Effect of flow velocity on corrosion behaviour of spark plasma sintered Fe-Cr-Ni reinforced with TiN in 3.5 wt% NaCl

O. O. Ige, S. R. Oke, O. E. Falodun, S. Aribo, K. M. Oluwasegun, O. O. Ajibola, J. O. Olawale, A. Ogunbadejo, O. T. Olalemi, P. A. Olubambi

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

This study investigated the effect of varying flow velocities on the corrosion behavior of titanium nitride reinforced Fe-Cr-Ni (Duplex Stainless Steel - UNS S32205) manufactured by spark plasma sintering. The TiN reinforcement was within the range of 0-8% at an interval of 2%. The spark plasma sintering parameters are sintering temperature (1150 °C), sintering time (10 mins), applied pressure (50 Mpa) and heating rate (100 °C/mins). The sintered samples were subjected to both gravimetric and electrochemical measurement in 3.5 wt% NaCl at a flow velocity of 1.0 m/s and increasing at 0.5 m/s till 2.5 m/s. A field emission scanning electron microscope (FESEM) equipped with energy dispersive x-ray spectrometer (EDS) was employed to carry out the microstructural characterizations of the corroded sintered products. The results showed that increasing the flow velocity decreased the passive current, but leads to more positive corrosion potential of the sintered products. The active-passive behaviour and the role of microstructures on the reinforced sintered composites in 3.5 wt% NaCl are discussed.

Original languageEnglish
Pages (from-to)688-695
Number of pages8
JournalMaterials Today: Proceedings
Volume38
DOIs
Publication statusPublished - 1 Jan 2021
Event2020 International Symposium on Nanostructured, Nanoengineered and Advanced Materials, ISNNAM 2020 - Gold Reef City, South Africa
Duration: 30 Apr 20203 May 2020

Keywords

  • DSS 2205
  • Flow induced-corrosion
  • Powders
  • Simulated seawater
  • Sintering
  • Titanium nitride

ASJC Scopus subject areas

  • General Materials Science

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