Preparation, characterization and mechanical properties of microarc oxidation coating formed on titanium in Al(OH)3 colloidal solution

Li, Y.; Ye, Bin; Long, Beiyu; Tian, Hongwei; Wang, B.

doi:10.1016/j.apsusc.2012.01.170

Cited by 13 publications

(5 citation statements)

References 12 publications

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“…Commonly used surfacestrengthening processes for titanium alloys include thermal oxidation, laser melting, ion implantation, anodic oxidation and micro-arc oxidation (MAO) [9][10][11][12]. Among them, microarc oxidation technology has attracted a lot of attention from scholars all over the world because of its easy operation, green credentials and excellent coating performance [13][14][15][16]. By choosing the electrolyte solution and adjusting the electrical parameters of the micro-arc oxidation process, a highly dense and well-bonded ceramic-phase oxidation coating can be grown on the surface of Ti, Al, Mg and their alloy substrates, which can significantly improve the surface hardness and wear and corrosion resistance [17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Effect of α-Al2O3 Additive on the Surface Micro-Arc Oxidation Coating of Ti6Al4V Alloy

Chen

Yuan

2023

Nanomaterials

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α-Al2O3 nanoparticles can enter a micro-arc oxidation coating and participate in the coating-formation process through chemical reaction or physical–mechanical combination in the electrolyte. The prepared coating has high strength, good toughness and excellent wear and corrosion resistance. In this paper, 0, 1, 3 and 5 g/L of α-Al2O3 nanoparticles were added to a Na2SiO3-Na(PO4)6 electrolyte to study the effect on the microstructure and properties of a Ti6Al4V alloy micro-arc oxidation coating. The thickness, microscopic morphology, phase composition, roughness, microhardness, friction and wear properties and corrosion resistance were characterized using a thickness meter, scanning electron microscope, X-ray diffractometer, laser confocal microscope, microhardness tester and electrochemical workstation. The results show that surface quality, thickness, microhardness, friction and wear properties and corrosion resistance of the Ti6Al4V alloy micro-arc oxidation coating were improved by adding α-Al2O3 nanoparticles to the electrolyte. The nanoparticles enter the coatings by physical embedding and chemical reaction. The coatings’ phase composition mainly includes Rutile-TiO2, Anatase-TiO2, α-Al2O3, Al2TiO5 and amorphous phase SiO2. Due to the filling effect of α-Al2O3, the thickness and hardness of the micro-arc oxidation coating increase, and the surface micropore aperture size decreases. The roughness decreases with the increase of α-Al2O3 additive concentration, while the friction wear performance and corrosion resistance are improved.

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Section: Introductionmentioning

confidence: 99%

Effect of α-Al2O3 Additive on the Surface Micro-Arc Oxidation Coating of Ti6Al4V Alloy

Chen

Yuan

2023

Nanomaterials

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“…Titanium and its alloys are widely used because of their high strength/weight ratio, low density, good biocompatibility, and high corrosion resistance [1,2]. The corrosion resistance of titanium-based materials arises from the native oxide layer (TiO 2 ) formed at the surface [3].…”

Section: Introductionmentioning

confidence: 99%

Characterization of micro-arc oxidation coatings on Ti6Al4V with addition of SiC particle

Lian

Dai

Zhang

2020

Mater. Res. Express

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In the present work, particles of SiC were applied to the micro-arc oxidation (MAO) treatment of Ti6Al4V, characterization of MAO coatings with different SiC particle concentration were evaluated. X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM) results show that the structure and morphology of MAO ceramic coatings could change with different amounts of SiC in the electrolyte. Both of the number and size of the pores on the ceramic coating surface were decreased, while the layer thickness increased with the increase in SiC particles in the electrolyte. A dense doublelayer structure coating composed of a Ti-based layer and a SiC-based layer with a thickness of about 40 μm was prepared. It was shown that the addition of SiC particles participated in the process of microarc oxidation and changed the microstructure of MAO coating.

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“…Our group invented a new manufacture process on pure rutile MAO coating produce. We improve the electrolyte and electrical parameters and pure rutile MAO coating produce can be produced directly [7][8][9][10] . The coating produced has the advantage of large thickness, good compactability, high hardness and high modulus of elasticity.…”

Section: Introductionmentioning

confidence: 99%

Study on Manufacture Process, Micro-Hardness and Hall-Petch Relation of Pure Rutile Phase TiO<sub>2</sub> MAO Coating

Song

2015

AMM

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A pure rutile TiO2coating was produced on titanium substrate by MAO processing in Al (OH)3colloidal solution. It is proved that Al (OH)3in the solution blocks the produce of anatase phase TiO2. The rutile MAO coating has the advantage of high micro-hardness. Phase composition of the coating is analyzed by XRD in the study. Relation between rain size and micro-hardness of the coating is discussed and it is proved that the two parameters conform to the Hall-Petch relation.

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Preparation, characterization and mechanical properties of microarc oxidation coating formed on titanium in Al(OH)3 colloidal solution

Cited by 13 publications

References 12 publications

Effect of α-Al2O3 Additive on the Surface Micro-Arc Oxidation Coating of Ti6Al4V Alloy

Effect of α-Al2O3 Additive on the Surface Micro-Arc Oxidation Coating of Ti6Al4V Alloy

Characterization of micro-arc oxidation coatings on Ti6Al4V with addition of SiC particle

Study on Manufacture Process, Micro-Hardness and Hall-Petch Relation of Pure Rutile Phase TiO<sub>2</sub> MAO Coating

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