Deformation behavior of TiO2 films deposited on NiTi shape memory alloy after tensile and water-bath heating tests

Xie, Demin; Yu, Fei; Wang, J.B.; Su, Yijin; Jing, Fengjuan; Leng, Y.X.; Huang, Nan

doi:10.1016/j.surfcoat.2021.127151

Cited by 9 publications

(6 citation statements)

References 24 publications

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“…During martensitic phase transformation, the NiTi alloy transforms from the austenite phase (body‐centered cubic B2 structure) to the martensite phase (monoclinic B19′ structure), which inevitably modifies the film/NiTi interface structure and interface bonding; however, these physiochemical changes occur at the interface and are considerably difficult to observe or analyze in the laboratory. Some studies have reported the deformation and failure of TiO 2 films on the surface of NiTi, which undergo hyperelasticity and shape memorization deformation 6,11 . However, research on the effect of NiTi phase transformation to film/substrate interface bond and the failure mechanism from atomic or electronic scales have rarely been reported.…”

Section: Introductionmentioning

confidence: 99%

“…Some studies have reported the deformation and failure of TiO 2 films on the surface of NiTi, which undergo hyperelasticity and shape memorization deformation. 6,11 However, research on the effect of NiTi phase transformation to film/ substrate interface bond and the failure mechanism from atomic or electronic scales have rarely been reported.…”

Section: Introductionmentioning

confidence: 99%

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Atomic configuration, electronic structure, and work of adhesion of TiN(111)//B2‐NiTi(110) and TiN(111)//B19′‐NiTi(010) interfaces: Insights from first‐principles simulations

Xie

Wang

Wei

et al. 2022

Surface & Interface Analysis

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In this paper, the atomic configuration, electronic structure, and work of adhesion for TiN(111)//B2‐NiTi(110) and TiN(111)//B19′‐NiTi(010) interfaces were investigated by first‐principles calculations based on density functional theory (DFT), which aim to provide a theoretical guidance for analyzing the service reliability of TiN films modified NiTi alloy devices. The results of this paper indicated that a hollow‐site stacking structure was formed on the interface when Ti and N were the terminal atoms on two sides. Such interfaces demonstrated a stronger bonding performance and a more stable structure than that with Ni and Ti as the terminal atoms. The work of adhesion of the TiN(111)//B19′‐NiTi(010) interface was 17.47 J/m2, which is greater than the work of fracture of TiN(111) (6.73 J/m2), whereas the work of adhesion of the TiN(111)//B2‐NiTi(110) interface was found to reach 5.49 J/m2, which is lower than the work of fracture of TiN(111). The models of the work of adhesion between the two interfaces indicate that there are significant bond strength changes in the TiN/NiTi interface, when the NiTi substrate undergoes martensitic transformation. The results of this paper contribute significantly to the service reliability analysis of TiN films coated on NiTi alloy devices.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Atomic configuration, electronic structure, and work of adhesion of TiN(111)//B2‐NiTi(110) and TiN(111)//B19′‐NiTi(010) interfaces: Insights from first‐principles simulations

Xie

Wang

Wei

et al. 2022

Surface & Interface Analysis

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“…X. Dong et al (2021) studied the uniaxial tensile testing and water bath heating on TiO2 films with thicknesses of approximately 100 and 50 nm which were deposited on dumbbell-shaped plate samples of an NiTi shape memory alloy [13]. A.…”

Section: Figurementioning

confidence: 99%

Mechanical Properties of NiTi Based Shape Memory Alloy used in Manufacturing of Mars Rover Wheels: Short Review

Parmar¹,

Mishra²

2022

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Shape memory alloys (SMA) are innovatively designed for engineering applications including, but not limited to, medical devices, actuators, micromechanical systems, deployable structures, and elastocaloric devices. Prior to the manufacture of any component for the above mentioned applications, an extensive simulation study is recommended as the basic properties are required to be filled in the software. The unavailability of to-the-point literature makes this task difficult for researches. In this paper, an overview of binary NiTi based shape memory alloy is given, where its characteristic physical properties i.e. shape memory effect and super elastic effect, and mechanical properties like fatigue failure, stress-strain characteristics and yield and ultimate strength is stated for several different specimens prepared using thermomechanical methods.

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“…These findings show that partial reinforcement with Al 2 O 3 improves the shape memory effect of Cu-Al-Ni SMAs substantially. Xie Dong et al, [11] studied TiO 2 coatings with thicknesses of 100 and 50 nm on NiTi shape memory alloys were created using high-power impulse magnetron sputtering (SMA-NiTi). Under uniaxial strain, the NiTi substrate transitioned from B 2 to B 19 ′ martensitic phase.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Ceo2 Addition on Transformation Temperatures and Wear Resistance of Cu-Al-Ni Shape Memory Alloys

Hammadi¹,

Adnan²,

Alsarraf³

2022

ETJ

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 Enhance Transformations Temperature for SMAs by adding CeO 2 particles with different percentages.  Enhance Wear behavior for SMAs BY adding CeO 2 particles with different percentages.  Enhance Hardness for SMAs BY adding CeO 2 particles with different percentages. SMAs can switch from one crystallographic structure to another in response to temperature or stress stimuli. When SMAs are exposed to mechanical cyclic stress, they can absorb and discharge mechanical energy by experiencing a reversible hysteretic shape change. SMAs are widely used for sensing, actuation, impact absorption, and vibration damping. This work studied the effect of CeO 2 addition on the transformation temperature and wear resistance of Cu-Al-Ni SMAs. WhereCeO 2 was added at different percent's 0.5, 1, and 3 wt% to the base alloy, followed by casting and homogenization at 900 o C. Some tests were carried out: Differential scanning calorimeter, Optical Microscope, Scanning Electron microscopy, Energy dispersion spectrometer, X-Ray Diffraction, and Wear and Hardness tests. OM and SEM tests reveal that both phases of martensite β and γ are found. Also, the additions of CeO 2 show a visible effect on phase formation and transformation temperatures. It was observed that increasing of CeO2 particles in Cu-based SMAs owing to improve interfacial bonding between matrix and reinforcement and also observed that the variants become thicker with increasing in percent. Additions of different percentages of cerium oxide increase the hardness of Cu-Al-Ni SMAs. Due to the addition of CeO 2 particles, the sample's wear rate decreases compared to pure SMAs.

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Deformation behavior of TiO2 films deposited on NiTi shape memory alloy after tensile and water-bath heating tests

Cited by 9 publications

References 24 publications

Atomic configuration, electronic structure, and work of adhesion of TiN(111)//B2‐NiTi(110) and TiN(111)//B19′‐NiTi(010) interfaces: Insights from first‐principles simulations

Atomic configuration, electronic structure, and work of adhesion of TiN(111)//B2‐NiTi(110) and TiN(111)//B19′‐NiTi(010) interfaces: Insights from first‐principles simulations

Mechanical Properties of NiTi Based Shape Memory Alloy used in Manufacturing of Mars Rover Wheels: Short Review

The Effect of Ceo2 Addition on Transformation Temperatures and Wear Resistance of Cu-Al-Ni Shape Memory Alloys

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