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Journal of Heat Treating

, Volume 9, Issue 2, pp 73–80 | Cite as

A scanning auger microscopy characterization of the internal oxidation produced on carburizing

  • J. D. Verhoeven
  • Nailu Chen
  • A. J. Bevolo
Article

Abstract

Internal oxidation during endothermic gas carburizing was studied in one plain carbon and three alloy steels. The oxide phases formed were analyzed using combined scanning Auger microscopy and thin window energy dispersive x-ray spectroscopy. The work verifies that the morphology of the internal oxides consists of two zones. In the outer zone near the carburized surface (zone 1) particles of Cr-Mn oxides form both within grains and on grain boundaries, and in the deeper zone (zone 2) a Si rich oxide is present exclusively on grain boundaries. Auger depth profiling of the Si rich oxide layer on the grain boundaries in zone 2 shows that it consists primarily of a mixture of SiO2 and Fe2SiO4. Point analysis on polished and sputter cleaned flat sections and depth profiles on fracture surfaces both indicate that the Si rich oxide layers along the grain boundaries are around 120 nm thick.

Keywords

Auger Internal Oxidation Fe2SiO4 United Nations Industrial Development Organization Scanning Auger Microscope 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    G. Parrish,The Influence of Microstructure on the Properties of Case Carburized Components, Chapter 1, American Soc. Metals, Metals Park, Ohio, 1980.Google Scholar
  2. 2.
    I.S. Kozlovskii, A.T. Kalinin, A. Ya. Novikova, E.A. Lebedeva, and A.I. Feofanova,Metal Sci. and Heat Treatment, 1967, No. 3, 157–161.Google Scholar
  3. 3.
    R. Chatterjee-Fischer,Met. Trans., 1978, vol.9A, pp. 1553–1560.Google Scholar
  4. 4.
    V.D. Kal’ner and S.A. Yurasov,Metal Sci. Heat Treatment, 1970, No. 6, pp. 451–454.Google Scholar
  5. 5.
    S. Yitang, Xu De, and L. Jianqiao,Heat Treatment and Surface Engineering, Proc. 6th Int. Cong. Heat Tr. Mat., pp. 305–311, Ed. G. Krauss, American Soc. Metals, Metals Park, Ohio, 1988.Google Scholar
  6. 6.
    I. Ya. Arkhipov,Metal Sci. Heat Treatment, 1973, No. 7, pp. 622–624.Google Scholar
  7. 7.
    A.J. Bevolo,Characterization of Semiconductor Materials Principles and Methods, Vol. 1, Chap. 4, p. 147, Noyes Publ., Park Ridge, New Jersey, 1989.Google Scholar
  8. 8.
    K.F.J. Heinrich and D.E. Newbury,Met. Handbook, 9th Ed., Vol. 10, p. 525, American Soc. Metals, Metals Park, Ohio, 1986.Google Scholar
  9. 9.
    S.A. Tipton, F.D. Keil, S. Holloway, D.R. Gromer, and F.L. Biltgen, Carburized Low Silicon Steel Article and Process, U.S. Patent No. 4,921,025, May 1, 1990.Google Scholar

Copyright information

© Springer-Verlag New York Inc 1992

Authors and Affiliations

  • J. D. Verhoeven
    • 1
  • Nailu Chen
    • 2
  • A. J. Bevolo
    • 1
  1. 1.Materials Science and Engineering Department and Ames LaboratoryIowa State UniversityAmes
  2. 2.Zhengzhou Research Institute of Mechanical EngineeringZhengzhou, HenanP.R. China

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