Characterization of the microstructure of the anodized layer in Al alloys using high magnification and spatial resolution techniques

• Grant number: 22/06935-0
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: April 01, 2023
• End date: March 31, 2024
• Field of knowledge: Engineering - Materials and Metallurgical Engineering
• Principal Investigator: Isolda Costa
• Grantee: João Victor de Sousa Araujo
• Supervisor: Xiaorong Zhou
• Host Institution: Instituto de Pesquisas Energéticas e Nucleares (IPEN). São Paulo , SP, Brazil
• Institution abroad: University of Manchester, England
• Associated to the scholarship: 19/18388-1 - Effect of the microstructure of high strength Al alloys on formation and corrosion resistance of the anodized layer, BP.DR

Abstract

This project aims to study the anodizing behavior of high-strength, aeronautical-grade Al-Cu-Li alloys using high-resolution microstructural characterization techniques, such as Transmission Electron Microscopy (TEM), 3D volumetric reconstructions by electron microscopy. Through these techniques, it will be possible to identify the distribution, size and morphology of the hardening phases present in these alloys, as well as the chemical composition and morphology of the anodized layer obtained in sulfuric tartaric acid solution (TSA). Therefore, it will be possible to correlate the effect of the microstructure of the Al alloys on the formation of the anodic layer. These results are expected to provide a better understanding of the formation and performance of the anodic films formed in aluminium alloys. (AU)

Scientific publications

(8)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ARAUJO, JOAO VICTOR DE SOUSA; MILAGRE, MARIANA; COSTA, ISOLDA. A historical, statistical and electrochemical approach on the effect of microstructure in the anodizing of Al alloys: a review. CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES, v. N/A, p. 61-pg., 2023-06-30. (22/06935-0, 19/18388-1)

[ANONYMOUS]. The MicroArt. METALLOGRAPHY MICROSTRUCTURE AND ANALYSIS, v. N/A, p. 1-pg., 2023-07-25. (22/06935-0)

ARAUJO, JOAO VICTOR DE S.; CHEN, JINGHUI; COSTA, ISOLDA; ZHOU, XIAORONG. Localized corrosion in anodized aluminium alloys: The role of constituent particle-induced defects in anodic films. Corrosion Science, v. 252, p. 24-pg., 2025-04-22. (22/06935-0, 19/18388-1)

ARAUJO, JOAO VICTOR DE SOUSA; MILAGRE, MARIANA XAVIER; ZHOU, XIAORONG; COSTA, ISOLDA. An assessment of pitting corrosion in anodized aluminum alloys: It might not be what it seems. MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION, v. 75, n. 5, p. 15-pg., 2024-01-03. (19/18388-1, 22/06935-0)

ARAUJO, JOAO VICTOR DE S.; CHEN, JINGHUI; QIN, JIRU; COSTA, ISOLDA; ZHOU, XIAORONG. Comparative study of anodic film formation on high-strength aluminium alloys in tartaric-sulphuric acid electrolyte. TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING, v. N/A, p. 7-pg., 2025-10-17. (19/18388-1, 22/06935-0)

ARAUJO, JOAO VICTOR DE SOUSA; COSTA, ISOLDA; ZHOU, XIAORONG. Comparison of Constituent Intermetallic Particles in Different Aluminium Alloys. METALLOGRAPHY MICROSTRUCTURE AND ANALYSIS, v. N/A, p. 14-pg., 2025-01-24. (22/06935-0, 19/18388-1)

. The MicroArt. METALLOGRAPHY MICROSTRUCTURE AND ANALYSIS, v. 13, n. 4, p. 2-pg., 2024-08-26. (22/06935-0)

JOÃO VICTOR DE S. ARAUJO; ALINE D. GABBARDO; STELA M. FERNANDES; ISOLDA COSTA. CORROSÃO LOCALIZADA DO ALUMÍNIO EM MEIOS AERADOS E EM MEIOS COM BAIXO TEOR OXIGÊNIO: ESTUDO E COMPARAÇÃO POR MEIO DE CURVAS DE POLARIZAÇÃO. Química Nova, v. 48, n. 1, 2024-12-20. (22/06935-0, 19/18388-1)