Evaluation of Low-Toxic Hybrid Sol-Gel Coatings with Organic pH-Sensitive Inhibitors for Corrosion Protection of AA2024 Aluminium Alloy

  1. Jaldo Serrano, Eva 1
  2. López-Sánchez, Jesús 4
  3. García-Galván, Federico 5
  4. Serrano, Aida 4
  5. Rodríguez de la Fuente, Óscar 12
  6. Barranco, Violeta 3
  7. Galván, Juan Carlos 3
  8. Carmona, Noemí 12
  1. 1 Departamento de Física de Materiales, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, Plaza Ciencias SN, 28040 Madrid, Spain
  2. 2 Instituto de Magnetismo Aplicado (IMA) “Salvador Velayos”, A6 Km 22,5, 28230 Las Rozas Madrid, Spain
  3. 3 Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC), Avda. Gregorio del Amo 8, 28040 Madrid, Spain
  4. 4 Instituto de Cerámica y Vidrio (ICV-CSIC), C/Kelsen 5, Campus de Cantoblanco, 28049 Madrid, Spain
  5. 5 Department of Engineering, School of Architecture, Engineering and Design, Universidad Europea de Madrid, 28670 Villaviciosa de Odón, Spain
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Revista:
Gels

ISSN: 2310-2861

Año de publicación: 2023

Volumen: 9

Número: 4

Páginas: 294

Tipo: Artículo

DOI: 10.3390/GELS9040294 GOOGLE SCHOLAR lock_openDocta Complutense editor

Otras publicaciones en: Gels

Resumen

Today’s environmental needs require the reduction of the weight of vehicles, thus reducingfuel consumption and associated emissions. For this reason, the use of light alloys is being studied,which, due to their reactivity, must be protected before use. In this work, the effectiveness of ahybrid sol-gel coating doped with various organic environmentally friendly corrosion inhibitorsapplied to an AA2024 lightweight aluminium alloy is evaluated. Some of the inhibitors tested are pHindicators, acting as both corrosion inhibitors and optical sensors for the surface of the alloy. Samplesare subjected to a corrosion test in a simulated saline environment and characterised before andafter the test. The experimental results regarding their best inhibitor performance for their potentialapplication in the transport industry are evaluated.

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Información de financiación

This research was funded by the Spanish Ministry of Science and Innovation (MICINN) for financing the projects RTI2018-095856-B-C21; and by the Spanish Ministry of Economic Affairs and Digital Transformation (MINECO) through the projects PID2020-114192RB-C41, PID2019-104717RBI00 and PID2021-122980OB-C51. A.S. acknowledges the financial support from MCIN for a “Ramón y Cajal” contract RYC2021-031236-I.

Financiadores

  • Spanish Ministry of Science and Innovation
    • RTI2018-095856-B-C21
  • Spanish Ministry of Economic Affairs and Digital Transformation
    • PID2020-114192RB-C41
    • PID2019-104717RB-I00
    • PID2021-122980OB-C51
  • MCIN for a “Ramón y Cajal”
    • RYC2021-031236-I

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