Evaluation of the Mechanical Properties of Combined Metal-Oxide-Ceramic Layers on Aluminum Alloys

Студент, М. М.; Shmyrko, V. V.; Klapkiv, М. D.; Lyasota, Igor; Dobrovol’s’ka, L. N.

doi:10.1007/s11003-014-9720-9

Cited by 17 publications

(5 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…a b It was found that tribo structuresoxide films with the general formula FeAl2O4 (Fig. 2) were synthesized on the surfaces of cast-iron counter body after tests with PEO layers [6][7][8]. On the surface of the iron cast counter body in a friction couple with a PEO layer on AMg-6, the thickness of the oxide layer is significantly larger and is 3-5 microns.…”

Section: Tribological Studiesmentioning

confidence: 99%

“…A part of this energy, produced in the contact area, goes to its accumulation in the system, as a result of which oxide films of the type FeAl2O4, are synthesized on the surfaces of the steel counter body, and the other on the radiation of heat into the environment. The thermal energy formed in the process of frictional interaction of metal contact couples is directed primarily to their destruction, and in the frictional interaction of the contact couples of ceramicsthe metal goes on to synthesize tribo structures on the metal surface of the oxide type [6,8]. After frictional interaction with the PEO layer synthesized on D16 alloy, glycerate films but nonoxide films form on the surface of cast iron samples, which contributes to the selective transfer [8].…”

Section: Tribological Studiesmentioning

confidence: 99%

See 1 more Smart Citation

Tribological behavior of plasma electrolytic oxidation layers synthesized on AMg6 and D16 alloys in couples with cast iron SCh 21–40

Студент¹,

Padgurskas²,

Dovhunyk³

et al. 2019

BALTTRIB

View full text Add to dashboard Cite

the tribological behavior of plasma electrolytic oxidation (PEO) layers synthesized on AMg-6 and D16T alloys (as the analogists of the A95556 UNWS USA and AA2024 ANSI USA) and on PEO layers formed on arc sprayed coatings (ASC) from both solid and cored wires (CW) in electrolyte-3 g /l KOH + 2 g / l Na2SiO3) by pulse current had been investigated. It has been established that the wear resistanse of the upper and lower PEO layers, synthesized both on the D16T alloy and on the ASC from the solid wire D16 is high. The highest wear resistance during friction with the fixed abrasive have PEO layers synthesized on the D16T alloy and on the ASC from D16 solid wire.The efficiency of the combination of arc spraying (AS) and PEO technologies for the reduction and hardening of surfaces of contact pairs (couples) from light alloys, operating both under conditions of abrasive wear and boundary lubrication is shown.

show abstract

Section: Tribological Studiesmentioning

confidence: 99%

Section: Tribological Studiesmentioning

confidence: 99%

Tribological behavior of plasma electrolytic oxidation layers synthesized on AMg6 and D16 alloys in couples with cast iron SCh 21–40

Студент¹,

Padgurskas²,

Dovhunyk³

et al. 2019

BALTTRIB

View full text Add to dashboard Cite

show abstract

“…PEO is used to form oxide layers on compact aluminum alloys [15][16][17], to oxidize aluminum coatings deposited in various ways on a steel base [18][19][20][21][22], or on other substrates [23,24]. PEO of aluminum alloys makes it possible to obtain surface layers with high hardness (up to 2000 HV), low friction coefficient, high adhesion to the metal base, and low environmental hazard [25][26][27][28]. However, the disadvantages of this method include high energy consumption for its implementation, which makes it impossible to synthesize PEO layers on large-sized elements.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Heat Treatment on the Structural-Phase State and Abrasive Wear Resistance of a Hard-Anodized Layer on Aluminum Alloy 1011

et al. 2023

View full text Add to dashboard Cite

The aim of this study was to evaluate the effect of heat treatment on the phase composition, hardness, and abrasion wear resistance of hard-anodized layers (HAL) on 1011 aluminum alloy. X-ray diffraction analysis revealed the Al2O3·3H2O phase in the structure of HAL synthesized for 1 h. While in the heat-treated HAL, aluminum oxide phases of the α-Al2O3(amorphous) and γ-Al2O3(amorphous) types were found. Treatment at 400 °C for 1 h increased the HAL microhardness from 400 to 650 HV, and its abrasive wear resistance with fixed abrasive by up to 2.6 times. The ranking of various ways of hardening aluminum alloys relative to the D16 alloy showed that the abrasive wear resistance of heat-treated HAL is 20 times higher. Plasma electrolyte oxidation increased the abrasive wear resistance of the D16 alloy by 70–90 times, and its coating with high-speed oxygen fuel by 75–85 times. However, both methods are complex, energy-consuming, and require fine grinding of parts. Despite the lower wear resistance of HAL, their synthesis is cheaper and does not require the fine-tuning of parts. Moreover, despite the low hardness of HAL at present, hard anodizing is already commercially used to harden engine pistons, clamshell rotators, and pulleys.

show abstract

“…To restore and extend the service life of various shaft-type elements, methods of thermal spraying of coatings have recently become widely used in world practice [1][2][3][4][5]. Arc spraying is one of the cheapest and simplest methods of thermal spraying, which does not require expensive equipment [6,7]. The use of cored wires (CW) for arc spraying (AS) made it possible to use such coatings for protection from gas corrosion [8][9][10][11][12][13][14], against gas-abrasive wear of heating elements of boilers of thermal power plants [15][16][17] and for the restoration of various wear parts, in particular, shafts of transport and agricultural machines, food industry compressors operating under boundary friction [18], and corrosionabrasive wear [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Arc Coatings Sprayed with Cored Wires with Different Charge Compositions

et al. 2022

View full text Add to dashboard Cite

The mechanical properties (hardness, cohesion, and residual stresses) of arc coatings designed for operation under conditions of boundary friction and corrosive-abrasive wear are analyzed. The coatings were formed by arc spraying cored wires (CW) with different charge compositions (the content of carbon, aluminum, and boron in CW charge varied). It is shown that the hardness of the coatings increases with an increase in the carbon content in them up to 1 wt. %, and then decreased due to an increase in the content of residual austenite in their structure. The level of residual stresses of the first kind in such coatings increased by four times with an increase in the carbon content to 2 wt. %. The hardness of the coatings and the level of residual tensile stresses in them also increase with a decrease in the aluminum content in them. In this case, the cohesive strength of the coatings increased due to the implementation of aluminothermic reactions in the droplets of the CW melt during their flight and crystallization on the sprayed surfaces. However, then, with an increase in the aluminum content in the coatings of more than 2 wt. %, their cohesive strength decreased. The level of residual tensile stresses in coatings with a high content of retained austenite decreased after heat treatment (tempering) of the specimens. Sometimes, after tempering, these stresses even transformed into residual compressive stresses (in particular, under using CW C1.4Cr14Ni2). At the same time, the tempering of specimens with a predominance of ferrite in the coating structure increased the level of residual tensile stresses in them, which is due to the precipitation of finely dispersed carbides or borides. It has been shown that the addition of boron-containing components (ferrochromium-boron, chromium-boron) to the composition of the CW charge leads to a significant increase in the hardness of the coatings. Thus, an increase in the boron content in coatings from 0 to 4 wt. % leads to an increase in their hardness from 320 HV to 1060 HV. However, this is accompanied by an increase in tensile residual stresses in the coatings and a decrease in their cohesive strength.

show abstract

Evaluation of the Mechanical Properties of Combined Metal-Oxide-Ceramic Layers on Aluminum Alloys

Cited by 17 publications

References 3 publications

Tribological behavior of plasma electrolytic oxidation layers synthesized on AMg6 and D16 alloys in couples with cast iron SCh 21–40

Tribological behavior of plasma electrolytic oxidation layers synthesized on AMg6 and D16 alloys in couples with cast iron SCh 21–40

The Effect of Heat Treatment on the Structural-Phase State and Abrasive Wear Resistance of a Hard-Anodized Layer on Aluminum Alloy 1011

Mechanical Properties of Arc Coatings Sprayed with Cored Wires with Different Charge Compositions

Contact Info

Product

Resources

About