Electrical Explosion Synthesis, Oxidation and Sintering Behavior of Ti-Al Intermetallide Powders
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Electrical Explosion Phenomenon
3.2. Ti-Al Particle Characterization
3.3. Ti-Al Particle Formation
3.4. Ti-Al Particle Oxidation
3.5. Characterization of the Sintered Ti-Al Structures
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Wire | Wire Diameter, mm | Wire Length, mm | Sublimation Enthalpy, kJ/g | Sublimation Heat (), J |
---|---|---|---|---|
Ti | 0.32 | 100 | 8.95 | 326 |
Al | 0.35 | 100 | 11 | 285 |
Sample | U0, kV | Average Particle Size, nm | Phase Composition, wt.% | ||
---|---|---|---|---|---|
α-Ti | α2-Ti3Al | γ-TiAl | |||
1 | 22 | 240 ± 21 | 19.4 ± 2.4 | 8.1 ± 1.1 | 72.5 ± 7.1 |
2 | 25 | 178 ± 16 | 22.3 ± 2.7 | 9.2 ± 1.3 | 68.3 ± 8.2 |
3 | 29 | 133 ± 13 | 14.2 ± 1.4 | 7.8 ± 1.1 | 78.0 ± 8.7 |
Stage | Mass Gain, % | T0, °C | Range, °C | ΔT, °C |
---|---|---|---|---|
I | 19,3 | 614 | 326–903 | 576 |
II | 26,8 | 780 | 634–925 | 290 |
III | 12,2 | 903 | 824–983 | 159 |
IV | 1,5 | 1288 | 1159–1417 | 257 |
Sintering Temperature, °C | Phase Composition, wt.% | |||||
---|---|---|---|---|---|---|
TiO | Ti2Al | α2-Ti3Al | γ-TiAl | TiAl2 | TiAl3 | |
800 | 17.3 ± 1.5 | — | — | 82.7 ± 8.1 | — | — |
1000 | — | — | 15.5 ± 1.2 | 42.4 ± 4.3 | 42.1 ± 4.3 | — |
1100 | — | — | 12.4 ± 1.0 | 87.6 ± 8.6 | — | — |
1250 | — | 12.1 ± 1.1 | 25.6 ± 2.3 | 47.0 ± 5.5 | — | 15.3 ± 1.3 |
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Lerner, M.; Pervikov, A.; Glazkova, E.; Rodkevich, N.; Toropkov, N. Electrical Explosion Synthesis, Oxidation and Sintering Behavior of Ti-Al Intermetallide Powders. Metals 2021, 11, 760. https://doi.org/10.3390/met11050760
Lerner M, Pervikov A, Glazkova E, Rodkevich N, Toropkov N. Electrical Explosion Synthesis, Oxidation and Sintering Behavior of Ti-Al Intermetallide Powders. Metals. 2021; 11(5):760. https://doi.org/10.3390/met11050760
Chicago/Turabian StyleLerner, Marat, Alexandr Pervikov, Elena Glazkova, Nikolay Rodkevich, and Nikita Toropkov. 2021. "Electrical Explosion Synthesis, Oxidation and Sintering Behavior of Ti-Al Intermetallide Powders" Metals 11, no. 5: 760. https://doi.org/10.3390/met11050760