Effective corrosion protection of aluminum alloy AA2024-T3 with novel thin nanostructured oxide coating

被引：33

作者：

Merisalu, Maido ^{[1
]}

Aarik, Lauri ^{[1
]}

Kozlova, Jekaterina ^{[1
]}

Mandar, Hugo ^{[1
]}

Tarre, Aivar ^{[1
]}

Sammelselg, Vaino ^{[1
]}

机构：

[1] Univ Tartu, Inst Phys, W Ostwald Str 1, EE-50411 Tartu, Estonia

来源：

SURFACE & COATINGS TECHNOLOGY | 2021年 / 411卷

关键词：

Aluminum alloy; Pitting corrosion; Nanostructured protective coating; Amorphous structure; Atomic layer deposition; Surface engineering; ATOMIC LAYER DEPOSITION; CHROMATE CONVERSION COATINGS; LOCALIZED CORROSION; AL; 2024-T3; S PHASE; FILMS; RESISTANCE; ACID; MICROSTRUCTURE; PARTICLES;

D O I：

10.1016/j.surfcoat.2021.126993

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Effective corrosion protection via a thin ceramic coating on an Al-alloy AA2024-T3 is demonstrated. The preparation of the coating consists of two steps. First, with a special anodizing process, a chemically homogeneous thin base layer is formed on the substrate. Then, the nanoscale pores in the base layer are sealed, and the entire surface is covered with a chemically resistant Al2O3/TiO2 nanolaminate using atomic layer deposition. The sample surface is thoroughly characterized, including linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) and testing by long-term immersion in a salt solution. The coating withstands LSV up to 10 V versus saturated calomel electrode (SCE) and salt solution immersion of 7152 h (298 days).

引用

页数：13

共 80 条

[61] Composition and thickness determination of thin oxide films: comparison of different programs and methods
Sammelselg, V
Aarik, J
Aidla, A
Kasikov, A
Heikinheimo, E
Peussa, M
Niinisto, L
[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, 1999, 14 (03) : 523 - 527
[62] Sammelselg V., 2017, [No title captured], Patent No. [US9,834,849B2, 9834849]
[63] Sammelselg V., 2012, WO, Patent No. [2014102758 A1, 2014102758]
[64] Sammelselg V., 2016, [No title captured], Patent No. [EP 2 938 758 B1, 2938758]
[65] Sammelselg V., 2018, [No title captured], Patent No. [JP63336477B2, 63336477]
[66] Chemical resistance of thin film materials based on metal oxides grown by atomic layer deposition
Sammelselg, Vaeino
Netsipailo, Ivan
Aidla, Aleks
Tarre, Aivar
Aarik, Lauri
Asari, Jelena
Ritslaid, Peeter
Aarik, Jaan
[J]. THIN SOLID FILMS, 2013, 542 : 219 - 224
[67] Corrosion resistance of TiO2 films grown on stainless steel by atomic layer deposition
Shan, C. X.
Hou, Xianghui
Choy, Kwang-Leong
[J]. SURFACE & COATINGS TECHNOLOGY, 2008, 202 (11) : 2399 - 2402
[68] A study on pitting corrosion of aluminum alloy 2024-T3 by scanning microreference electrode technique
Shao, MH
Fu, Y
Hu, RG
Lin, CJ
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 344 (1-2): : 323 - 327
[69] Simulating corrosion of Al2CuMg phase by measuring ionic currents, chloride concentration and pH
Shi, Hongwei
Tian, Zhenhuang
Hu, Tianhui
Liu, Fuchun
Han, En-Hou
Taryba, M.
Lamaka, S. V.
[J]. CORROSION SCIENCE, 2014, 88 : 178 - 186
[70] Morphological analysis of pits formed on Al 2024-T3 in chloride aqueous solution
Silva, JWJ
Bustamante, AG
Codaro, EN
Nakazato, RZ
Hein, LRO
[J]. APPLIED SURFACE SCIENCE, 2004, 236 (1-4) : 356 - 365

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