Enhanced tribological behavior of anodic films containing SiC and PTFE nanoparticles on Ti6Al4V alloy

Li, Songmei; Zhu, Mengqi; Liu, Jianhua; Yu, Mei; Wu, Liang; Zhang, Jindan; Liang, Hao

doi:10.1016/j.apsusc.2014.07.088

Cited by 28 publications

(10 citation statements)

References 32 publications

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“…Currently, titanium and titanium alloys are widely used in implant surgery for orthopedic prostheses production [1][2][3]. The use of titanium is due to a number of its unique properties, such as high strength and corrosion resistance, leading to significant bioinertness of this material [4][5][6]. However, titanium alloys have several significant drawbacks.…”

Section: Introductionmentioning

confidence: 99%

Bioactive Coatings Formed on Titanium by Plasma Electrolytic Oxidation: Composition and Properties

et al. 2020

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Bioactive coatings on VT1-0 commercially pure titanium were formed by the plasma electrolytic oxidation (PEO). A study of the morphological features of coatings was carried out using scanning electron microscopy. A composition of formed coatings was investigated using energy-dispersive spectroscopy and X-ray diffractometry analysis. It was shown that PEO-coatings have calcium phosphate in their composition, which increases the bioactivity of the surface layer. Electrochemical properties of the samples were studied by potentiondynamic polarization and electrochemical impedance spectroscopy in different physiological media: simulated body fluid and minimum essential medium. The data of electrochemical studies indicate more than 15 times decrease in the corrosion current density for the sample with coating (5.0 × 10−9 A/cm2) as compared to the bare titanium (7.7 × 10−8 A/cm2). The formed PEO-layers have elastoplastic properties close to human bone (12–30 GPa) and a lower friction coefficient in comparison with bare metal. The wettability of PEO-layers increased. The contact angle for formed coatings reduced by more than 60° in comparison with bare metal (from 73° for titanium to 8° for PEO-coating). Such an increase in surface hydrophilicity contributes to the greater biocompatibility of the formed coating in comparison with commercially pure titanium. PEO can be prospective as a method for improving titanium surface bioactivity.

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Section: Introductionmentioning

confidence: 99%

Bioactive Coatings Formed on Titanium by Plasma Electrolytic Oxidation: Composition and Properties

et al. 2020

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“…Li et al formed the composite film including SiC nanoparticles on Ti6Al4V alloy by anodization, which also exhibited good anti-wear properties [19]. Hard nanoparticles can change the friction form from sliding to rolling during the friction process, and thereby decrease the friction coefficient and the wear rate [20]. Aliofkhazraei et al by further adding two kind of hard nanoparticles in composite anodic films proved that Si 3 N 4 and Al 2 O 3 have a synergistic effect and can effectively reduce the wear rate of titanium alloy [21].…”

Section: Introductionmentioning

confidence: 99%

Influence of Electrolyte Temperature on Morphology and Properties of Composite Anodic Film on Titanium Alloy Ti-10V-2Fe-3Al

et al. 2020

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In this study, we introduced a novel environmentally-friendly electrolyte consisting of polytetrafluoroethylene (PTFE) nanoparticles and malic acid solution to fabricate composite anodic film on Ti-10V-2Fe-3Al alloy at different electrolyte temperatures. The morphology revealed that the PTFE nanoparticles were successfully incorporated into composite anodic films and embedded preferentially in the pores and cracks. Their performances (wear, corrosion and hydrophobicity) were evaluated via electrochemical tests, ball on disc tests, and a contact angle (CA) meter. Compared to the substrate of titanium alloy Ti-10V-2Fe-3Al, the composite anodic films exhibited the low wear rates, high corrosion resistance and good hydrophobicity. However, the microstructure and morphology of the films were affected by the electrolyte temperature. As a result, their performances were changed greatly as a function of the temperature and the film fabricated at 20 °C exhibited better performances (CA = 131.95, icorr = 6.75 × 10−8 A·cm−2, friction coefficient = 0.14) than those at other electrolyte temperatures. In addition, the corresponding lubrication mechanism of the composite anodic films was discussed.

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“…In order to improve the properties of oxide films, different nanoparticle additives suspended in the electrolyte were incorporated into the film to produce optimized microstructures. Such particles include SiC, 10 TiO 2 , 11 ZrO 2 , 12 CeO 2 , 13 Al 2 O 3 , 14 and graphene. 15 Lu et al found that the photocatalytic activity was achieved via the introduction of anatase (TiO 2 particles) to the plasma electrolytic oxidation bath.…”

Section: Introductionmentioning

confidence: 99%

“…shows the surface morphologies of the anodic composite films obtained on specimens at(5,10,20) s and(1,2,5,10,20,30 and 40) min. The coating compositions at various points and areas selected on the specimen surface with different intervals are listed inTable 1.…”

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Formation of a composite anodic oxidation film containing Al2O3 particles on the AZ31 magnesium alloy

Yin-ning¹,

Yongyao²,

Linjiang³

et al. 2019

Mater. Tehnol.

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A composite film containing Al2O3 nanoparticles was successfully anodized on the AZ31 alloy using an alkaline NaOH-Na2SiO3 solution. The formation process and the mechanism of the nanoparticles were investigated by means of XRD, SEM and EDS characterization. The addition of nanoparticles does not change the basic process of anodizing magnesium alloys. The thickness change of the oxide films is consistent with the voltage variation and the oxidation time. During the first 5 seconds of anodization, the sample weight decreases, indicating that Mg dissolution dominates this process. Subsequently, the sample weight begins to increase and the film development plays an important role. The oxide film is formed by Al2O3 nanoparticles absorbed on the surface of the magnesium matrix. The nanoparticles have been involved in the growth process of the oxide films. The composite oxide film is composed of MgO, Mg2SiO4 and a-Al2O3 phases. In the process of composite oxidation, Al2O3 nanoparticles can fill in the pores and the cracks of the oxide films after being absorbed on the surface of the film. In addition, they can also be continuously captured in the oxide film, forming an oxide film structure reinforced by Al2O3 nanoparticles and leading to enhanced performance.Avtorji opisujejo uspe{ni nastanek kompozitnega filma, ki vsebuje Al2O3 nanodelce na povr{ini Mg zlitine AZ31 s pomo~jo anodne oksidacije v alkalni raztopini NaOH-Na2SiO3. Potek in mehanizem nastanka nanodelcev so raziskovali in okarakterizirali z uporabo XRD, SEM in EDS. Dodatek nanodelcev ni spremenil osnovnega procesa anodizacije Mg zlitin. Debelina oksidnega filma se ujema s spremembo elektri~ne napetosti in~asa oksidacije. Prvih 5 sekund anodizacije se masa vzorcev manj{a, kar ka`e na to, da dominira proces raztapljanja Mg. Sledi nara{~anje mase vzorcev, kar pomeni, da pomembno vlogo v procesu predstavlja tvorba oksidnega filma. Nastali oksidni film vsebuje nanodelce Al2O3, absorbirane na povr{ini v Mg matrici. Nanodelci so vklju~eni v proces rasti oksidnega filma. Kompozitni oksidni film je sestavljen iz MgO, Mg2SiO4 in a-Al2O3. V procesu nastajanja oksidnega filma nanodelci Al2O3 zapolnijo pore in razpoke potem, ko se absorbirajo na povr{ino filma. Dodatno so lahko le-ti stalno ujeti v oksidnem filmu, kar oja~a njegovo strukturo in izbolj{a njegove lastnosti. Klju~ne besede: zlitina na osnovi magnezija, kompozitni oksidni film, nastanek Al2O3 delcev

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Enhanced tribological behavior of anodic films containing SiC and PTFE nanoparticles on Ti6Al4V alloy

Cited by 28 publications

References 32 publications

Bioactive Coatings Formed on Titanium by Plasma Electrolytic Oxidation: Composition and Properties

Bioactive Coatings Formed on Titanium by Plasma Electrolytic Oxidation: Composition and Properties

Influence of Electrolyte Temperature on Morphology and Properties of Composite Anodic Film on Titanium Alloy Ti-10V-2Fe-3Al

Formation of a composite anodic oxidation film containing Al2O3 particles on the AZ31 magnesium alloy

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