Sealing effect on corrosion resistance of boric sulfuric acid anodizing on AA2024

Authors

DOI:

https://doi.org/10.15587/1729-4061.2023.277961

Keywords:

corrosion resistance, acetic acid, AA2024, boric sulfuric acid anodization

Abstract

Aluminum is widely used due to its excellent properties, lightweight and thermal conductivity. However, when used in aircraft applications, it can cause corrosion and sticking, compromising safety. To address this issue, anodizing is used to improve aluminum's corrosion resistance and adhesion. In this study, the AA2024 material was anodized using the boron-sulfuric acid anodization (BSAA) process, followed by a sealing process using acetic acid. This sealing process forms an oxide layer on the aluminum's surface, which reduces the corrosion rate. The study investigated the effects of anodization voltage and time on the results of BSAA anodization through quantitative and qualitative measurements, including corrosion resistance, potentiodynamic polarization, scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). The results showed that samples anodized with a gasket could reduce the corrosion rate by up to 85 % compared to those without a gasket and substrate. The most significant reduction in corrosion rates occurred at an anodization voltage of 10 V and an anodization time of 15 min. The potentiodynamic test results indicated that the Tafel plot during sealing lies in the cathodic region where the corrosion current density decreases with increasing voltage. SEM observations revealed that the anodizing process could provide an oxide layer on the samples' surface, while the sealing process creates a smooth surface. EDS analysis showed that an oxide compound was formed in an oxide bond state after the sample surface was subjected to the sealing treatment. Overall, the study demonstrates the effectiveness of BSAA anodization in improving corrosion resistance and highlights the importance of considering the anodization parameters

Supporting Agency

  • This research is supported by the Mechanical Engineering Laboratory, Hasanuddin University.

Author Biographies

Muhammad Zuchry, Hasanuddin University

Doctoral Student, Graduate Student

Departement of Mechanial Engineering

Ilyas Renreng, Hasanuddin University

Doctorate, Professor

Departement of Mechanical Enginering

Hairul Arsyad, Hasanuddin University

Doctorate, Assistant Professor

Departement of Mechanical Enginering

Lukmanul Hakim Arma, Hasanuddin University

Doctorate, Assistant Professor

Departement of Mechanical Enginering

Agus Widyianto, Universitas Negeri Yogyakarta

Doctorate

Department of Mechanical and Automotive Engineering

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Sealing effect on corrosion resistance of boric sulfuric acid anodizing on AA2024

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Published

2023-04-30

How to Cite

Zuchry, M., Renreng, I., Arsyad, H., Arma, L. H., & Widyianto, A. (2023). Sealing effect on corrosion resistance of boric sulfuric acid anodizing on AA2024. Eastern-European Journal of Enterprise Technologies, 2(6 (122), 43–52. https://doi.org/10.15587/1729-4061.2023.277961

Issue

Vol. 2 No. 6 (122) (2023): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

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Copyright (c) 2023 Muhammad Zuchry, Ilyas Renreng, Hairul Arsyad, Lukmanul Hakim Arma, Agus Widyianto

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