Thermally grown oxide films and corrosion performance of ferritic stainless steels under simulated exhaust gas condensate conditions

E Huttunen-Saarivirta (Corresponding Author), V-T Kuokkala, Pekka Pohjanne

Research output: Contribution to journalArticleScientificpeer-review

21 Citations (Scopus)

Abstract

Five ferritic stainless steels are characterized in terms of thermally grown oxide films and corrosion performance under simulated exhaust gas condensate conditions. Oxide films developed at 300 °C show only little variation in microstructure and properties between the alloys, whereas those evolved at 600 °C exhibit clear differences. Especially in alloys with >11.5 wt.% chromium, the presence and distribution of such alloying elements as titanium, silicon, niobium and molybdenum are crucial for the film properties and the overall corrosion performance. The results may be exploited in the compositional optimization of the alloys for the cold-end components of automotive exhaust system.
Original languageEnglish
Pages (from-to)344-365
Number of pages22
JournalCorrosion Science
Volume87
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

Gas condensates
Stainless Steel
Ferritic steel
Exhaust gases
Oxide films
Stainless steel
Corrosion
Niobium
Molybdenum
Chromium
Silicon
Alloying elements
Titanium
Microstructure

Keywords

  • stainless steel
  • oxidation
  • intergranular corrosion
  • IR spectroscopy
  • EIS

Cite this

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abstract = "Five ferritic stainless steels are characterized in terms of thermally grown oxide films and corrosion performance under simulated exhaust gas condensate conditions. Oxide films developed at 300 °C show only little variation in microstructure and properties between the alloys, whereas those evolved at 600 °C exhibit clear differences. Especially in alloys with >11.5 wt.{\%} chromium, the presence and distribution of such alloying elements as titanium, silicon, niobium and molybdenum are crucial for the film properties and the overall corrosion performance. The results may be exploited in the compositional optimization of the alloys for the cold-end components of automotive exhaust system.",
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Thermally grown oxide films and corrosion performance of ferritic stainless steels under simulated exhaust gas condensate conditions. / Huttunen-Saarivirta, E (Corresponding Author); Kuokkala, V-T; Pohjanne, Pekka.

In: Corrosion Science, Vol. 87, 2014, p. 344-365.

Research output: Contribution to journalArticleScientificpeer-review

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KW - oxidation

KW - intergranular corrosion

KW - IR spectroscopy

KW - EIS

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