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

doi:10.1051/metal:2009004

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

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 K_O = 300, K_S = 130, K_Mn = -0.26, and K_B = 0.9.

Original language	English
Pages (from-to)	601-608
Number of pages	8
Journal	Revue de Metallurgie. Cahiers D'Informations Techniques
Volume	105
Issue number	12
DOIs	https://doi.org/10.1051/metal:2009004
Publication status	Published - 2008 Dec

All Science Journal Classification (ASJC) codes

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

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10.1051/metal:2009004

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

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 {\~O} 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.",

author = "Han, {Seung Min} and Min, {Dong Joon} and Park, {Joo Hyun} and Park, {Jung Ho} and Park, {Jong Min}",

year = "2008",

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journal = "Revue de Metallurgie. Cahiers D'Informations Techniques",

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AU - Han, Seung Min

AU - Min, Dong Joon

AU - Park, Joo Hyun

AU - Park, Jung Ho

AU - Park, Jong Min

PY - 2008/12

Y1 - 2008/12

N2 - 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.

AB - 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.

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

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