Damage mechanisms evolution of TiN/Ti multilayer films with different modulation periods in cyclic impact conditions

Zhang, Honghong; Li, Zeqing; He, Weifeng; Ma, Chuansheng; Chen, Jian; Liao, Bin; Li, Yinghong

doi:10.1016/j.apsusc.2020.148366

Cited by 26 publications

(8 citation statements)

References 59 publications

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“…For each sample, the elastic modulus and hardness of the coating were calculated from the average of at least six individual indentations according to the Oliver–Pharr method. Besides, H 3 / E 2 ratio was calculated as the index to evaluate the crack resistance of the coatings, which has been mentioned in many researches [11,17].…”

Section: Methodsmentioning

confidence: 99%

“…Numerous studies investigate the damage and failure mechanism of TiN/Ti coatings by erosion test and nano-impact technique [11][12][13][14][15]. The drawback of the erosion test is that the quantity of sand particles is hard to measure and their trajectories are different, in which erosion angle and velocity of the sand particles cannot be controlled accurately.…”

Section: Introductionmentioning

confidence: 99%

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Crack resistance enhancement of gradient bias TiN/Ti multilayer coating by Ti sputtering

Fang

Chen

et al. 2021

Surface Engineering

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In this study, monolayer TiN and multilayer TiN/Ti coatings involving different modulation ratios were deposited on Ti-6Al-4V substrate. Ti interlayers in the multilayer TiN/Ti coatings were prepared under gradient negative bias of -800, -600, and -400 V, with corresponding durations of 2, 2, and 1 min. Mechanical properties and crack' s resistance of the coatings were explored. Damage morphology of coating cross-section was characterized by the focused ion beam (FIB) method. Finite element modelling was used to analyse the stress field. Multilayer TiN/Ti coatings show better impact resistance than monolayer TiN coating. Tensile stress decrease with the increase of interfaces. Gradient bias Ti interlayers restrain crack propagation by cracks deflection and branch. Erosion resistance was evaluated by sand erosion test. Crack propagation and connection account for the coatings failure: the deeper the crack propagation, the higher the erosion rate.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Crack resistance enhancement of gradient bias TiN/Ti multilayer coating by Ti sputtering

Fang

Chen

et al. 2021

Surface Engineering

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“…Cao et al reported that the erosion rate of a coating is measured at 0.1 mg•g −1 when the number of layers is two. However, the erosion rate significantly decreases to 0.085 mg•g −1 when the number of layers rises to four [33]. The erosion rate starts to increase again beyond this optimal number of layers, indicating a deterioration in the erosion resistance.…”

Section: Sand Erosion Performancementioning

confidence: 97%

Structure Optimization and Failure Mechanism of Metal Nitride Coatings for Enhancing the Sand Erosion Resistance of Aluminum Alloys

Yang,

Ren,

Zhang

et al. 2023

Coatings

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In this study, TiN/Ti coatings with various modulation ratios (TiN/Ti-4:1, TiN/Ti-1:1, and TiN/Ti-1:4) were deposited on 2A70 aluminum to improve its sand erosion performance. The structural design of ion implantation + high thickness Ti transition layer + TiN/Ti coatings was applied to alleviate the differences in physical properties between hard nitride coatings and 2A70 aluminum. Surface roughness, XRD, elastic modulus, hardness, and the sand erosion failure mechanism of each coating were evaluated. The hardness of TiN/Ti-4:1, TiN/Ti-1:1, and TiN/Ti-1:4 on aluminum was 26.99 GPa, 21.70 GPa, and 10.99 GPa. Sand erosion test results showed that TiN/Ti-1:1 had the highest erosion rates due to its rougher surface. Under a 90° incident angle, TiN/Ti-4:1 and TiN/Ti-1:4 both exhibited vertical cracks parallel to the coating growth direction in the bottom TiN layer at the initial erosion stage. Also, a lateral crack caused by TiN layer crack deflection emerged due to a higher crack resistance in the thicker Ti layer of TiN/Ti-1:4. Furthermore, in comparison with the layer-by-layer spalling failure behavior of TiN/Ti-1:4, overall spallation induced by the crack coalescence of the TiN layer was exhibited in TiN/Ti-4:1. In addition, cracks formed and intersected in the inner TiN layer in TiN/Ti-1:1 and TiN/Ti-4:1, resulting in layer-by-layer spallation under a 45° incident angle.

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“…There is an overlap of TiN and Ti 2 N diffraction peaks that appears at the main diffraction peak. Honghong Zhang et al [20] found in their study of the damage mechanism of the TiN/Ti multilayers with different modulation periods under the cyclic impact that the overlapping diffraction peaks of TiN and Ti 2 N exhibited a layered alternating subgrain structure. The appearance of Ti 2 N was owing to the absence of TiN due to insufficient nitrogen content, and the hardness of Ti 2 N was significantly lower than that of TiN.…”

Section: Surface Microstructure and Phase Compositionmentioning

confidence: 99%

Double-Glow Plasma Surface Alloying of BTi-62421S Alloys: Regulation of Microstructure Properties

et al. 2023

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In order to meet the design requirements of lightweight artillery and adopt the method of double-glow plasma nitriding to solve the problem of low hardness and poor abrasion resistance of Ti alloy, the BTi-62421S high-performance titanium (Ti) alloy was selected as the experimental material to replace gun steel. To study the effect of different nitrogen (N) concentrations on the heat resistance scouring performance of BTi-62421S high-performance Ti alloy and investigate the influence of alloying elements on the heat resistance scouring performance under the same parameters compared with the commonly used TC4 Ti alloy, argon was used as the protective gas by continuously increasing the N concentration (Ar/N2 = 1:1, 1:2, 1:3). It was found that the honeycomb structure on the surface of the sample and the thickness of the coating increased continuously, reaching a thickness of 15 μm, while the depth of the nitride particles extending from the coating to the substrate also increased, reaching a maximum depth of 26 μm. The orientation of TiN changed from 37° to 62°. The hardness of the coating showed a negative correlation with the coefficient of frictional abrasion, which significantly improved the heat-resistant scouring performance of BTi-62421S high-performance Ti alloy.

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Damage mechanisms evolution of TiN/Ti multilayer films with different modulation periods in cyclic impact conditions

Cited by 26 publications

References 59 publications

Crack resistance enhancement of gradient bias TiN/Ti multilayer coating by Ti sputtering

Crack resistance enhancement of gradient bias TiN/Ti multilayer coating by Ti sputtering

Structure Optimization and Failure Mechanism of Metal Nitride Coatings for Enhancing the Sand Erosion Resistance of Aluminum Alloys

Double-Glow Plasma Surface Alloying of BTi-62421S Alloys: Regulation of Microstructure Properties

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