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Effect of Nitrogen on the Corrosion Behavior of Austenitic Stainless Steel in Chloride Solutions

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  • W. A. Ghanem
  • W. A. Hussein
  • S. N. Saeed
  • S. M. Bader
  • R. M. Abou Shahba

Abstract

The effect of partial replacement of nickel with nitrogen on the corrosion resistance of newly designed austenitic stainless steel samples without and with heat treated was investigated in 3.5wt% and 5wt% NaCl solution using open-circuit, potentiodynamic, cyclic anodic polarization and electrochemical impedance spectroscopy techniques. The results showed that, passivation in sample 1 where the highest addition of nickel and low addition of nitrogen is different from that for sample 4 where the nitrogen is greatest and the nickel is reduced almost to the third comparing sample 1. The difference in responses of heat treated samples to localized and general corrosion could be attributed to the difference in their phase compositions. The appearance of ferrite phase for samples (2, 4, 5 and 6) after heat treatment resulted in lowering the general and localized corrosion resistance than as forged samples in contrast with samples 1 and 3, where they still pure austenite. The obtained results are confirmed by surface examination.

Suggested Citation

  • W. A. Ghanem & W. A. Hussein & S. N. Saeed & S. M. Bader & R. M. Abou Shahba, 2015. "Effect of Nitrogen on the Corrosion Behavior of Austenitic Stainless Steel in Chloride Solutions," Modern Applied Science, Canadian Center of Science and Education, vol. 9(11), pages 119-119, October.
    • Handle: RePEc:ibn:masjnl:v:9:y:2015:i:11:p:119
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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