The Oxidation of the HiSiMo Cast Irons Alloyed with Cr/Al at 800 °C
Journal Article
·
· Oxidation of Metals
- Ford Motor Company, Dearborn, MI (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Missouri Univ. of Science and Technology, Rolla, MO (United States)
To improve the oxidation resistance of cast iron containing Si and Mo (HiSiMo), 1wt.% Cr and 3wt.% Al were added into the base alloy to improve high temperature oxidation resistance for exhaust manifold applications. Oxidation tests were performed in both dry and wet air (air + 10% H2O) at 800 °C for 1, 10, 24, and 50 h. The mass change and oxide thickness were measured to evaluate the oxidation resistance. Scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDS) and transmission electron microscopy (TEM) were employed to characterize the oxidized samples. Here, the results showed that the additions of Al or Cr selectively oxidized to form a more oxidation resistant surface oxide layer, which reduced the mass gain during these experiments.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1856700
- Journal Information:
- Oxidation of Metals, Journal Name: Oxidation of Metals Journal Issue: 3-4 Vol. 97; ISSN 0030-770X
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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