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Corrosion behavior of as-cast ZK60 alloy modified with rare earth addition in sodium sulfate medium

Corrosion Science, ISSN: 0010-938X, Vol: 158, Page: 108092
2019
  • 17
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Metrics Details

  • Citations
    17
    • Citation Indexes
      17
  • Captures
    25

Article Description

The corrosion resistance of the as-cast ZK60 alloy with and without 1.5 %wt rare earth (RE) addition and submitted to a dip sol-gel coating was investigated using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) in 0.1 mol/L Na 2 SO 4 solution. Analysis using scanning Kelvin probe force microscopy (SKPFM) was carried out to investigate the corrosion attack mechanism on these alloys. The RE addition has accelerated the ZK60 alloy dissolution by formation of a less noble RE-rich second phase. The dip sol-gel coating was not confirmed as a powerful tool to enhance the protection against corrosion in the as-cast ZK60 alloys.

Bibliographic Details

Verona Biancardi Oliveira; Luccas Rosa Viera; Bruno de Abreu Lima; Pedro Renato Tavares Avila; Galtiere Corrêa Rêgo; Haroldo Cavalcanti Pinto; Ivan Napoleão Bastos; Erenilton Pereira da Silva

Elsevier BV

Chemistry; Chemical Engineering; Materials Science

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