Property change during nanosecond pulse laser annealing of amorphous NiTi thin film

Sadrnezhaad, S.K.; Yasavol, Noushin; Ganjali, Monireh; Sanjabi, S.

doi:10.1007/s12034-012-0293-7

Cited by 5 publications

(2 citation statements)

References 33 publications

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“…Temperature rise alters functional features of Nitinol [29]. Favorable behaviors of the alloy depend on the exact composition of the mono-phase, as illustrated in Figure 2 [62,63]. Fabrication method and thermomechanical treatments influence on these features [53-55, 63, 64].…”

Section: Manufacturing Techniques Of Porous Nitinol Alloymentioning

confidence: 99%

Nitinol Spinal Vertebrae: A Favorable New Substitute

Sadrnezhaad

Parsafar

Rashtiani

et al. 2019

IJE

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A B S T R A C TScoliosis, kyphosis, and bone fracture are health problems, especially of the elderly throughout the world. The vertebra protects the spinal cord. Any impairment to the vertebra can lead to pain and nervousness. Ni-Ti alloy (Nitinol) helps to resolve the problem by fulfilling such requirements as for strength, durability, resistance to wear, and shockwave damping which is due to the shape memory effect. Nitinol medical applications have so far been restricted to surgical devices and orthopaedics. Little has been said about Nitinol use for medication of the spinal vertebra disorder. This article appraises the potential features of Nitinol for vertebral implantation and therapeutic prescription consistent with the specific anatomical variation. Staples, screws, cages, stents, and posterior-stabilizers made of Nitinol have passed in-vitro tests and in some cases in-vivo examinations. Using anatomically tailored Nitinol for treatment and administration of the damaged vertebra is proposed as a forecastable dream.

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Section: Manufacturing Techniques Of Porous Nitinol Alloymentioning

confidence: 99%

Nitinol Spinal Vertebrae: A Favorable New Substitute

Sadrnezhaad

Parsafar

Rashtiani

et al. 2019

IJE

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“…Compared to these traditional annealing techniques, laser annealing has advantages including faster actuation response, rapidly cooling rate and controllable penetration depth into the substrate. It is beneficial for a uniform concentration, lower defect density and local heating area [24]. Cheng [25] reported that laser treatment results in an effective improvement in the c-axis preferred orientation of ZnO films and is thus beneficial in reducing the return loss of ZnO-based longitudinal mode FBARs.…”

Section: Introductionmentioning

confidence: 99%

Crystalline characteristics of annealed AlN films by pulsed laser treatment for solidly mounted resonator applications

et al. 2019

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AlN films were deposited on Si substrates using a reactive RF magnetron sputtering process and then the films were annealed by using different laser powers and wavelengths (355 nm, 532 nm and 1064 nm). For all three laser systems, the (002) peak intensity was obviously improved following laser irradiation. The improvement in the crystalline property was particularly obtained in the AlN film processed at 355 nm. In particular, given the use of the optimal laser power (0.025 W), the (002) peak intensity was 58.7% higher than that of the as-deposited film. The resonant frequency and 3 dB bandwidth of a SMR filter with an unprocessed AlN film were found to be 2850 MHz and 227.81 MHz, respectively. Following laser treatment with a wavelength of 1064 nm and a power of 0.25 W, the resonant frequency changed from 2850 to 2858 MHz. Moreover, 3 dB bandwidth changed from 227.81 to 202.49 MHz and the return loss of the filter reduced from 17.28 to 16.48 dB. Overall, the results thus show that the frequency response of the SMR filter can be adjusted and the return loss reduced by means of laser treatment with an appropriate wavelength.

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Microstructure, Cyclic Deformation and Corrosion Behavior of Laser Welded NiTi Shape Memory Wires

Mirshekari

Kermanpur

Saatchi

et al. 2015

J. of Materi Eng and Perform

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The present paper reports the effects of Nd:YAG laser welding on the microstructure, phase transformation, cyclic deformation behavior, and corrosion resistance of Ti-55 wt.% Ni wire. The results showed that the laser welding altered the microstructure of the weld metal which mainly composed of columnar dendrites grown epitaxially from the fusion line. DSC results indicated that the onset of the transformation temperatures of the weld metal differed from that of the base metal. Cyclic stress-strain behavior of laserwelded NiTi wire was comparable to the as-received material; while a little reduction in the pseudo-elastic property was noted. The weld metal exhibited higher corrosion potential, lower corrosion current density, higher breakdown potential and wider passive region than the base metal. The weld metal was therefore more resistant to corrosion than the base metal.

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Property change during nanosecond pulse laser annealing of amorphous NiTi thin film

Cited by 5 publications

References 33 publications

Nitinol Spinal Vertebrae: A Favorable New Substitute

Nitinol Spinal Vertebrae: A Favorable New Substitute

Crystalline characteristics of annealed AlN films by pulsed laser treatment for solidly mounted resonator applications

Microstructure, Cyclic Deformation and Corrosion Behavior of Laser Welded NiTi Shape Memory Wires

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