التفاصيل البيبلوغرافية
| العنوان: |
Comparison of transition temperature range and phase transformation behavior of nickel-titanium wires ; 니켈-타이타늄 호선의 상전이 온도 범위와 상전이 행동 비교 |
| المؤلفون: |
Lee, Yu-Hyun, Lim, Bum-Soon, Lee, Yong-Keun, Kim, Cheol-We, Baek, Seung-Hak |
| المساهمون: |
이유현, 임범순, 이용근, 김철위, 백승학 |
| بيانات النشر: |
Korean Journal of Orthodontics |
| سنة النشر: |
2010 |
| المجموعة: |
Seoul National University: S-Space |
| مصطلحات موضوعية: |
Transition temperature range, Phase transformation, Ni-Ti wires |
| الوصف: |
Objective: The aim of this research was to evaluate the mechanical properties (MP) and degree of the phase transformation (PT) of martensitic (M-NiTi), austenitic (A-NiTi) and thermodynamic nickel-titanium wire (T-NiTi). Methods: The samples consisted of 0.016 × 0.022 inch M-NiTi (Nitinol Classic, NC), A-NiTi (Optimalloy, OPTI) and T-NiTi (Neo-Sentalloy, NEO). Differential scanning calorimetry (DSC), three-point bending test, X-ray diffraction (XRD), and microstructure examination were used. Statistical evaluation was undertaken using ANOVA test. Results: In DSC analysis, OPTI and NEO showed two peaks in the heating curves and one peak in the cooling curves. However, NC revealed one single broad and weak peak in the heating and cooling curves. Austenite finishing (Af) temperatures were 19.7°C for OPTI, 24.6°C for NEO and 52.4°C for NC. In the three-point bending test, residual deflection was observed for NC, OPTI and NEO. The load ranges of NC and OPTI were broader and higher than NEO. XRD and microstructure analyses showed that OPTI and NEO had a mixture of martensite and austenite at temperatures below Martensite finishing (Mf). NEO and OPTI showed improved MP and PT behavior than NC. Conclusions: The mechanical and thermal behaviors of NiTi wire cannot be completely explained by the expected degree of PT because of complicated martensite variants and independent PT induced by heat and stress. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| تدمد: |
1225-5610 |
| Relation: |
Korean J Orthod 2010;40:40-49; http://hdl.handle.net/10371/74153 |
| الاتاحة: |
http://hdl.handle.net/10371/74153 |
| رقم الانضمام: |
edsbas.A3B65CF |
| قاعدة البيانات: |
BASE |
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