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Energy-efficient PEO process of aluminium alloys

  • E. Matykina*
  • , R. Arrabal
  • , A. Pardo
  • , M. Mohedano
  • , B. Mingo
  • , I. Rodríguez
  • , J. González
  • *Corresponding author for this work
    • Universidad Complutense de Madrid
    • HELMHOLTZ-ZENTRUM HEREON GMBH

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The influence of pre-anodising in sulphuric and phosphoric acids on energy efficiency of voltage-controlled PEO process of three commercial wrought and cast aluminium alloys (AA1050, AA6082 and A356) has been investigated. The precursor anodic porous films enable up to 57% energy savings during PEO and produce ∼35-40% increase of the coating microhardness compared with direct PEO. Total specific energy consumption values of 2.5-2.7 kW h m-2 μm-1 and 3.1-3.8 kW h m-2 μm-1 were achieved using phosphoric and sulphuric acid-formed precursors, respectively.

    Original languageEnglish
    Pages (from-to)13-16
    Number of pages4
    JournalMaterials Letters
    Volume127
    DOIs
    Publication statusPublished - 15 Jul 2014

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 7 - Affordable and Clean Energy
      SDG 7 Affordable and Clean Energy

    Keywords

    • Metals and alloys
    • Oxidation
    • Thick films

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