A hierarchically structured coating on 2A12-T4 aluminum alloy for anti-wear and corrosion

Huihui Xie; Lan Zhang; Xinyu Zhang; Yong Han

doi:10.1016/j.corsci.2022.110598

A hierarchically structured coating on 2A12-T4 aluminum alloy for anti-wear and corrosion

Huihui Xie
, Lan Zhang
, Xinyu Zhang
, Yong Han

School of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

2A12-T4 was micro-arc oxidized (MAOed) in silicate and phosphate mixed electrolytes and then sealed with polytetrafluoroethylene (PTFE) to improve the wear and corrosion resistance. The optimized MAOed coating was well adhered and consisted of gradient-nanostructured γ-Al₂O₃ and mullite. It decreased i_corr by 3 orders of magnitude lower than bare substrate. After sealing and/or hydrothermally aging treatment, the coating had obviously increased anti-wear and corrosion performance due to the decreased micropores/cracks and improved PTFE adhesion. This work provides an outstanding coating on 2A12-T4 for anti-wear and corrosion simultaneously and it should be self-enhanced in performance even if serves with hot steam.

Original language	English
Article number	110598
Journal	Corrosion Science
Volume	207
DOIs	https://doi.org/10.1016/j.corsci.2022.110598
State	Published - Oct 2022

Keywords

Aging
Al alloy
Corrosion
Micro-arc oxidation
Sealing
Wear

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10.1016/j.corsci.2022.110598

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title = "A hierarchically structured coating on 2A12-T4 aluminum alloy for anti-wear and corrosion",

abstract = "2A12-T4 was micro-arc oxidized (MAOed) in silicate and phosphate mixed electrolytes and then sealed with polytetrafluoroethylene (PTFE) to improve the wear and corrosion resistance. The optimized MAOed coating was well adhered and consisted of gradient-nanostructured γ-Al2O3 and mullite. It decreased icorr by 3 orders of magnitude lower than bare substrate. After sealing and/or hydrothermally aging treatment, the coating had obviously increased anti-wear and corrosion performance due to the decreased micropores/cracks and improved PTFE adhesion. This work provides an outstanding coating on 2A12-T4 for anti-wear and corrosion simultaneously and it should be self-enhanced in performance even if serves with hot steam.",

keywords = "Aging, Al alloy, Corrosion, Micro-arc oxidation, Sealing, Wear",

author = "Huihui Xie and Lan Zhang and Xinyu Zhang and Yong Han",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

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doi = "10.1016/j.corsci.2022.110598",

language = "英语",

volume = "207",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - A hierarchically structured coating on 2A12-T4 aluminum alloy for anti-wear and corrosion

AU - Xie, Huihui

AU - Zhang, Lan

AU - Zhang, Xinyu

AU - Han, Yong

PY - 2022/10

Y1 - 2022/10

N2 - 2A12-T4 was micro-arc oxidized (MAOed) in silicate and phosphate mixed electrolytes and then sealed with polytetrafluoroethylene (PTFE) to improve the wear and corrosion resistance. The optimized MAOed coating was well adhered and consisted of gradient-nanostructured γ-Al2O3 and mullite. It decreased icorr by 3 orders of magnitude lower than bare substrate. After sealing and/or hydrothermally aging treatment, the coating had obviously increased anti-wear and corrosion performance due to the decreased micropores/cracks and improved PTFE adhesion. This work provides an outstanding coating on 2A12-T4 for anti-wear and corrosion simultaneously and it should be self-enhanced in performance even if serves with hot steam.

AB - 2A12-T4 was micro-arc oxidized (MAOed) in silicate and phosphate mixed electrolytes and then sealed with polytetrafluoroethylene (PTFE) to improve the wear and corrosion resistance. The optimized MAOed coating was well adhered and consisted of gradient-nanostructured γ-Al2O3 and mullite. It decreased icorr by 3 orders of magnitude lower than bare substrate. After sealing and/or hydrothermally aging treatment, the coating had obviously increased anti-wear and corrosion performance due to the decreased micropores/cracks and improved PTFE adhesion. This work provides an outstanding coating on 2A12-T4 for anti-wear and corrosion simultaneously and it should be self-enhanced in performance even if serves with hot steam.

KW - Aging

KW - Al alloy

KW - Corrosion

KW - Micro-arc oxidation

KW - Sealing

KW - Wear

UR - https://www.scopus.com/pages/publications/85136231571

U2 - 10.1016/j.corsci.2022.110598

DO - 10.1016/j.corsci.2022.110598

M3 - 文章

AN - SCOPUS:85136231571

SN - 0010-938X

VL - 207

JO - Corrosion Science

JF - Corrosion Science

M1 - 110598

ER -

A hierarchically structured coating on 2A12-T4 aluminum alloy for anti-wear and corrosion

Abstract

Keywords

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