A kinetic study of controlling nitrogen in process for boron steel by using 30N2 isotope gas

Seung Min Han, Dong Joon Min, Joo Hyun Park, Jung Ho Park, Jong Min Park

Research output: Contribution to journalArticle

Abstract

The kinetic study of the nitrogen dissolution was investigated. An isotope exchange technique is employed as a method for measuring the rate of nitrogen dissolution into the molten steel and the effects of O, S, C, Mn, and B addition on surface reaction have been considered at 1873 K. Experimental result shows nitrogen dissolution is first order reaction with regard to the partial pressure of nitrogen and rate constant on bare surface of the liquid metal, k0 is 3.49 Õ 10-5 (mol/cm2.satm). It seems that the rate determining step is the dissociation reaction with nitrogen gas adsorption. The adsorption coefficients are calculated to be KO = 300, KS = 130, KMn = -0.26, and KB = 0.9.

Original languageEnglish
Pages (from-to)601-608
Number of pages8
JournalRevue de Metallurgie. Cahiers D'Informations Techniques
Volume105
Issue number12
DOIs
Publication statusPublished - 2008 Dec

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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