Enhanced service properties of a protective coating on a titanium alloy with an ultrafine-grained structure

Valiev, R. Z.; Modina, Y.M.; Селиванов, Константин Сергеевич; Semenova, Irina P.; Хафизова, Э. Д.; Valiev, Ruslan Z.; Savina, Ya.N.

doi:10.1016/j.matlet.2021.130781

Cited by 6 publications

(2 citation statements)

References 21 publications

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“…The average values of achieved hardness for Cr-Al-Si-N, DLC-Si, and Cr-Al-Si-N/DLC-Si coatings are 30, 23, and 24 GPa, respectively. The revealed increase in hardness should provide a higher resistance of the titanium alloy surface layer to plastic deformations [70,71]. However, high hardness values of coatings do not guarantee their high operational properties.…”

Section: Discussionmentioning

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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Section: Discussionmentioning

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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show abstract

“…However, titanium alloys still have some insufficient properties, such as poor wear resistance and poor thermal conductivity. In order to improve the properties of the titanium alloy, surface treatment is usually carried out [5][6][7][8]. Micro-arc oxidation (MAO) is a technology that uses an in situ growth of ceramic coating directly on Al, Mg, Ti, and Zr surfaces.…”

Section: Introductionmentioning

confidence: 99%

Effects of Graphene on the Wear and Corrosion Resistance of Micro-Arc Oxidation Coating on a Titanium Alloy

Zhang

Lű

et al. 2021

Metals

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In order to improve the wear and corrosion resistance of micro-arc oxidation (MAO) coating on a Ti-5Al-1V-1Sn-1Zr-0.8Mo alloy, 0–0.20 g/L graphene was added to the electrolyte to prepare micro-arc oxidation coating. The thickness, roughness, micro-morphology, and composition of the MAO coating were characterized, and the wear and corrosion resistance of the coating was tested and analyzed. The results show that with 0.05 g/L of graphene in the electrolyte, the roughness of the coating decreased from 56.76 μm to 31.81 μm. With the increase in the addition of graphene, the microstructure of the coating became more compact, the diameter of micro-holes and micro-cracks decreased, and the corrosion resistance of the coating improved. The wear tests showed that the mass loss of the coating at the early wear stage (0~100 revolutions) was greater than that at the later stage (100~250 revolutions), and the wear resistance of the coating obtained by the addition of 0.10 g/L of graphene was the highest. With 0.10 g/L of graphene, the adhesion force between the coating and the substrate alloy is the largest, reaching 57.1 N, which is 9.98 N higher than that without graphene. After salt spray corrosion for 480 h, the coating with graphene has better corrosion resistance than that of a graphene-free coating.

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Evolution of microstructure and mechanical properties in large-scaled complex titanium alloy castings during service based on quantitative abnormal microstructure analysis

Yu,

Li,

et al. 2024

Materials Today Communications

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Enhanced service properties of a protective coating on a titanium alloy with an ultrafine-grained structure

Cited by 6 publications

References 21 publications

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

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

Effects of Graphene on the Wear and Corrosion Resistance of Micro-Arc Oxidation Coating on a Titanium Alloy

Evolution of microstructure and mechanical properties in large-scaled complex titanium alloy castings during service based on quantitative abnormal microstructure analysis

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