Modificaciones de la microestructura y la capa pasiva de la aleación 2024-T3 Al-Cu durante una limpieza química empleada en la industria aeroespacial

  1. Juan Jesús Alba Galvín 1
  2. Manuel Bethencourt Núñez 1
  3. F. J. Botana 1
  4. L. González Rovira 1
  5. José María Sánchez-Amaya 1
  1. 1 Universidad de Cádiz

    Universidad de Cádiz

    Cádiz, España


Revista de metalurgia

ISSN: 0034-8570

Year of publication: 2019

Volume: 55

Issue: 2

Pages: 144

Type: Article

DOI: 10.3989/REVMETALM.144 DIALNET GOOGLE SCHOLAR lock_openOpen access editor

More publications in: Revista de metalurgia


Cited by

  • Scopus Cited by: 0 (23-09-2023)
  • Web of Science Cited by: 0 (21-09-2023)
  • Dimensions Cited by: 0 (08-04-2023)

JCR (Journal Impact Factor)

  • Year 2019
  • Journal Impact Factor: 0.878
  • Journal Impact Factor without self cites: 0.449
  • Article influence score: 0.057
  • Best Quartile: Q3
  • Area: METALLURGY & METALLURGICAL ENGINEERING Quartile: Q3 Rank in area: 59/79 (Ranking edition: SCIE)

SCImago Journal Rank

  • Year 2019
  • SJR Journal Impact: 0.171
  • Best Quartile: Q4
  • Area: Physical and Theoretical Chemistry Quartile: Q4 Rank in area: 149/189
  • Area: Metals and Alloys Quartile: Q4 Rank in area: 136/196
  • Area: Materials Chemistry Quartile: Q4 Rank in area: 242/338
  • Area: Condensed Matter Physics Quartile: Q4 Rank in area: 393/473

Scopus CiteScore

  • Year 2019
  • CiteScore of the Journal : 0.9
  • Area: Metals and Alloys Percentile: 33
  • Area: Materials Chemistry Percentile: 25
  • Area: Condensed Matter Physics Percentile: 14
  • Area: Physical and Theoretical Chemistry Percentile: 12

Journal Citation Indicator (JCI)

  • Year 2019
  • Journal Citation Indicator (JCI): 0.22
  • Best Quartile: Q4
  • Area: METALLURGY & METALLURGICAL ENGINEERING Quartile: Q4 Rank in area: 68/89


(Data updated as of 08-04-2023)
  • Total citations: 0
  • Recent citations: 0


A standard surface pretreatment for 2024-T3 Al-Cu alloy prior to the generation of chemical conversion coatings in the aerospace sector have been investigated. These pretreatments influence the alloy phases, which play a key role in the development of new eco-friendly chromium-free conversion coatings, but also in the susceptibility to localized corrosion in chloride medium. The complete pretreatment consists of two alkaline step and another acid step. Scanning Electron Microscopy revealed that after the complete pretreatment, Al(Cu,Mg) phases were partially or totally removed through dealloying with their subsequent copper enrichment, while only the aluminum matrix surrounding the Al(Cu,Fe,Mn,Si) phases was slightly attacked. Electrochemical analysis revealed the turn to cathodic character of Al(Cu,Mg) phases that still remain on the surface, while the Al(Cu,Fe,Mn,Si) phases have a higher corrosion potential than the aluminum matrix. Conversely, none of these phases were affected when only alkaline steps were employed. Identified the corrosion processes that take place in the different phases when the alloy is treated with a surface pretreatment, it is possible to design alternative Cr-free protective process.

Funding information

Este proyecto ha sido financiado por el Ministerio de Econom?a, Industria y Competitividad/ Programa FEDER (Proyecto MAT2014-60857-R).


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