Effect of phosphating time on protection properties of hurealite coating: Differences between ground and shot peened HSLA steel surface

Hadzima, Branislav; Pastorek, Filip; Borko, Kamil; Fintová, Stanislava; Kajánek, Daniel; Bagherifard, Sara; Gholami-Kermanshahi, Mozhgan; Trško, Libor; Pastorková, Jana; Brezina, Jakub

doi:10.1016/j.surfcoat.2019.07.056

Cited by 17 publications

(11 citation statements)

References 40 publications

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“…The total Mn and Fe content in the well prepared MnP structure is 39-40 wt% [7,[13][14]. However, as proved in our previous study, higher Mn content helps to reach better corrosion properties of the layer [15]. Therefore, it is important to know the chemical composition of the MnP layers for the deeper evaluation of the surface properties.…”

Section: Resultsmentioning

confidence: 87%

Effect of Phosphating Temperature on Surface Properties of Manganese Phosphate Coating on HSLA Steel

Pastorková¹,

Jacková²,

Pastorek³

et al. 2020

Komunikácie

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A phosphating process modified for a high-strength low-alloy (HSLA) steel was performed at various temperatures and influence on the surface properties of the Domex steel covered by manganese phosphate (MnP) was investigated by electrochemical corrosion tests supported by a photo documentation performed by the SEM. Corrosion measurements were performed in 0.1M NaCl solution at 22±2 °C using electrochemical impedance spectroscopy and potentio-dynamic polarisation in order to obtain thermodynamic and kinetic corrosion characteristics and individual elements of equivalent circuits. It is that a temperature of the phosphating process has a very significant effect on protection properties of the created manganese phosphate coating on the Domex steel and needs to be strictly monitored. According to results of corrosion testing and surface morphology observations, the optimal temperature for the phosphating process on the tested Domex steel was chosen.

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Section: Resultsmentioning

confidence: 87%

Effect of Phosphating Temperature on Surface Properties of Manganese Phosphate Coating on HSLA Steel

Pastorková¹,

Jacková²,

Pastorek³

et al. 2020

Komunikácie

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“…The results from the potentiodynamic polarization measurements of the AZ31 samples, covered by the through the electrode surface [25][26][27]. In practical, the measured impedance spectra may differ from ideal or theoretical behaviour.…”

Section: Resultsmentioning

confidence: 99%

Corrosion Behaviour of Preserved PEO Coating on AZ31 Magnesium Alloy

Pastorek¹,

Štrbák²,

Kajánek³

et al. 2021

Communications

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A surface treatment process, composed of plasma electrolytic oxidation (PEO) and sealing by temporary oil preservation system containing corrosion inhibitors, was performed on AZ31 magnesium alloy in order to improve its corrosion resistance in environments containing chlorides. Both atmospheric and immersion conditions were evaluated by electrochemical tests in 0.1M NaCl solution together with salt spray test according to STN EN ISO 9227 standard. The obtained results confirmed significant improvement of corrosion resistance reached by the PEO sealing in aggressive environments compared to the pure PEO coating on AZ31 surface. Hence, such a duplex coating is a very perspective alternative for magnesium alloy applications in severe conditions or for temporary protection of magnesium products coated by the PEO during marine transport.

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“…In this method, sand is replaced by a large number of hard steel (or ceramic) balls in the size of 0.25-1 mm, which are used to hit the surfaces of materials in the velocities of 20-150 m s À1 over a short time in a controlled atmosphere. [190][191][192] This method introduces severe plastic deformation into the surfaces of the processed materials. Therefore, surface-modified layers with refined grains are obtained.…”

Section: Mechanical Methodsmentioning

confidence: 99%

“…Shot peening (SP) can be regarded as an evolutionary technology from sandblasting. In this method, sand is replaced by a large number of hard steel (or ceramic) balls in the size of 0.25–1 mm, which are used to hit the surfaces of materials in the velocities of 20–150 m s −1 over a short time in a controlled atmosphere . This method introduces severe plastic deformation into the surfaces of the processed materials.…”

Section: Conventional Technologies For Surface Modificationmentioning

confidence: 99%

Surface Modification of Titanium and Titanium Alloys: Technologies, Developments, and Future Interests

2020

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Thanks to a considerable number of fascinating properties, titanium (Ti) and Ti alloys play important roles in a variety of industrial sectors. However, Ti and Ti alloys could not satisfy all industrial requirements; the degradation of Ti and Ti alloys always commences on their surfaces in service, which declines the performances of Ti workpieces. Therefore, with aim to further improve their mechanical, corrosion and biological properties, surface modification is often required for Ti and Ti alloys. This article reviews the technologies and recent developments of surface-modification methods with respect to Ti and Ti alloys, including mechanical, physical, chemical, and biochemical technologies. Conventional methods have limited improvement in the properties and/or restriction on the geometry of workpieces. Therefore, many advanced surfacemodification technologies have emerged in recent decades. New methods make Ti and Ti alloys have better performance and extended applications. With requirement of high surface properties in future. Understanding the mechanism in various surface-modification methods, combining the advantages of current technologies and developing new coating materials with high performance are required urgently. As such, incorporation of different surface-modification technologies with high-performance modified layers may be the mainstream of surface modifications for Ti and Ti alloys. . His current research interests focus on the metal additive manufacturing (e.g., selective laser melting, electron beam melting), titanium alloys and composites, and processing-microstructureproperties in high-performance materials.

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Effect of phosphating time on protection properties of hurealite coating: Differences between ground and shot peened HSLA steel surface

Cited by 17 publications

References 40 publications

Effect of Phosphating Temperature on Surface Properties of Manganese Phosphate Coating on HSLA Steel

Effect of Phosphating Temperature on Surface Properties of Manganese Phosphate Coating on HSLA Steel

Corrosion Behaviour of Preserved PEO Coating on AZ31 Magnesium Alloy

Surface Modification of Titanium and Titanium Alloys: Technologies, Developments, and Future Interests

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