The Oxidation of the HiSiMo Cast Irons Alloyed with Cr/Al at 800 °C
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% H 2 O) at 800 °C...
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Published in | Oxidation of metals Vol. 97; no. 3-4; pp. 441 - 449 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
New York
Springer US
01.04.2022
Springer Nature B.V Springer |
Subjects | |
Online Access | Get full text |
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Summary: | 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% H
2
O) 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. 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. |
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Bibliography: | USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office AC05-00OR22725 |
ISSN: | 0030-770X 1573-4889 |
DOI: | 10.1007/s11085-022-10098-3 |