Corrosion behavior and passive stability of multilayer DLC-Si coatings

Fayed, Saad M.; Chen, Dongxu; Li, Shengli; Zhou, Yanwen; Wang, Hongbin; Sadawy, M.M.

doi:10.1016/j.surfcoat.2021.128001

Cited by 17 publications

(4 citation statements)

References 52 publications

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“…This was mainly due to two reasons. On the one hand, Si doping can promote the hybridization of sp 3 and inhibit the formation of sp 2 clusters [21,27]. On the other hand, Si doping into a multilayer (Si-DLC) 40 film reduces the internal stress [28].…”

Section: Microstructures and Surface Morphologies Of Multilayer Si-dl...mentioning

confidence: 99%

Investigation of the Tribological Properties and Corrosion Resistance of Multilayer Si-DLC Films on the Inner Surfaces of N80 Steel Pipes

Wang,

Zhang,

et al. 2024

Coatings

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In order to solve the problem of the corrosion and wear of N80 metal pipelines exposed to corrosive media and abrasive sand during the development of petroleum resources, the proposed solution involves utilizing HC-PECVD technology to deposit a series of multilayer Si-DLC films with varying thicknesses on the inner surfaces of the N80 steel pipes. This investigation systematically explored the microstructure, mechanical properties, tribological features, and corrosion resistance of the multilayer Si-DLC films. Remarkably, after coating the multilayer (Si-DLC)40 film on the inner wall of the N80 tube, the friction coefficient decreased from 0.7~0.75 to 0.2~3, and the wear rate decreased by two orders of magnitude. In addition, the corrosion current decreased by 50%, and the impedance doubled in a 3.5 wt% NaCl solution saturated with CO2. Thus, the multilayer (Si-DLC)40 film on the inner wall of the N80 tube exhibited superior tribological properties and exceptional corrosion resistance. These findings are anticipated to furnish valuable data and technical insights for mitigating corrosion in N80 steel pipes during petroleum exploitation.

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Section: Microstructures and Surface Morphologies Of Multilayer Si-dl...mentioning

confidence: 99%

Investigation of the Tribological Properties and Corrosion Resistance of Multilayer Si-DLC Films on the Inner Surfaces of N80 Steel Pipes

Wang,

Zhang,

et al. 2024

Coatings

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“…In gas-phase deposition, the chemical reaction occurs near the sample surfaces, resulting in the deposition of DLC coating. Hydrogen and silicon atoms are contained along with carbon atoms in the structure of DLC coatings [61][62][63]. The general view and internal design of the technological unit are shown in Figure 2.…”

Section: Characteristics Of Titanium Alloy Samplesmentioning

confidence: 99%

Influence of Cr-Al-Si-N and DLC-Si Thin Coatings on Wear Resistance of Titanium Alloy Samples with Different Surface Conditions

Volosova,

Lyakhovetsky,

Mitrofanov

et al. 2023

Coatings

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The influence of Cr-Al-Si-N, DLC-Si, and Cr-Al-Si-N/DLC-Si thin coatings deposited on titanium alloy (Ti-Al-Zr-Sn-Nb system) samples with different surface reliefs on wear resistance under abrasion and fretting conditions was investigated. The influence of coatings on the initial microrelief after finishing milling and lapping with micro-grained abrasive was studied by profilometry. The Martens hardness (H) and the elastic modulus (E) were determined through nanoindentation. The H/E ratio was 0.08, 0.09, and 0.13, respectively. The adhesion bond strength and H/E ratio relationship was revealed using a scratch testing analysis. Volumetric wear after 20 min of abrasive exposure was reduced by 11, 25, and 31 times for Cr-Al-Si-N, DLC-Si, and Cr-Al-Si-N/DLC-Si coatings compared to uncoated ones after milling and by 15, 32, and 35 times after lapping. Volumetric wear under fretting conditions was reduced by 1.8 and 4 times for Cr-Al-Si-N coating after milling and lapping. It was reduced by tens of times for DLC-Si coating and by hundreds of times for Cr-Al-Si-N/DLC-Si coating. The Cr-Al-Si-N/DLC-Si coating (a thickness of 3.1 ± 0.15/2.0 ± 0.1 µm) is characterized by the best combination of hardness (24 ± 1 GPa), elastic modulus (185 ± 8 GPa), and friction coefficient (0.04–0.05 after milling and 0.1 after lapping) and ensures maximum wear resistance under a wide range of loads. The novelty of the work is that those coatings were not practically under study concerning the deposition on the titanium alloy regarding typical mechanical loads such as abrasive and fretting wear but are of interest to the aviation and aerospace industry.

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“…Li et al [11] found that the optimized Cr/GLC multilayer interface can effectively hinder the formation of penetration defects, reduce the generation of corrosion channels, inhibit the penetration of corrosion ions, and significantly enhance the corrosion resistance of the film. Fayed et al [12] formed multilayer DLC-Si films on aluminum alloy by the ionophore-enhanced chemical vapor deposition (PECVD) technique. The multilayer film introduced a new interface that prevented the penetration of Cl − ions.…”

Section: Introductionmentioning

confidence: 99%

Tribological Properties and Corrosion Resistance of Multilayer a-C:H:Ti Films at Different Target Currents

Huang

Wang

et al. 2023

Metals

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To meet the requirements of friction and corrosion resistance performance of helicopter transmission bearings under harsh environments, Ti/TiN/Ti-DLC multilayer composite films were prepared on a 40Cr15Mo2VN substrate by a non-equilibrium magnetron sputtering technique. The effects of different titanium currents on the structure, mechanical properties, and friction properties of the films were investigated by SEM, Raman spectroscopy, and nanoindentation. Moreover, the tribological and corrosion resistance of developed films under acidic conditions were investigated. The results show that the sp3-C/sp2-C ratio in the films gradually decreases with increasing Ti current from 0 A to 2 A, leading to decreased hardness and elastic modulus. The bonding force of the DLC films also gradually increases with increasing Ti current and reaches the maximum value of 41.69 N at 2 A; the friction coefficient of the films gradually decreases under a load of 20 N. In summary, the best performance of thin film at Ti-2 A was compared with the corrosion and wear performance of thin film and substrate in acetic acid solution and aqueous solution at Ti-2 A. The wear amount of thin film and substrate in aqueous solution is significantly lower than in acetic acid solution, and the corrosion potential of thin film is higher than that of substrate in both solutions, which can play a protective role against the substrate.

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Corrosion behavior and passive stability of multilayer DLC-Si coatings

Cited by 17 publications

References 52 publications

Investigation of the Tribological Properties and Corrosion Resistance of Multilayer Si-DLC Films on the Inner Surfaces of N80 Steel Pipes

Investigation of the Tribological Properties and Corrosion Resistance of Multilayer Si-DLC Films on the Inner Surfaces of N80 Steel Pipes

Influence of Cr-Al-Si-N and DLC-Si Thin Coatings on Wear Resistance of Titanium Alloy Samples with Different Surface Conditions

Tribological Properties and Corrosion Resistance of Multilayer a-C:H:Ti Films at Different Target Currents

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