Journal Published Online: 30 March 2021
Volume 10, Issue 1

Kinetic Analysis of Pack-Borided Gray Cast Iron

CODEN: MPCACD

Abstract

In this work, a gray cast iron containing copper of grade EN-GJL-250 was pack-borided within the temperature range of 800°C–1,000°C with treatment times of 2–6 h. According to the X-ray diffraction analysis, the Fe2B phase has been identified over the surface of this material and the boride layer has an average thickness between 20.8 ± 2.9 and 149.1 ± 10.2 µm. The morphological aspect of the Fe2B layer was investigated with a scanning electron microscope. The regression model based on the ANOVA analysis has been established to investigate the growth kinetics of boride layers on EN-GJL-250 gray cast iron. The boron activation energies in the EN-GJL-250 cast iron were estimated as 148.03 and 147.96 kJ mol−1 by the parabolic growth law and the mean diffusion coefficient method, respectively. Furthermore, the experimental Fe2B layers’ thicknesses were in accord with the predicted values given by the regression model and the MDC method.

Author Information

Azouani, O.
Institut Algérien de Formation en Génie Nucléaire, Draria, Algiers, Algeria Département de Métallurgie, Commissariat à l’Energie Atomique, Centre de Recherche Nucléaire de Draria, Draria, Algiers, Algeria
Keddam, M.
Université des Sciences et de Technologie Houari Boumediene, Faculté de Génie Mécanique et Génie des Procédés, Laboratoire de Technologie des Matériaux, Bab-Ezzouar, Algiers, Algeria
Allaoui, O.
Département de Mécanique, Université Amar Telidji de Laghouat, Laboratoire de Génie des Procédés, Laghouat, Algeria
Sehisseh, A.
Département de Métallurgie, Commissariat à l’Energie Atomique, Centre de Recherche Nucléaire de Draria, Draria, Algiers, Algeria
Pages: 11
Price: $25.00
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Stock #: MPC20200176
ISSN: 2379-1365
DOI: 10.1520/MPC20200176