Oxidizing Influence over Surface Structures and Properties for A3k Steel Nitrocarburized in Fluidized Bed

  • Nelu CAZACU "Dunarea de Jos" University of Galati, Romania
  • Sorin DOBROVICI "Dunarea de Jos" University of Galati, Romania
  • Adolf BÂCLEA Socomar SRL, Sorento, Italy
  • Victor TĂNĂSESCU S.C. Nalba S.R.L., Galaţi, Romania
  • Nelu PREDA Bristol International, Los Angeles, California, USA
Keywords: oxinitrocarburizing, fluidized bed

Abstract

Surface duplex thermochemical treatment (oxinitrocarburizing) has principal scope to obtaining superficial mechanical higher properties with increasing corrosion capacity. The paper is based by oxinitrocarburizing experiments made in laboratory conditions over steel samples (low carbon steels, A3k). Active media for treatments was obtaining by ammonia, methane and air. Effective treatment was made in endothermic atmosphere, methane and ammonia that produced smooth fluidization. In a second stage o postoxidation at different time was made. The results of duplex surface treatments were investigated by superficial hardness (HV5) and by metallographic structure.

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References

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Published
2006-11-15
How to Cite
1.
CAZACU N, DOBROVICI S, BÂCLEA A, TĂNĂSESCU V, PREDA N. Oxidizing Influence over Surface Structures and Properties for A3k Steel Nitrocarburized in Fluidized Bed. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15Nov.2006 [cited 29Mar.2024];29(2):7-1. Available from: https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/3195
Section
Articles

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