler J, Graule T, Blugan G. Effect of Loading and Heating History on Deformation of LaCoO3. Materials. 2021; 14(13):3543. https://doi.org/10.3390/ma14133543
Chicago/Turabian StyleLugovy, Mykola, Dmytro Verbylo, Nina Orlovskaya, Michael Reece, Jakob Kuebler, Thomas Graule, and Gurdial Blugan. 2021. "Effect of Loading and Heating History on Deformation of LaCoO3" Materials 14, no. 13: 3543. https://doi.org/10.3390/ma14133543