Kinetic Study of Oxide Growth at High Temperature in Low Carbon Steel

Sixtos Antonio Arreola-Villa,Gildardo Solorio-Diáz,Octavio Vázquez-Gómez,Héctor Javier Vergara-Hernández,Gerardo Marx Chávez-Campos,Alejandro Pérez-Alvarado

doi:10.3390/met12010147

Abstract

High-temperature surface oxidation kinetics were determined for low-carbon steel using a Joule heating device on hollow cylindrical specimens. The growth of the oxide layer was measured in situ between 800 and 1050 ∘C under isothermal oxidation conditions and in an air laboratory atmosphere (O2 = 20.3% and humidity = 42%). Through a laser and infrared measuring system, the expansion and temperature were measured continuously. From the data acquired, the oxidation kinetic parameters were obtained at different temperatures with a parabolic-type growth model to estimate the rate of oxide layer generation. The convergence degree of the data fitted with the oxidation model was acceptable and appropriately correlated with the experimental data. Finally, comparisons were made between the estimated kinetic parameters and those reported in the literature, observing that the activation energy values obtained are in the range of the reported values.

Highlights

Steel continues to be the most widely used material in the different fields of engineering due to its mechanical properties and unique/irreplaceable characteristics
Despite technological advances in steel-making processes, surface oxidation at high temperature continues to be one of the study problems, since it generates a significant loss of material during the reheating of semi-finished products, billets, or slabs before and during the rolling process
Some research to reduce the growth of the oxide layer in the hot rolling process and improve the oxidation resistance of steel focused on heating systems, the rolling process, and modifying the chemical composition of alloying elements [6,7,8]

Summary

Introduction

Steel continues to be the most widely used material in the different fields of engineering due to its mechanical properties and unique/irreplaceable characteristics. Despite technological advances in steel-making processes, surface oxidation at high temperature continues to be one of the study problems, since it generates a significant loss of material during the reheating of semi-finished products, billets, or slabs before and during the rolling process. In these processes, surface oxidation occurs severely without being able to avoid; the industries seek to quantify and reduce material loss based on the study of oxidation kinetic processes [1,2,3]. The first stage begins during the reheating of the steel inside the natural gas combustion furnace. The oxide layer reaches a thickness of a few millimeters at a temperature above

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Conclusion