Anodic dissolution of rapidly quenched amorphous Ni81P19 alloys of different initial melt temperatures

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Abstract

The anodic behaviour of rapidly quenched Ni81P19 samples prepared at different melt temperatures was investigated in 1.0moldm-3 aqueous HCl solution. The electrochemical properties of the alloys kept in melt at different temperatures are significantly influenced by the initial melt temperature. X-ray diffractometry suggests that this behaviour is associated with the presence of different quantities of crystalline secondary phase(s). On the basis of potentiodynamic polarization curves and potential-time functions recorded at constant current the alloys were characterized by a charge per surface unit amount proportional to the secondary phase content. A new model was proposed to characterize the anodic dissolution of alloys containing crystalline clusters.

Original languageEnglish
Pages (from-to)403-411
Number of pages9
JournalJournal of Applied Electrochemistry
Volume26
Issue number4
Publication statusPublished - Dec 1 1996

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry
  • Materials Chemistry

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