Morphological and microstructural aspects of metal dusting on 304L stainless steel with different surface treatments

Chao Yi Lin, Chia Hao Chang, Wen Ta Tsai

Research output: Contribution to journalReview articlepeer-review

23 Citations (Scopus)

Abstract

The effect of surface treatment on the susceptibility to metal dusting of 304L stainless steel (SS) exposed in a mixed gas of CO/CO2 = 100/1 in the temperature ranging from 500-700° C was investigated. Thermogravimetric analyses (TGA) and long-term exposure tests in the above environments, followed by surface-morphological examination and cross-section chemical composition and microstructure analyses were conducted. The results showed that the decomposition of CO gas to form graphite and nano-sized carbon filaments was affected by the surface pre-treatment applied on the 304L SS. Enhanced carbon deposition but with a significant resistance to metal dusting was found on the sand-blasted 304L SS. The existence of an initial non-protective oxide on the pre-oxidized 304L SS surface, however, gave rise to the highest susceptibility to metal-dusting-associated-localized attack. The roles of different surface treatments on the reactions between 304L SS and the exposing gas environment are discussed.

Original languageEnglish
Pages (from-to)153-174
Number of pages22
JournalOxidation of Metals
Volume62
Issue number3-4
DOIs
Publication statusPublished - 2004 Aug 1

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry
  • Metals and Alloys
  • Materials Chemistry

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