Obtaining hydroxyapatite coatings by mechanochemical interaction

Mamaeva, A.; Kenzhegulov, Aidar; Panichkin, A.V.; Shah, A.

doi:10.31643/2020/6445.29

Cited by 4 publications

(4 citation statements)

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“…As can be seen from the friction results without lubrication, the TiAlCN-2 coating has the lowest and most stable CoF compared to the other coatings, indicating that this coating has low friction resistance [ [29][30][31][32]]. In addition, low CoF can be associated with the formation of debris in the wear track, which leads to the subsequent formation of a lubricating transition layer, mainly due to an increase in carbon sp 2 [33].…”

Section: Research Discussionmentioning

confidence: 99%

Microstructure and tribological study of TiAlCN and TiTaCN coatings

Bakhytuly¹,

Kenzhegulov²,

Nurtanto³

et al. 2023

KIMS/CUMR/MShKP

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The low coefficients of friction and wear rates of transition metal carbonitride make them excellent candidates for friction and wear applications. Coatings based on titanium carbonitride alloyed with Ta and Al were deposited using reactive magnetron sputtering on the surface of titanium VT1-0 and steel AISI 304. The effect of alloying titanium carbonitrides with Ta and Al and acetylene flow during deposition on the structure, composition, and tribological properties of the coating was studied. TiAlCN and TiTаCN coatings were deposited in various acetylene flows along with stable argon and nitrogen flows. Scanning electron microscopy, optical microscopy, X-ray phase analysis, and sliding wear test (ball-on-disk method) in two media were used to study the resulting coatings. The average coefficient of friction of the coating under friction without lubrication varied in the range of 0.13-0.85 and under friction with lubrication in the range of 0.0015-0.081. From the point of view of wear rate, it is shown that the most wear-resistant coating under friction conditions with and without lubrication is TiAlCN-2. The resulting coatings can be useful as protection for machine parts or tools that are subject to friction and wear.

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Section: Research Discussionmentioning

confidence: 99%

Microstructure and tribological study of TiAlCN and TiTaCN coatings

Bakhytuly¹,

Kenzhegulov²,

Nurtanto³

et al. 2023

KIMS/CUMR/MShKP

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“…All six powder mixtures were completely transformed into HA with crystallite sizes ranging from 18.5 to 20.2 nm after 1 h and from 22.5 to 23.9 nm after 2 h of grinding. In [21], hydroxyapatite coatings on titanium were obtained after mechanochemical interaction by the gas-dynamic spraying method. The results of cross-sections of coatings showed that the formation of HA particles predominantly occurred in the depressions of the titanium substrate.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Grinding of Hydroxyapatite and Its Interaction with Titanium

Mamaeva,

Kenzhegulov,

Panichkin

et al. 2024

Coatings

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The development of promising biocompatible composites based on hydroxyapatite with a metallic component is of great interest to researchers. This article describes the synthesis of hydroxyapatite powder by the hydrolytic method and presents the results of mechanical grinding of hydroxyapatite powder. Additionally, in order to study the interaction between titanium and hydroxyapatite powders, the results of their thermal treatment in the temperature range of 600–900 °C are presented. As a result of the hydrolytic method, a powder consisting of Ca5(PO4)3(OH) and CaO phases with a fraction of 400–600 μm was obtained. According to the results of mechanical grinding, it was determined that with an increase in grinding time from 30 to 120 min, the intensive main diffraction lines corresponding to hydroxyapatite decrease. During the thermal treatment of titanium and hydroxyapatite powders, titanium oxidizes forming suboxides and titanium dioxide (TiO2). At higher temperatures, the hydroxyapatite phase disappears from the mixture, and titanium oxide, calcium phosphate compound, and small amounts of calcium titanate and titanium hydrophosphate are present.

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“…Various methods are used to apply CaP coatings, including typical methods such as the sol-gel method [12], plasma spraying [13], electrophoretic deposition [14], micro-arc oxidation (MAO) [15], chemical vapor deposition [16], pulsed laser deposition [17], ion beam deposition [18], magnetron sputtering [19], and sandblasting [20,21], among others. Some researchers [22,23] have proposed a combination of methods for the deposition of CaP coatings.…”

Section: Introductionmentioning

confidence: 99%

Influence of Current Duty Cycle and Voltage of Micro-Arc Oxidation on the Microstructure and Composition of Calcium Phosphate Coating

Mamaeva,

Kenzhegulov,

Panichkin

et al. 2024

Coatings

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The micro-arc oxidation (MAO) technique was employed to produce calcium phosphate coatings on titanium surfaces using an electrolyte composed of hydroxyapatite and calcium carbonate in an aqueous solution of orthophosphoric acid. The coatings’ morphology and composition were regulated by adjusting electrical parameters, specifically the duty cycle and voltage. This study examined the effects of the duty cycle and voltage during the MAO process on the microstructure and composition of calcium phosphate coatings on VT1–0 titanium substrates. Scanning electron microscopy (SEM) was utilized to analyze the microstructure and thickness of the coatings, while X-ray diffraction (XRD) was employed to determine their phase composition. The findings reveal that the surface morphology of the calcium phosphate coatings transitions from a porous, sponge-like structure to flower-like formations as the duty cycle and voltage increase. A linear increase in the voltage within the applied duty cycles led to a rise in the size of the forming particles of amorphous/crystalline structures containing phases of monetite (CaPO3(OH)), monocalcium phosphate monohydrate (Ca(H2PO4)2·H2O), and calcium pyrophosphate (γ–Ca2P2O7).

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Obtaining hydroxyapatite coatings by mechanochemical interaction

Cited by 4 publications

References 0 publications

Microstructure and tribological study of TiAlCN and TiTaCN coatings

Microstructure and tribological study of TiAlCN and TiTaCN coatings

Mechanical Grinding of Hydroxyapatite and Its Interaction with Titanium

Influence of Current Duty Cycle and Voltage of Micro-Arc Oxidation on the Microstructure and Composition of Calcium Phosphate Coating

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