Oxidation Behavior of Low Carbon Steel at Elevated Temperature in Oxygen and Water Vapor

Yun, Jung‐Yeul; Ha, Sang-An; Kang, Chang-Yong; Wang, Jei-Pil

doi:10.1002/srin.201300039

Cited by 11 publications

(13 citation statements)

References 11 publications

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“…The previous investigations have revealed that wet CO 2 usually produce oxide scales with more defects such as microcracks, voids and pores, which allow increased penetration paths of the oxidizing gases to the interface between the oxide scale and substrate. These oxidizing gases will react directly with pure iron and accelerate the entire oxidation rate . The oxide scale also tends to delaminate more easily than that formed in air due to accumulated growth stress inside.…”

Section: Resultsmentioning

confidence: 99%

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Oxidation behavior of carbon steel in simulated kerosene combustion atmosphere: A valuable tool for fire investigations

Xie

Guo

2017

Fire and Materials

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Summary Fire investigations aim to establish the origin and cause of fires by collecting and analyzing the comprehensive fire‐related evidences. Metallic materials exposed to the fire scene environments are usually subjected to melting and/or high‐temperature oxidation, and they have been considered vital parameters for temperature determination, as recommended in NFPA 921. The oxide characteristics obtained from the conventional fire investigations primarily rely on simple visual observations such as the variations in oxide color, the so‐called “oxidation patterns.” However, such information is not sufficiently convincing due to the complex nature of oxides formed in the fire scene. The oxide color is strongly affected by the type of oxide, the oxide thickness, the concentration of contaminant, and the interactions among different oxides. In this study, Q235 structural steel samples have been exposed to high‐temperature air and simulated kerosene combustion conditions at certain temperatures and for indicated periods. The oxidation rate was examined by thermogravimetric analysis. The morphologies and microstructures of the oxide scales were investigated by scanning electron microscopy, energy dispersive spectroscopy, and X‐ray diffractions. The results show that the oxide properties are strongly dependent on the oxidation temperature and oxidation atmospheres. These oxidation behaviors are expected to provide useful information on identifying fire characteristics.

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Section: Resultsmentioning

confidence: 99%

“…These oxidizing gases will react directly with pure iron and accelerate the entire oxidation rate. 15,16 The oxide scale also tends to delaminate more easily than that formed in air due to accumulated growth stress inside.…”

Section: Methodsmentioning

confidence: 99%

Oxidation behavior of carbon steel in simulated kerosene combustion atmosphere: A valuable tool for fire investigations

Xie

Guo

2017

Fire and Materials

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“…The controlled humid atmosphere is produced by passing dry air pass through a sealed water tank held at a given temperature. The maximum water temperature for WETSYS is 60 °C (corresponding to 20% water vapor in water‐saturated gas), which is used in this investigation . As a comparison, the oxidation behaviors of the IC are also investigated in dry air.…”

Section: Methodsmentioning

confidence: 99%

“…The maximum water temperature for WETSYS is 60 8C (corresponding to 20% water vapor in water-saturated gas), which is used in this investigation. [18] As a comparison, the oxidation behaviors of the IC are also investigated in dry air. The schematic diagram of the apparatus is illustrated in Figure 1.…”

Section: Methodsmentioning

confidence: 99%

High Temperature Oxidation of Indefinite Chill Roll Material Under Dry and Humid Atmospheres

Líu

Jiang

Chen

et al. 2015

steel research int.

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In this paper, the isothermal oxidation of the indefinite chill (IC) roll is investigated by using a thermogravimetric analyzer (TGA) from 550 to 700 °C under dry and humid atmospheres. It is found that the oxidation kinetics follow a linear trend and the oxide scale consists of two layers after the oxidation in dry air but three layers in humid air above 600 °C. In dry air, the graphite is covered by the oxide scale above 650 °C. The water vapor accelerates the oxidation of the matrix and the graphite. The graphite is covered by the extension of the oxide scale above 600 °C in humid air. The as‐treated samples are examined with SEM and XRD, while the kinetics is based on TGA results.

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“…Yun et al showed that for oxidation of a low carbon steel at 500 °C, wustite was not detected, whereas wustite was dominant layer for oxidation at 700 °C. Also, Yun et al acquired higher oxygen rate for oxygen containing water vapor compared with those in dry gases. Carbon is the most important alloying element influencing the oxidation kinetics .…”

Section: Introductionmentioning

confidence: 99%

Influence of Nickel on High‐Temperature Oxidation and Characteristics of Oxide Layers in Two High‐Strength Steels

Vedaei-Sabegh

Morin²,

Jahazi

2019

steel research int.

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The oxidation behaviors of two high‐strength medium carbon steels with different Ni concentrations are investigated by means of differential thermal analysis equipped with thermogravimetry (TG). Four different oxidation temperatures and five oxidation times are tested. A parabolic behavior is observed for the oxide growth in both alloys; however, the relative increases in the oxidation rate from one temperature to another are not similar for both alloys, and the oxidation kinetics of the Ni‐rich steel are significantly lower than those of the low Ni alloy. On the basis of the TG results, the activation energy for the oxidation of the two alloys is determined. The influence of Ni content on the microstructure and characteristics of the different oxide layers is studied using a combination of laser confocal microscopy, electron microscopy, and X‐ray diffraction (XRD) analysis. The results revealed a clear influence of Ni on the nature and relative presence of different oxide layers. The results are interpreted in terms of the influence of Ni on the diffusion of oxygen through the oxide layer.

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Oxidation Behavior of Low Carbon Steel at Elevated Temperature in Oxygen and Water Vapor

Cited by 11 publications

References 11 publications

Oxidation behavior of carbon steel in simulated kerosene combustion atmosphere: A valuable tool for fire investigations

Oxidation behavior of carbon steel in simulated kerosene combustion atmosphere: A valuable tool for fire investigations

High Temperature Oxidation of Indefinite Chill Roll Material Under Dry and Humid Atmospheres

Influence of Nickel on High‐Temperature Oxidation and Characteristics of Oxide Layers in Two High‐Strength Steels

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