Inherent oxidation protection of Fe-5Cr-15Ni-2Si-4.5Mo.

Details

• Personal Author:
  Rawers JC
• Description:
  The oxidation mechanism of Fe-5Cr-15Ni-2Si-4.5Mo alloy was investigated in order to determine the role of Si and Mo in providing oxidation resistance. It was determined that the oxidation protection in the temperature range 750-950 degrees C resulted from formation of a continuous oxide sublayer of SiO2 (or possibly Fe2 SiO4).Molybdenum formed an intermetallic Fe2 Mo 1-x Si x that eventually diffused out into the grain boundaries and formed a protective barrier to the oxidation process. The mechanism behind the improved oxidation is the formation of a SiO2 layer at the metal-oxide interface that retards the outward diffusion of Fe. It was also established that the oxidation mechanism was controlled by an activation energy equal to that of Fe3+ ions diffusing through SiO2. [Description provided by NIOSH]
• Subjects:
  Chemistry Ferrous Compounds Metals Nickel Occupational Health Safety
• Keywords:
  Oxidative-processes; Oxidation; Iron-oxides; Iron-compounds; Nickel-compounds; Metal-compounds; Metallic-compounds; Chemical-reactions; Chemical-kinetics
• Series:
  Mining Publications
• ISSN:
  0030-770X
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Oregon ; OSHA Region 10
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  ALRC - Albany Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  183-194
• Volume:
  28
• Issue:
  3
• NIOSHTIC Number:
  nn:10011843
• Citation:
  Oxid Met 1987 Oct; 28(3-4):183-194
• Federal Fiscal Year:
  1988
• Peer Reviewed:
  True
• Source Full Name:
  Oxidation of Metals
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/247180/cdc_247180_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]