Mechanical failure of CrN/Cu/CrN interfacial regions under tensile loading

Zhang, Xiaoman; Mu, Yang; Dodaran, M.; Shao, Shuai; Moldovan, Dorel; Meng, W. J.

doi:10.1016/j.actamat.2018.08.046

Cited by 22 publications

(7 citation statements)

References 45 publications

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“…Therefore, only a brief description of the model formulation is given below. The present authors have utilized this model to analyze the tensile deformation characteristics of nanoscale metal adhesion layers sandwiched between ceramic layers [38].…”

Section: (F))mentioning

confidence: 99%

“…where and h 0 is the initial strain hardening rate, due to dislocation accumulations. To calibrate the associated kinematic constants for single crystal Al, material point simulations comprising 500 grains using mean field assumptions were performed [33,38]. The calibrated constants, along with the elastic constants of Al, are shown in the TSL OIM software.…”

Section: (F))mentioning

confidence: 99%

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Grain-size affected mechanical response and deformation behavior in microscale reverse extrusion

et al. 2019

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Section: (F))mentioning

confidence: 99%

Section: (F))mentioning

confidence: 99%

Grain-size affected mechanical response and deformation behavior in microscale reverse extrusion

et al. 2019

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“…Composite coating design and multilayer coating architecture are two useful strategies in tailoring coating stress profile inside the coating, improving coating toughness, and enhancing coating adhesion strength to the substrate 12–17 . And these properties could be more prominent when coating is composed of materials with dissimilar characteristic, such as hard ceramics and ductile metals 18–20 . Comparing with other metals, Nickel (Ni) has good ductility, antioxidation, and high corrosion resistance 21,22 .…”

Section: Introductionmentioning

confidence: 99%

First‐principle calculations of CrN(200)/Ni(111) interface: Atomic structure, stability, and electronic properties

Zhang

Chen

et al. 2020

Surface & Interface Analysis

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Atomic structure, adhesion energy, and electronic properties of the bonding nature at CrN(200)/Ni(111) interfacial region are studied by first‐principle calculations based on density functional theory (DFT). A new method for building the heterostructure of CrN(200)/Ni(111) is proposed to solve the large lattice mismatching between CrN(200) and Ni(111) slab. Three models (OT, ST, and TL) with different interface distance are built up, and the total energy for each of them is calculated. Comparing with other stacking sequence, TL sites with 1.9‐Å spacing at the interfacial region shows the biggest value of adhesion energy after geometry relaxation. Furthermore, the contour of charge density, partial charge density of states, and Bader charge values of the TL sites with 1.9‐Å spacing are plotted out and calculated. Results indicate that covalency bonding between Ni and N ions and metallic bonding between Ni and Cr atoms are formed at the interfacial region.

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“…Among various wearable strain sensors, nano-metal films were frequently applied as the sensitive component in the sensor due to their excellent electrical conductivity and ductility [15]. However, external stresses can easily lead to the initiation of cracking in the surface of metal films, which results in a loss of durability, stability, and sensitivity for the device [16,17]. To solve the problem of circuit breaking caused by metal cracks, metal nanowires spin-coated on the polymer substrates were used instead of a deposited metal film [18,19].…”

Section: Introductionmentioning

confidence: 99%

Patterned Metal/Polymer Strain Sensor with Good Flexibility, Mechanical Stability and Repeatability for Human Motion Detection

et al. 2019

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Wearable health monitoring smart systems based on flexible metal films are considered to be the next generation of devices for remote medical practice. However, cracks on the metallic surface of the films and difficulty in repeatability are the key issues that restrict the application of such wearable strain sensors. In this work, a flexible wearable strain sensor with high sensitivity and good repeatability was fabricated based on a patterned metal/polymer composite material fabricated through nanoimprint lithography. The mechanical properties were measured through cyclic tension and bending loading. The sensor exhibited a small ΔR/R0 error line for multiple test pieces, indicating the good mechanical stability and repeatability of the fabricated device. Moreover, the sensor possesses high sensitivity with gauge factors of 10 for strain less than 50% and 40 for strain from 50% to 70%. Various activities were successfully detected in real-time, such as swallowing, closing/opening of the mouth, and multi-angle bending of elbow, which illustrates the proposed sensor’s potential as a wearable device for the human body.

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Mechanical failure of CrN/Cu/CrN interfacial regions under tensile loading

Cited by 22 publications

References 45 publications

Grain-size affected mechanical response and deformation behavior in microscale reverse extrusion

Grain-size affected mechanical response and deformation behavior in microscale reverse extrusion

First‐principle calculations of CrN(200)/Ni(111) interface: Atomic structure, stability, and electronic properties

Patterned Metal/Polymer Strain Sensor with Good Flexibility, Mechanical Stability and Repeatability for Human Motion Detection

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