Tribological properties of PEO nanocomposite coatings on titanium formed in electrolyte containing ketoconazole

Sharifi, Hossein; Mahmood, Asif; Darband, Ghasem Bratai; Rouhaghdam, A. Sabour

doi:10.1016/j.triboint.2016.06.013

Cited by 42 publications

(11 citation statements)

References 45 publications

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“…sodium silicate (Na 2 SiO 3 ) with trisodium phosphate (Na 3 PO 4 ), and sodium aluminate (NaAlO 2 ) [5] calcium hypophosphite Ca(H 2 PO 2 ) 2 with phosphoric acid H 3 PO 4 [9] sodium phosphate monobasic monohydrate (NaH 2 PO 4 ·H 2 O) with calcium acetate hydrate (Ca(CH 3 COO) 2 ·H 2 O) and strontium hydroxide 8-hydrate (Sr(OH) 2 ·8H 2 O) [18] calcium acetate Ca(CH 3 COO) 2 2H 2 O, and Na 2 SiO 3 , ethylenediaminetetraacetic acid (EDTA), and sodium hydroxide NaOH [19] tri-sodium orthophosphate (Na 3 PO 4 ·12H 2 O) with potassium hydroxide (KOH) and di-sodium tetra borate (Na 2 B 4 O 7 ·10H 2 O), and trisodium citrate dihydrate (C 6 H 5 Na 3 O 7 ·2H 2 O), and sodium meta silicate nonahydrate (Na 2 SiO 3 ·9H2O) [20] disodium phosphate (Na 2 HPO 4 ) [21] ammonium sulfate solution ((NH 4 ) 2 SO 4 ) [22] sodium dihydrogen phosphate (NaH 2 PO 4 ) with calcium acetate (Ca(CH 3 COO) 2 ) and strontium(II) acetate (Sr(CH 3 COO) 2 ) [23] sodium hydroxide (NaOH) with sodium phytate (Na 12 Phy) [24] sodium phosphate heptahydrate (Na 2 HPO 4 ·7H 2 O), with α-Al 2 O 3 and ketoconazole [25] trisodium phosphate (Na 3 PO 4 ) with hydrated sodium borate (Na 2 B 4 O 7 ), and sodium tungstate (Na 2 WO 4) [26] ethylenediaminetetraacetic acid (EDTA) with calcium (Ca(CH 3 COO) 2 ), Ca(H 2 PO 4 ) 2 , sodium hydroxide (NaOH) [27] It should be pointed out that, in the majority of the literature, the presence of titanium oxides in PEO coatings obtained on titanium in aqueous solutions is most often reported. However, Sowa et.…”

Section: Electrolytesmentioning

confidence: 99%

Characterization of Porous Phosphate Coatings Enriched with Calcium, Magnesium, Zinc and Copper Created on CP Titanium Grade 2 by Plasma Electrolytic Oxidation

Rokosz

Hryniewicz

Kacalak

et al. 2018

Metals

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Abstract:In the paper, the effect of voltage increase (from 500 V DC up to 650 V DC ) on the structure and chemical composition of the porous coating on titanium made by Plasma Electrolytic Oxidation is presented. Phosphates-based coatings enriched with calcium, magnesium, zinc, and copper in electrolyte based on 1 L of 85% concentrated H 3 PO 4 , with additions of Ca(NO 3 ) 2 ·4H 2 O, and Mg(NO 3 ) 2 ·6H 2 O, and Zn(NO 3 ) 2 ·6H 2 O, and Cu(NO 3 ) 2 ·3H 2 O, are described. The morphology and chemical and phase composition are evaluated using SEM, EDS, XRD, XPS, GDOES, and CLSM. Based on these analyses, it was found that PEO coatings are porous and enriched with calcium, magnesium, zinc and copper. They consist mainly of the amorphous phase, which is more visible for higher voltages; this is correlated with an increase in the total PEO coating thickness (the higher the voltage, the thicker the PEO coating). However, for 650 V DC , an amorphous phase and titanium substrate were also recorded, with a signal from Ti 2 P 2 O 7 crystalline that was not observed for lower voltages. It was also found that all obtained coatings may be divided into three sub-layers, i.e., porous, semiporous, and transitional.

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Section: Electrolytesmentioning

confidence: 99%

Characterization of Porous Phosphate Coatings Enriched with Calcium, Magnesium, Zinc and Copper Created on CP Titanium Grade 2 by Plasma Electrolytic Oxidation

Rokosz

Hryniewicz

Kacalak

et al. 2018

Metals

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show abstract

“…The addition of the stearic and myristic acid was observed to make the coating hydrophobic in nature and further improved the corrosion resistance. Sharifi et al [ 134 ] employed PEO treatment on pure Ti by incorporating α -Al 2 O 3 nanoparticles along with a non-toxic corrosion inhibitor, ketoconazole, to produce a dense nanocomposite coating. The presence of ketoconazole aided in the absorption of the nanoparticles made the coating dense, and reduced its porosity.…”

Section: Introductionmentioning

confidence: 99%

Plasma Electrolytic Oxidation (PEO) Process—Processing, Properties, and Applications

et al. 2021

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Plasma electrolytic oxidation (PEO) is a novel surface treatment process to produce thick, dense metal oxide coatings, especially on light metals, primarily to improve their wear and corrosion resistance. The coating manufactured from the PEO process is relatively superior to normal anodic oxidation. It is widely employed in the fields of mechanical, petrochemical, and biomedical industries, to name a few. Several investigations have been carried out to study the coating performance developed through the PEO process in the past. This review attempts to summarize and explain some of the fundamental aspects of the PEO process, mechanism of coating formation, the processing conditions that impact the process, the main characteristics of the process, the microstructures evolved in the coating, the mechanical and tribological properties of the coating, and the influence of environmental conditions on the coating process. Recently, the PEO process has also been employed to produce nanocomposite coatings by incorporating nanoparticles in the electrolyte. This review also narrates some of the recent developments in the field of nanocomposite coatings with examples and their applications. Additionally, some of the applications of the PEO coatings have been demonstrated. Moreover, the significance of the PEO process, its current trends, and its scope of future work are highlighted.

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“…[6][7][8] To surmount these shortcomings and improve the performance of the surface of these alloys, various coating methods (e.g., ion implantation, laser surfacing, di®usion treatment, thermal spraying, physical vapor deposition (PVD), chemical vapor deposition (CVD) and conversion coatings such as anodizing) are implemented. [9][10][11] Plasma electrolytic oxidation (PEO), also known as micro-arc oxidation (MAO) or micro-plasma oxidation (MPO), is a high-voltage anodizing process used for magnesium, [12][13][14][15][16] aluminum, [17][18][19][20][21] and titanium [22][23][24][25][26] alloys. The mechanism of PEO ceramic coating formation is controlled by complex chemical, electrochemical and plasma reactions.…”

Section: Why Peo Coatingmentioning

confidence: 99%

A Review on Adhesion Strength of Peo Coatings by Scratch Test Method

et al. 2018

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Adhesion strength is one of the important properties that reflects the quality of a plasma electrolytic oxidation (PEO) coating. Scratch testing can be considered as an appropriate technique to evaluate the adhesion strength of PEO coatings on magnesium, titanium, and aluminum substrates. The scratch test is usually performed either under a constant or a progressively increasing normal load, where the critical load is used as a measure of adhesion strength of the coatings. In this review paper, the effect of different factors such as duration of coating processing, electrolyte composition, and processing current density, as well as different additives to the electrolyte bath, was studied on the adhesion strength of PEO coatings formed on magnesium, titanium, and aluminum substrates. It is understood that an optimum increase in process time and input energy leads to a corresponding increase in thickness of the PEO dense oxide layer and, consequently, an increase in critical load and adhesion strength. Moreover, the electrolyte composition and additives were found to affect the coating microstructure and composition and, subsequently, the coating adhesion strength.

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Tribological properties of PEO nanocomposite coatings on titanium formed in electrolyte containing ketoconazole

Cited by 42 publications

References 45 publications

Characterization of Porous Phosphate Coatings Enriched with Calcium, Magnesium, Zinc and Copper Created on CP Titanium Grade 2 by Plasma Electrolytic Oxidation

Characterization of Porous Phosphate Coatings Enriched with Calcium, Magnesium, Zinc and Copper Created on CP Titanium Grade 2 by Plasma Electrolytic Oxidation

Plasma Electrolytic Oxidation (PEO) Process—Processing, Properties, and Applications

A Review on Adhesion Strength of Peo Coatings by Scratch Test Method

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