Improvement of oxide layers formed by plasma electrolytic oxidation on cast Al Si alloy by incorporating TiC nanoparticles

Polunin, A. V.; Черетаева, А. О.; Borgardt, E. D.; Растегаев, И. А.; Krishtal, M. M.; Katsman, A.; Yasnikov, I. S.

doi:10.1016/j.surfcoat.2021.127603

Cited by 29 publications

(24 citation statements)

References 85 publications

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“…In recent years, a promising trend in the field of metal surface modification has been the creation of micro-arc coatings with micro-and nano-particles [58]. This provides an opportunity to create coatings with a wide range of improved functional and operational properties [59].…”

Section: Discussionmentioning

confidence: 99%

Porous Biocoatings Based on Diatomite with Incorporated ZrO2 Particles for Biodegradable Magnesium Implants

Sedelnikova

Kashin

Уваркин

et al. 2023

JFB

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In the present work, the surface of a biodegradable Mg alloy was modified to create porous diatomite biocoatings using the method of micro-arc oxidation. The coatings were applied at process voltages in the range of 350–500 V. We have studied the influence of the addition of ZrO2 microparticles on the structure and properties of diatomite-based protective coatings for Mg implants. The structure and properties of the resulting coatings were examined using a number of research methods. It was found that the coatings have a porous structure and contain ZrO2 particles. The coatings were mostly characterized by pores less than 1 μm in size. However, as the voltage of the MAO process increases, the number of larger pores (5–10 μm in size) also increases. However, the porosity of the coatings varied insignificantly and amounted to 5 ± 1%. It has been revealed that the incorporation of ZrO2 particles substantially affects the properties of diatomite-based coatings. The adhesive strength of the coatings has increased by approximately 30%, and the corrosion resistance has increased by two orders of magnitude compared to the coatings without zirconia particles.

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Section: Discussionmentioning

confidence: 99%

Porous Biocoatings Based on Diatomite with Incorporated ZrO2 Particles for Biodegradable Magnesium Implants

Sedelnikova

Kashin

Уваркин

et al. 2023

JFB

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“…In the present work, the coatings formed in electrolytes containing micro-particles of TCP and wollastonite, which had negative zeta-potential (ζ) equal to −47 mV and −43 mV, respectively. According to [47,48,56,57] this property contributed to the intensification of the process of incorporation of TCP and wollastonite particles in the coatings.…”

Section: Discussionmentioning

confidence: 99%

“…The production of micro-arc coatings with micro-and nanoparticles was a modern trend in surface engineering [47]. The introduction of particles into the composition of coatings along with other components and phases could significantly expand the range of properties and possibilities for modifying the surface of materials and improving their functional and operational characteristics [56].…”

Section: T3 Cells Research With the Help Of The Flow Cytometrymentioning

confidence: 99%

The Role of Microparticles of β-TCP and Wollastonite in the Creation of Biocoatings on Mg0.8Ca Alloy

Sedelnikova

Бакина

Ugodchikova

et al. 2022

Metals

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The introduction of particles into the composition of coatings can significantly expand the range of properties and possibilities of the modified materials. In this work, the coatings containing microparticles of β-tricalcium phosphate (β-TCP) and wollastonite separately and in combination with each other were created on the surface of an Mg0.8Ca alloy. The morphology and microstructure of the coatings were examined by scanning and transmission electron microscopy. Their phase composition was determined with the help of X-ray diffraction analysis. The coating-to-substrate adhesion evaluation was carried out via the scratch-test method. Potentiodynamic polarization curves of the coatings were obtained during their immersion in 0.9% NaCl solution and their electrochemical properties were determined. Cytotoxic properties of the coatings were investigated by means of the MTT assay and flow cytometry in the course of the biological studies. In addition, NIH/3T3 cell morphology was analyzed using scanning electron microscopy. The structure, morphology, physical and mechanical, corrosive, and biological properties of the coatings depended on the type of particles they contained. Whereas the coating with β-TCP microparticles had higher adhesive properties, the coatings with wollastonite microparticles, as well as the combined coating, were less soluble and more biocompatible. In addition, the wollastonite-containing coating had the highest corrosion resistance.

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“…secondary cast alloy. The obtained layers were thick and dense and the corrosion resistance was reported to be improved by approximately ten times due to the use of the electrolyte solution based on KOH, Na 4 P 2 O 7 ·10H 2 O and Na 2 SiO 3 ·9H 2 O with the addition of 0.5 g/L TiC nanoparticles [24]. Another direction, especially beneficial for TES-related applications, was to manufacture a highly thermally conductive coating by means of PEO on an aluminium substrate [25].…”

Section: Introductionmentioning

confidence: 99%

Anticorrosive PEO coatings on metallic cast heat enhancers for thermal energy storage

Raźny,

Dmitruk,

Naplocha

2023

Surface Engineering

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The research aims to determine whether a protective oxide coating obtained by plasma electrolytic oxidation (PEO) will prevent unfavourable changes occurring on the surface of aluminium heat enhancers for thermal energy storage (TES) based on phase change materials (PCMs). For domestic purposes (short-term, solar energy), salt hydrates are widely utilised as PCMs. Their low thermal conductivity makes the application of metal enhancers necessary to improve heat transfer in the unit. Due to the chemically aggressive nature of MgCl 2 ·H 2 O, aluminium enhancers can be negatively affected during working cycles. PEO was proposed to overcome corrosion issues in the units. Cast samples, coated with PEO for a short time in KOH-Na 2 SiO 3 electrolyte, were subjected to a molten MgCl 2 ·H 2 O environment. Mass change and the surface were studied via SEM, EDS, and XRD measurements. A thin layer of aluminium oxide prevented castings from changes occurring on the surface of the enhancer.

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Improvement of oxide layers formed by plasma electrolytic oxidation on cast Al Si alloy by incorporating TiC nanoparticles

Cited by 29 publications

References 85 publications

Porous Biocoatings Based on Diatomite with Incorporated ZrO2 Particles for Biodegradable Magnesium Implants

Porous Biocoatings Based on Diatomite with Incorporated ZrO2 Particles for Biodegradable Magnesium Implants

The Role of Microparticles of β-TCP and Wollastonite in the Creation of Biocoatings on Mg0.8Ca Alloy

Anticorrosive PEO coatings on metallic cast heat enhancers for thermal energy storage

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