Microstructure, wear and corrosion behavior of nano-CeO2 doped diamond-like carbon (DLC) composite films

Xiao, Yan; Sun, Wan‐chang; Ma, Min; Jia, Ya-peng; Liu, Jing-pei; Zhang, Tong-Qiang

doi:10.1016/j.diamond.2022.109087

Cited by 13 publications

(4 citation statements)

References 44 publications

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“…The CeO 2 promotes an increase in sp 3 -C content in the film. The DLC film at a cerium concentration of 1.16 × 10 3 mol/L is uniformly dense and has a maximum microhardness of 228.64 HV [155]. Liu et al [156] found that the coatings doped with 0.2 wt.% La 2 O 3 contained the maximum amount of HA and calcium phosphate.…”

Section: Effect Of Reos On Biological Friction Behaviormentioning

confidence: 99%

Effects of Rare Earths on Microstructure and Wear Resistance in Metal Additive Manufacturing: A Review

Xiang,

Wang,

Zheng

et al. 2024

Coatings

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Rare earth elements (REEs) doping technology can effectively control the microstructure and improve the quality and performance of materials. This paper summarizes the research progress of REEs in metal additive manufacturing (MAM) in recent years and briefly introduces the effects of REEs on the molten pool fluidity, purified structure, and interfacial bonding between the molten cladding layer and substrate. It focuses on the mechanism of the role of REEs in the refinement and homogenization of microstructures, including grain growth, columnar to equiaxed transition (CET), and elemental segregation. The reasons for the influence of REEs on the homogenization of the structure and elemental segregation are analyzed. The effects of REE type, content, and dimension on hardness and wear resistance are investigated. Finally, tribological applications of REEs in biological and high-temperature environments are summarized, and the impact of REEs-modified alloys is summarized and prospected.

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Section: Effect Of Reos On Biological Friction Behaviormentioning

confidence: 99%

Effects of Rare Earths on Microstructure and Wear Resistance in Metal Additive Manufacturing: A Review

Xiang,

Wang,

Zheng

et al. 2024

Coatings

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“…In addition, several small and long scratches were found on the track during the tests as the diamond particles were removed from the surface of the worn Ni/diamond coating, indicating that abrasive wear is the dominant wear mechanism. According to Archard's law, antiwear properties of a coating correspond to its microhardness, [44,45] and high hardness represents excellent wear behavior.…”

Section: Microhardness and Tribological Propertiesmentioning

confidence: 99%

Effect of Rough‐Surfaced Diamond Content on the Microstructure, Tribological Behavior, and Corrosion Resistance of Ni/Diamond Composite Coatings

2023

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This study fabricates certain Ni/diamond composite coatings using a coelectrodeposition method and then evaluates the effect of diamond content on the morphology, phase structure, microhardness, wear, and corrosion resistance of such coatings, while exploring their tribological and anticorrosion mechanisms. It is demonstrated that the addition of diamond can change the preferred orientation of Ni from (200) to (111), and its texture coefficient value can be boosted from 23.3% to 64.4% with the increase of diamond content. In the experiment, at a diamond content of 3 g L−1, the deposited diamond particles are more and evenly dispersed across the composite, with the microhardness of nickel‐based coatings reaching an optimum value of 613 HV. In addition, the coefficient of friction is reduced to a minimum value of 0.627, while the wear rate is kept at only 1.79 × 10−5 mm3 Nm−1, indicating a high wear resistance. Electrochemical test results demonstrate that the Ni/diamond composite coatings produced at 3 g L−1 create the maximum charge transfer resistance (5429.3 Ω cm2) and the minimum corrosion current density (2.19 μA cm−2), features that can deliver the best corrosion resistance.

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“…The operating pressure was approximately 10 −9 mBar, with a spot size of 400 µm, step energy of 20.0 eV, with a total of 10 scans, and an erosion of 15 s to reduce adsorbed atmospheric compounds. All acquired spectra were processed using a Gaussian peak type and the references are reported from NIST Standard Reference Database 20, Version 4.1, and references of reported characterizations by XPS of cerium [56][57][58][59] and O1s spectra [60,61]. Great care was put into the baseline and deconvolution assignations for the XPS spectra to avoid misinterpretations [62].…”

Section: Characterizationmentioning

confidence: 99%

Cerium Compounds Coating as a Single Self-Healing Layer for Corrosion Inhibition on Aluminum 3003

et al. 2022

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The formation of cerium hydroxide was studied, and its capacity as a corrosion inhibitor on aluminum substrates was evaluated. These particles were deposited by immersing the substrate in a bath with cerium nitrate and hydrogen peroxide. Four different immersion times were used to determine the differences in behavior from low concentrations to an excess of particles on the surface. The coatings were analyzed morphologically by scanning electron microscope (SEM) and optical microscope, and chemically by energy dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). Electrochemical corrosion analysis was studied using cyclic potentiodynamic polarization (CPP), electrochemical impedance spectroscopy (EIS), and electrochemical noise (EN). The results show that for 2 and 5 min of immersion, there was corrosion inhibition caused by the presence of cerium Ce3+ in the coating, but with excess cerium hydroxide particles, corrosion was favored. The presence of cerium particles favors corrosion at 30 s of immersion. This is the same case at 60 min, where corrosion was favored by the excess of Ce4+ particles on the surface.

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Microstructure, wear and corrosion behavior of nano-CeO2 doped diamond-like carbon (DLC) composite films

Cited by 13 publications

References 44 publications

Effects of Rare Earths on Microstructure and Wear Resistance in Metal Additive Manufacturing: A Review

Effects of Rare Earths on Microstructure and Wear Resistance in Metal Additive Manufacturing: A Review

Effect of Rough‐Surfaced Diamond Content on the Microstructure, Tribological Behavior, and Corrosion Resistance of Ni/Diamond Composite Coatings

Cerium Compounds Coating as a Single Self-Healing Layer for Corrosion Inhibition on Aluminum 3003

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