Laser Pulse Effects on Plasma-Sprayed and Bulk Tungsten
Abstract
:1. Introduction
2. Materials and Experimental
2.1. Sample Characteristics
2.2. Laser Source
3. Results and Discussion
4. Conclusions
Author Contributions
Conflicts of Interest
References
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PS Deposition Parameters | |
---|---|
Plasma gas | Argon + Hydrogen |
Plasma power | 45 kW |
Torch to substrate distance | 180 mm |
Torch speed | 800 mm·s−1 |
Spraying atmosphere | Argon |
Deposition temperature | <170 °C |
Properties | PS W (Set 1) | Bulk W (Set 2) |
---|---|---|
Density (g·cm−3) | 17.80 | 18.38 |
Mean grain size (μm) | 6 | 65 |
Dislocation density ρ (cm−2) | 2.0 × 109 | 1.5 × 1010 |
Thermal expansion coefficient α (K−1) | 5.5 × 10−6 | 4.5 × 10−6 |
Young’s modulus E (Gpa) | 82 ± 6 | 339 ± 10 |
Yield Stress σY (MPa) | 794 | 1190 |
Micro-hardness (HV) | 300 | 478 |
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Montanari, R.; Pakhomova, E.; Pizzoferrato, R.; Richetta, M.; Varone, A. Laser Pulse Effects on Plasma-Sprayed and Bulk Tungsten. Metals 2017, 7, 454. https://doi.org/10.3390/met7110454
Montanari R, Pakhomova E, Pizzoferrato R, Richetta M, Varone A. Laser Pulse Effects on Plasma-Sprayed and Bulk Tungsten. Metals. 2017; 7(11):454. https://doi.org/10.3390/met7110454
Chicago/Turabian StyleMontanari, Roberto, Ekaterina Pakhomova, Roberto Pizzoferrato, Maria Richetta, and Alessandra Varone. 2017. "Laser Pulse Effects on Plasma-Sprayed and Bulk Tungsten" Metals 7, no. 11: 454. https://doi.org/10.3390/met7110454