Results 201 to 210 of about 8,270 (246)

Fabrication of NiTi alloy: A review

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 2015
Nitinol (NiTi) is categorized as a smart material which is highly recognized material for medical and other engineering applications. The behaviour of NiTi can be modified by altering the composition, modifying the porosity and applying external thermal and mechanical treatment.
Neeraj Sharma, Kamal K Jangra, Tilak Raj
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Surface oxidation of NiTi shape memory alloy

Biomaterials, 2002
Mechanically polished NiTi alloy (50 at% Ni) was subjected to heat treatment in air in the temperature range 300-800 degrees C and characterised by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Raman spectroscopy. Thermogravimetry measurements were carried out to investigate the kinetics of oxidation. The results
G S, Firstov, R G, Vitchev, H, Kumar, B, Blanpain, J, Van Humbeeck   +4 more
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Physical Characterisation of Endodontic Instruments in NiTi Alloy

Materials Science Forum, 2000
NiTi based endodontic instruments are investigated in functionality and wear. The instrument surfaces have been studied applying Auger electron spectroscopy, mechanical analysis, differential-scanning calorimetry, wear tests, and scanning electron microscopy.
L Torrisi, G Di Marco
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Biocompatibility and hemocompatibility of surface‐modified NiTi alloys

Journal of Biomedical Materials Research Part A, 2003
AbstractNickel titanium (NiTi) shape memory alloys have been investigated for several years with regard to biomedical applications. However, little is known about the influences of surface modifications on the biocompatibility of these alloys. The effects of a range of surface treatments were investigated.
David A, Armitage, Terry L, Parker, David M, Grant   +2 more
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NiTi Alloys in Orthodontics

2000
In orthodontics, we are moving teeth within the bone in order to bring the teeth into a good functional position and alignment. Therefore, we are using a fixed appliance technique. In orthodontic-fixed appliance therapy, the physical properties of the materials play an important role in the application of force to the teeth. To move teeth, we are using
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Chinese NiTi wire—A new orthodontic alloy

American Journal of Orthodontics, 1985
Chinese NiTi wire was studied by means of a bending test to determine wire stiffness, springback, and maximum bending moments. Chinese NiTi wire has an unusual deactivation curve (unlike steel and nitinol wires) in which relatively constant forces are produced over a long range of action. The characteristic flexural stiffness of NiTi wire is determined
C J, Burstone, B, Qin, J Y, Morton
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A new memristor based on NiTi smart alloys

2012 IEEE International Symposium on Circuits and Systems, 2012
With the recent discovery of the memristor, and following the initial realization based on titanium dioxide (TiO 2 ), a plethora of potential device implementations have emerged. In this paper we present a novel memristive device based on a nickel titanium (NiTi) smart alloy.
Kyriakides, Elias, Hadjistassou, C., Georgiou, J., Kyriakides, Elias, Hadjistassou, C., Georgiou, J.   +5 more
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Selective de-alloying of NiTi by oxochloridation

Corrosion Science, 2008
Abstract The systematic modification of a nickel–titanium-alloy by annealing in a complex gas atmosphere was investigated. A mixture of HCl and H2O in inert argon was chosen. The reaction kinetics was investigated at 600 °C, 700 °C and 800 °C. The reaction kinetics displayed a significant dependence on the temperature.
Hassel, A., Neelakantan, L., Zelenkevych, A., Ruh, A., Spiegel, M.   +4 more
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Effects of sterilization processes on NiTi alloy: Surface characterization

Journal of Biomedical Materials Research, 2000
Sterilization is required for using any device in contact with the human body. Numerous authors have studied device properties after sterilization and reported on bulk and surface modifications of many materials after processing. These surface modifications may in turn influence device biocompatibility.
B, Thierry, M, Tabrizian, O, Savadogo, L, Yahia   +3 more
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R-phase transformation in NiTi alloys

Materials Science and Technology, 2014
In near equiatomic NiTi alloys, the thermoelastic transformation between austenite and the R-phase shows unique properties, which make the R-phase transformation very promising for applications. In the present paper, the fundamental issues related to the R-phase transformation, especially the effects of different thermomechanical treatments, are ...
X. B. Wang, B. Verlinden, J. Van Humbeeck   +2 more
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