Longer Term Oxidation Kinetics of Low Carbon, Low Silicon Steel in 17H2O–N2 at 900°C

Chen, R. Y.; Yuen, W. Y. D.

doi:10.1007/s11085-016-9608-1

Cited by 12 publications

(6 citation statements)

References 33 publications

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“…There are some studies on the effect of silicon alloys on oxide formation [26][27][28][29][30]. Some research has been conducted on the effects of the presence of water vapors on the oxidation behavior of low-carbon steel [31][32][33]. Studying the oxidation behavior of hot-rolled steel established from medium and thin slabs is the purpose of the current paper.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of the Oxidation Behavior of Hot-Rolled Steel established from Medium and Thin Slabs oxidized in 20% H2O-N2 at 600-900°C

Singthanu,

Nilsonthi

2024

Eng. Technol. Appl. Sci. Res.

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This study focuses on the oxidation behavior of oxide scale on hot-rolled steel from a Thailand steel industry. Hot-rolled steel established from the medium and thin slabs was studied. The oxidation behavior was conducted in a horizontal furnace with 20%H2O-N2 to simulate steel oxidation during the hot rolling line. The scale was formed at a temperature range of 600-900°C for 30, 60, and 90 min. The scale morphology can be seen via Scanning Electron Microscope (SEM-EDS). The oxide phase was investigated via X-Ray Diffraction (XRD). The results show that iron oxides such as hematite (Fe2O3) and magnetite (Fe3O4) were produced on the studied steel. The oxidation behavior of the studied steel was followed by a parabolic law. The mass gain increased with increasing temperatures. The steel established from a medium slab exhibited a lower oxidation rate than the steel established from a thin slab. The reason for this could be the high amount of oxide containing silicon at the steel-scale interface, which promoted the oxidation resistance of the steel established from the medium slab. The influence of different slab types and its alloying elements was studied to comprehend the oxidation behavior. As a result, the alloying element in the hot-rolled steel was controlled in the design process.

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Section: Introductionmentioning

confidence: 99%

A Comparative Study of the Oxidation Behavior of Hot-Rolled Steel established from Medium and Thin Slabs oxidized in 20% H2O-N2 at 600-900°C

Singthanu,

Nilsonthi

2024

Eng. Technol. Appl. Sci. Res.

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“…During the hot rolling process, the scale is usually removed via high-pressure water (150 bar to 160 bar) [1][2][3][4][5]. Iron-oxide scale is mainly produced during the hotrolled steel surface exposed to air atmosphere and always formed on the steel surface during the process until the hot-rolled coil product [6][7][8][9][10][11][12][13][14]. The characteristic of the oxide scale depends on the alloying element [15][16][17][18][19], hot rolling temperature [20][21][22][23][24], atmosphere, rolling speed, reduction per pass, etc.…”

Section: Introductionmentioning

confidence: 99%

Examination of the adhesion of the scale formed on hot-rolled steel with different silicon content using a tensile test

SINGTHANU¹,

SURIN²,

Nilsonthi

et al. 2023

J Met Mater Miner

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In the hot-rolling process, steel was subjected to high temperatures which results in the formation of an oxide layer called scale. The oxide scale can be affected to the surface characteristic of the hot-rolled steel product. The scale must be completely removed from the surface of the steel before further processing. This research aimed to examine the adhesion behavior of scale on hot-rolled steel with different silicon contents (0.01, 0.12, 0.18, and 0.29 wt%) using a tensile testing machine with an observation setup. The results showed that the scale thickness decreased with increasing silicon content in the range of 9 µm to 12 µm. The scales were composed of hematite and magnetite. The results of the tensile test showed that the strain initiating the first spallation and the mechanical adhesion energy tend to increase with increasing silicon content. However, it decreased by 0.29 wt% Si hot-rolled steel. This result indicates that scale was difficult to remove after the hot rolling process for higher Si-containing steel.

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“…During the hot rolling line, the surface of steel is oxidized, resulting in the formation of iron oxides such as hematite (Fe2O3), magnetite (Fe3O4), and wustite (FeO) [1][2][3][4][5][6]. The structure and properties of the oxide scale depend on the alloying elements in the steel [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Influence of Silicon on Oxidation and Adhesion of Oxide Scale on Hot-Rolled Steel Strips

Nilsonthi,

Singthanu

2023

ijmst

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This research focuses on the influence of silicon alloys in hot-rolled steel strips. The steel used in the study was obtained from a hot rolling process with different silicon contents of 0.01, 0.1, 0.2, and 0.3 wt.%. The as-received oxide scale on the hot-rolled steel surface was completely removed by SiC paper and re-oxidized in a horizontal furnace with an atmosphere of 17% H2O-N2 at temperatures of 600°C, 650°C, and 700°C for 10 seconds. An investigation of scale adhesion can be done using a tensile testing machine with a CCD camera. The adhesion of the oxide scale to the steel surface was recorded on video. The oxide phase was examined by means of X-ray diffraction (XRD). The microstructure and thickness of the oxide scale were examined by a scanning electron microscope (SEM) with energy-dispersive X-ray spectroscopy (EDS). The results indicated that all steels studied produced oxide scales that consisted of hematite (Fe2O3) and magnetite (Fe3O4), which contained iron (Fe). The scale thickness tends to increase with increasing temperature, while thickness decreases with increasing Si content in steel. The oxide scale adhesion was indicated by the strain initiating the first spallation during tensile load. The results showed that the strain initiating the first scale spallation tends to decrease with increasing temperature, while scale adhesion increases with increasing Si content in steel. The mechanical adhesion of the oxide scale to the steel substrate was considered in terms of energy. The results indicate that the scale adhesion of steel with 0.3 wt.% Si was higher than that in another sample. It was possible that the presence of an oxide that contains Si at the scale-steel interface, which encourages scale adhesion. The mechanical adhesion energy of the oxide scale was shown in the range of 2-20 J/m2. The qualitative assessment of scale adhesion in terms of strain initiating the first spallation and mechanical adhesion energy suggested the good adhesion behavior of scale grown in the hot-rolled steel with 0.3 wt.% Si. This result indicates that scale formed on steel with a high silicon content tends to be difficult to remove. There was a need to control the Si content in the hot-rolled steel in a satisfactory way to save energy during the de-scale process.

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Longer Term Oxidation Kinetics of Low Carbon, Low Silicon Steel in 17H2O–N2 at 900°C

Cited by 12 publications

References 33 publications

A Comparative Study of the Oxidation Behavior of Hot-Rolled Steel established from Medium and Thin Slabs oxidized in 20% H2O-N2 at 600-900°C

A Comparative Study of the Oxidation Behavior of Hot-Rolled Steel established from Medium and Thin Slabs oxidized in 20% H2O-N2 at 600-900°C

Examination of the adhesion of the scale formed on hot-rolled steel with different silicon content using a tensile test

Influence of Silicon on Oxidation and Adhesion of Oxide Scale on Hot-Rolled Steel Strips

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