Effect of Ni3Al Addition and Heating Mode on the Electrochemical Response on Austenitic and Ferritic Stainless Steels

A. Raja Annamalai, A. Upadhyaya, D. Agrawal

Research output: Contribution to journalArticle

Abstract

The effect of intermetallic Ni3Al addition and heating mode on the electrochemical behavior of sintered austenitic (316L) and ferritic (434L) stainless steels is studied. The green compacts were sintered by conventional and microwave methods in solid state at 1350°C in H2 for a period of 60 min. The sintered samples were then subjected to several characterization techniques for evaluating their density and hardness, and finally their electrochemical response was evaluated through potentiodynamic polarization scan (1 mV/sec) in 0.1 N H2SO4. Upon addition of nickel aluminide, there was an increase in the densification of the composites, which was found more pronounced in case of 434L stainless steel with nickel-aluminide dispersoid composites. A positive response was also observed on the corrosion resistance of the composites as compared with the bare stainless steel compacts.

Original languageEnglish (US)
Pages (from-to)288-296
Number of pages9
JournalPowder Metallurgy and Metal Ceramics
Volume55
Issue number5-6
DOIs
StatePublished - Sep 1 2016

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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