Effect of Micro-Arc Oxidation on Friction–Wear Behavior of Cold-Sprayed Al Coating in 3.5 wt.% NaCl Solution

Zhang, Jing; Dejun, Kong

doi:10.1007/s11665-019-04076-1

Cited by 12 publications

(3 citation statements)

References 21 publications

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“…These defects appear to be severely cracked, indicating fatigue wear. [ 63 ] Furthermore, a magnified groove highlights micro‐cutting at its ridge (Figure 10e). [ 64 ] Notably, the removed part of material (area 2) contains a high level of oxygen of ≈8 wt%, according to EDS analysis (Figure 11).…”

Section: Resultsmentioning

confidence: 99%

Effect of Heat‐Treatment and NiB–TiO₂ Composite Coating on the Tribological Performance of AISI P20 Steel

Kallel,

Yangui,

Bahri

et al. 2024

steel research int.

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Americain iron and steel institute (AISI) P20 steel, commonly used in plastic mold production, frequently faces significant wear challenges during service. Industries continually seek efficient and cost‐effective solutions to mitigate these issues. Herein, heat‐treatment and sol‐enhanced NiB–TiO2 coating are applied separately or in combination to exclusively assess the wear resistance improvement of as‐received P20 steel. To this end, wear tests are conducted under different loads using a pin‐on‐disk test, and the worn surfaces are evaluated through a laser scanning microscope, scanning electron microscopy (SEM), and energy‐dispersive spectroscopy (EDS). In the findings, it is revealed that the heat treatment significantly enhances the wear resistance of AISI P20 steel, reducing the wear rate by almost half due to microstructure modification and surface hardening. In addition, NiB–TiO2 coating provides further enhancement of wear endurance. It seems to be sufficient to provide excellent wear resistance to steel since the wear rate decreases by approximately 61% and 65% when the coating is applied to the as‐received and heat‐treated P20, respectively. Based on SEM–EDS analysis, the wear mechanism of steel is similar for both steel conditions, involving abrasive wear and delamination. However, the NiB–TiO2 coating intensively modifies the wear mechanism of the steel, leading to a combination of abrasive, adhesive, and fatigue wear.

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Section: Resultsmentioning

confidence: 99%

Effect of Heat‐Treatment and NiB–TiO₂ Composite Coating on the Tribological Performance of AISI P20 Steel

Kallel,

Yangui,

Bahri

et al. 2024

steel research int.

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“…For example, Kang et al [37] used the composite technology of magnetron sputtering and MAO to first deposit an aluminum layer on the surface of Ti6Al4V alloy and then to oxidize the deposited aluminum layer using in-situ MAO to form an alumina-based ceramic coating to improve wear resistance of the titanium alloy. Zhang et al [38] first used cold spray technology to prepare an aluminum layer on a steel substrate and then used MAO technology to oxidize the sprayed aluminum layer to produce an alumina-based ceramic coating and tested the friction and wear performance in 3.5 wt.% NaCl solution. The wear resistance of the steel materials with composite coating was significantly improved.…”

Section: Discussionmentioning

confidence: 99%

Micrographic Properties of Composite Coatings Prepared on TA2 Substrate by Hot-Dipping in Al–Si Alloy and Using Micro-Arc Oxidation Technologies (MAO)

Wang

Zhou

et al. 2020

Coatings

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A composite coating composed of intermetallic compounds, Al–Si alloys, and an oxide ceramic layer was prepared on TA2 substrate by hot-dipping Al–Si alloy and micro-arc oxidation (MAO) methods. The microstructure and composition distribution of the resulting hot-dipped Al–Si alloy layer and MAO-caused ceramic layer were studied by scanning electron microscope (SEM) and energy dispersive spectrum (EDS). In addition, the phase composition of the diffusion layer obtained by the Al–Si alloy hot-dipping procedure was investigated by electron backscattered diffraction (EBSD), and the phase structure of the MAO-treated layer was studied by X-ray diffraction (XRD) analysis and X-ray photoelectron spectroscopy (XPS). The MAO method can make the hot-dipped Al–Si alloy layer in-situ oxidized to form a ceramic layer. Finally, a three-layer composite coating composed of a diffusion layer formed by the Ti–Al–Si interdiffusion, an Al–Si alloy layer and a ceramic layer was prepared on TA2 substrate. Compared with TA2 substrate, the TA2 sample with a three-layer composite coating has larger friction coefficient and less abrasion loss. The three-layer composite coating can significantly improve the wear resistance of TA2. A technical composite method was developed to the low cost in-situ growth of alumina-based ceramic wear-resistant coatings on TA2 substrate.

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“…It is possible to change the phase composition and control polymorphic transformations based on aluminum oxide not only due to changes in electrolysis conditions, but also by optimizing the composition used to obtain coatings [43,44]. The presence of direct contact between the metal and the breakdown region allows expecting a large effect of the chemical composition of the aluminum alloy on the properties of coatings [45]. Preliminary studies have shown that the phase composition of coatings on different grades of aluminum alloys is different, which is apparently due to the partial completion of the transformation of the low-temperature modification of γ-A1 2 O 3 alumina into the stable modification a-A1 2 O 3 [31,35].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determination of influence of electrolyte composition and impurities on the content of -AL2O3 phase in MАO-coatings on aluminum

Subbotinа¹,

Al-Qawabeha²,

Belozerov³

et al. 2019

EEJET

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Методом мікродугового оксидування технічно чистого алюмінію і алюмінію легованого міддю і цинком в лужно-силикатном електроліті при щільності струму ~20 А/дм 2 одержані покриття товщиною близько 100 мкм. Наведено результати дослідження морфології поверхні, фазового складу і твердості МДО-покриттів. Параметрами зміни служили склад електроліту і концентрація легуючих (Cu і Zn) елементів. Це дослідження проведено тому, що наявних в даний час даних не достатньо для уявлення про характер впливу хімічного складу алюмінієвого сплаву і умов електролізу (зокрема, складу електроліту) на механізм і кінетику перетворення γ→a. А без розуміння цього спрямована зміна структурного стану і властивостей МДО покриттів стає неможливою. В результаті досліджень було встановлено, що при мікродуговом оксидуванні алюмінієвих сплавів в лужному електроліті з додаванням рідкого скла (Na 2 SiO 3) різної концентрації зміцнений шар складається з оксидів a-А1 2 О 3 , γ-А1 2 О 3 і муллита 3Al 2 O 3 • 2SiO 2. Дані рентгеноструктурного аналізу покриттів свідчать про кристалічну будову покриттів. Встановлено, що легування алюмінію міддю і цинком істотно впливає на фазовий склад покриття, змінюючи кількісне співвідношення фаз нелінійним чином. Найбільший вміст a-А1 2 О 3 фази (до 60 об. %) досягається при легуванні Cu. При цьому найбільш висока твердість МДО покриттів досягається при використанні електроліту складу 1 г/л KOH і 6 г/л Na 2 SiO 3 в алюмінієвих сплавах при вмісті міді більше 3 %, а цинку-2-3 %. Встановлено, що механізм формування фазового складу слід пов'язати зі стабілізацією і дестабілізацією фази γ-А1 2 О 3. З цього для досягнення високої твердості слід вибирати ті легуючі елементи, які впливають на дестабілізацію γ-А1 2 О 3 , що забезпечує утворення фази a-А1 2 О 3 (корунд). У зв'язку з цим виявлено, що катіони Cu 2+ сприяють дестабілізації фази γ-А1 2 О 3 , а катіони Zn 2+ призводять до стабілізації фази γ-А1 2 О 3 при утриманні Zn>3 % Ключові слова: мікродугове оксидування, анодно-катодний режим, склад електроліту, легування, фазовий склад, корунд

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Effect of Micro-Arc Oxidation on Friction–Wear Behavior of Cold-Sprayed Al Coating in 3.5 wt.% NaCl Solution

Cited by 12 publications

References 21 publications

Effect of Heat‐Treatment and NiB–TiO₂ Composite Coating on the Tribological Performance of AISI P20 Steel

Effect of Heat‐Treatment and NiB–TiO₂ Composite Coating on the Tribological Performance of AISI P20 Steel

Micrographic Properties of Composite Coatings Prepared on TA2 Substrate by Hot-Dipping in Al–Si Alloy and Using Micro-Arc Oxidation Technologies (MAO)

Determination of influence of electrolyte composition and impurities on the content of -AL2O3 phase in MАO-coatings on aluminum

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Effect of Micro-Arc Oxidation on Friction–Wear Behavior of Cold-Sprayed Al Coating in 3.5 wt.% NaCl Solution

Cited by 12 publications

References 21 publications

Effect of Heat‐Treatment and NiB–TiO2 Composite Coating on the Tribological Performance of AISI P20 Steel

Effect of Heat‐Treatment and NiB–TiO2 Composite Coating on the Tribological Performance of AISI P20 Steel

Micrographic Properties of Composite Coatings Prepared on TA2 Substrate by Hot-Dipping in Al–Si Alloy and Using Micro-Arc Oxidation Technologies (MAO)

Determination of influence of electrolyte composition and impurities on the content of -AL2O3 phase in MАO-coatings on aluminum

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Effect of Heat‐Treatment and NiB–TiO₂ Composite Coating on the Tribological Performance of AISI P20 Steel

Effect of Heat‐Treatment and NiB–TiO₂ Composite Coating on the Tribological Performance of AISI P20 Steel