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The Corrosion of an Amorphous Fe70C10P10B5Mo5 Alloy in Various CO2/CO Mixed Gases at 500 °C

Authors
  • Kai, W.1
  • Cheng, F. P.1
  • Chen, Y. T.1
  • Huang, R. T.1
  • Huang, H. H.2
  • Zhang, W.3
  • 1 National Taiwan Ocean University, Institute of Materials Engineering, Keelung, 20224, Taiwan, ROC , Keelung (Taiwan)
  • 2 National Yang Ming University, Department of Dentistry, Taipei, 11221, Taiwan, ROC , Taipei (Taiwan)
  • 3 Dalian University of Technology, School of Materials Science and Engineering, Dalian, Liaoning, 116024, People’s Republic of China , Dalian (China)
Type
Published Article
Journal
Oxidation of Metals
Publisher
Springer US
Publication Date
Feb 21, 2019
Volume
91
Issue
3-4
Pages
437–449
Identifiers
DOI: 10.1007/s11085-019-09904-2
Source
Springer Nature
Keywords
License
Yellow

Abstract

The corrosion behavior of an Fe70C10P10B5Mo5 amorphous ribbon was investigated in various CO2/CO mixed gases within the oxygen partial pressure range 7.2 × 10−24 to 7.2 × 10−22 Pa at 500 °C. In general, the amorphous alloy exhibited exclusive oxidation throughout the study, and its oxidation kinetics followed the parabolic rate law. The parabolic rate constants steadily increased with increasing oxygen pressure, indicating a typical scaling behavior for p-type semiconductivity. The scale formed on the glassy alloy consisted mostly of Fe3O4 and a minor amount of B2O3, and the formation of B2O3 is responsible for the lower scaling rate of the glassy alloy as compared with that of pure Fe.

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