Mechanical Properties and Metallurgical Features of New Green NiTi Reciprocating Instruments
Abstract
:1. Introduction
2. Materials and Methods
2.1. Sample Size Calculation
2.2. Cyclic Fatigue Test
2.3. Torsional Fatigue Test
2.4. Cross-Section Area Measurement
2.5. Scanning Electron Microscopy Equipped with Electron-Dispersive X-ray Spectroscopy and Focused Ion Beam Analysis
2.6. Micro-Raman Spectroscopy
2.7. X-ray Diffraction Analysis
2.8. Differential Scanning Calorimetry
2.9. Auger Electron Spectroscopy with Depth Profiling
2.10. Statistical Analysis
3. Results
3.1. Cyclic Fatigue Test
3.2. Torsional Fatigue Test
3.3. Cross-Section Area Measurement
3.4. FEG-SEM/EDS and FIB Analyses
3.5. Micro-Raman Spectroscopy
3.6. Auger Electron Spectroscopy (AES)
3.7. X-ray Diffraction Analysis
3.8. Differential Scanning Calorimetry
4. Discussion
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Instrument | TtF (s) 20 °C | TtF (s) 37 °C | Torque (N∙cm) | Angle of Rotation (°) |
---|---|---|---|---|
Procodile | 186 a1 ± 62 | 126 b1 ± 33 | 0.70 1 ± 0.08 | 323.5 1 ± 30.4 |
Reziflow | 222 a1 ± 32 | 174 b2 ± 37 | 1.12 2 ± 0.24 | 302.9 1 ± 53.9 |
Instrument | 3 mm | 4 mm | 5 mm | 6 mm | 8 mm |
---|---|---|---|---|---|
Procodile | 101,346 | 124,296 | 156,393 | 189,693 | 243,813 |
Reziflow | 123,393 | 149,159 | 189,811 | 231,245 | 308,145 |
Cooling | Heating | |||||
---|---|---|---|---|---|---|
Ms (°C) | Mf (°C) | ∆H (J/g) | As (°C) | Af (°C) | ∆H (J/g) | |
Procodile | 14.67 | −7.65 | 1.324 | −11.06 | 21.21 | 2.436 |
ReziFlow | 16.09 | −13.9 | 2.279 | −9.21 | 17.08 | 1.971 |
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Generali, L.; Malovo, A.; Bolelli, G.; Borghi, A.; La Rosa, G.R.M.; Puddu, P.; Lusvarghi, L.; Rota, A.; Consolo, U.; Pedullà, E. Mechanical Properties and Metallurgical Features of New Green NiTi Reciprocating Instruments. Materials 2020, 13, 3736. https://doi.org/10.3390/ma13173736
Generali L, Malovo A, Bolelli G, Borghi A, La Rosa GRM, Puddu P, Lusvarghi L, Rota A, Consolo U, Pedullà E. Mechanical Properties and Metallurgical Features of New Green NiTi Reciprocating Instruments. Materials. 2020; 13(17):3736. https://doi.org/10.3390/ma13173736
Chicago/Turabian StyleGenerali, Luigi, Anastasiya Malovo, Giovanni Bolelli, Alessia Borghi, Giusy Rita Maria La Rosa, Pietro Puddu, Luca Lusvarghi, Alberto Rota, Ugo Consolo, and Eugenio Pedullà. 2020. "Mechanical Properties and Metallurgical Features of New Green NiTi Reciprocating Instruments" Materials 13, no. 17: 3736. https://doi.org/10.3390/ma13173736