Effects of Al additions on sulfidation resistance of some Fe-Cr-Ni alloys

Details

• Personal Author:
  Dunning, J. S. ; Rhoads, S. C.
• Corporate Authors:
  United States. Bureau of Mines
• Description:
  "The objective of this research by the U.S. Bureau of Mines was to determine the effects of al additions on the sulfidation resistance of fe-cr-ni alloys. A series of fe-cr-ni alloys with and without additions of 4 pct al were tested in a wet s vapor atmosphere at 677 deg c. A study of the morphology and composition of corrosion scales indicated a different corrosion mechanism for al-free alloys compared with al-containing alloys. Aluminum-containing alloys formed a compact, tightly adherent layer at the metal-scale interface that reduced corrosion rates by a factor of 3 to 10 compared with that of al-free alloys. The thin, adherent al- containing scale limited inward diffusion of o and s to the base metal and outward diffusion of ni from the base metal. Aluminum- containing alloys formed a three-layer scale on oxidizing-s environments, while al-free alloys formed a less protective two- layer scale." - NIOSHTIC-2
  
  NIOSHTIC no. 10007339
  
  
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Report
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  19 numbered pages
• NIOSHTIC Number:
  nn:10007339
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:2cfff133fea29c1338c86fc4e13b5587eae9a22907ac6ccb39d9fb02512d98775dd7d12b639cd5afbe3beac4d142ae5d4297622e7d394c93d0af8f7e1a486663
• Download URL:
  https://stacks.cdc.gov/view/cdc/10435/cdc_10435_DS1.pdf
• File Type:
  [PDF - 8.41 MB ]