Effect of carbon dissolution reaction on wetting behaviour of molten Fe-C alloy on graphite substrate in the initial contact period

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

A wetting behaviour of Fe-C sample on carbonaceous materials has been extensively investigated to understand the liquid flow behaviour in lower part of blast furnace. The previous studies reported a large change in apparent contact angle in the initial contact period in the wetting between the Fe-C sample and the carbonaceous materials substrate. The carbon dissolution reaction and the interfacial morphology in the initial contact period would strongly affect the wetting behaviour in this period. To further understand the wetting behaviour between the Fe-C sample and the substrate, the effects of the carbon dissolution reaction on the wetting behaviour in the initial contact period must be considered. Fe-3.70, 4.26, 4.90 mass% C samples were fabricated using a high-frequency induction heating furnace under an inert gas atmosphere. The graphite substrate was made from 99.90% pure graphite powder using a hot press furnace under an argon gas atmosphere. The wetting behaviour of the graphite substrate with molten Fe-C sample is investigated using a sessile drop method with a molten sample injection and quenching systems. The results shown that the apparent contact angles significantly decreased from the initial apparent contact angle. The carbon concentration of the carbon-unsaturated Fe-C sample gradually increased and reached the saturation after the 300 s of contact. The formation of concave was observed and developed in the initial contact period due to the transfer of carbon atoms into the carbon-unsaturated Fe-C sample. The wetting behaviour was dependent on interfacial energy of solid-liquid phases before the formation of concave. After the formation of concave, the wetting behaviour dominantly depended on interfacial morphology change.

元の言語英語
ページ(範囲)1491-1498
ページ数8
ジャーナルisij international
57
発行部数9
DOI
出版物ステータス出版済み - 1 1 2017

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Graphite
Wetting
Molten materials
Dissolution
Carbon
Substrates
Contact angle
Heating furnaces
Noble Gases
Induction heating
Argon
Liquids
Blast furnaces
Inert gases
Interfacial energy
Powders
Contacts (fluid mechanics)
Quenching
Furnaces
Gases

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

これを引用

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title = "Effect of carbon dissolution reaction on wetting behaviour of molten Fe-C alloy on graphite substrate in the initial contact period",
abstract = "A wetting behaviour of Fe-C sample on carbonaceous materials has been extensively investigated to understand the liquid flow behaviour in lower part of blast furnace. The previous studies reported a large change in apparent contact angle in the initial contact period in the wetting between the Fe-C sample and the carbonaceous materials substrate. The carbon dissolution reaction and the interfacial morphology in the initial contact period would strongly affect the wetting behaviour in this period. To further understand the wetting behaviour between the Fe-C sample and the substrate, the effects of the carbon dissolution reaction on the wetting behaviour in the initial contact period must be considered. Fe-3.70, 4.26, 4.90 mass{\%} C samples were fabricated using a high-frequency induction heating furnace under an inert gas atmosphere. The graphite substrate was made from 99.90{\%} pure graphite powder using a hot press furnace under an argon gas atmosphere. The wetting behaviour of the graphite substrate with molten Fe-C sample is investigated using a sessile drop method with a molten sample injection and quenching systems. The results shown that the apparent contact angles significantly decreased from the initial apparent contact angle. The carbon concentration of the carbon-unsaturated Fe-C sample gradually increased and reached the saturation after the 300 s of contact. The formation of concave was observed and developed in the initial contact period due to the transfer of carbon atoms into the carbon-unsaturated Fe-C sample. The wetting behaviour was dependent on interfacial energy of solid-liquid phases before the formation of concave. After the formation of concave, the wetting behaviour dominantly depended on interfacial morphology change.",
author = "Nguyen, {Cao Son} and Ko-Ichiro Ohno and Takayuki Maeda and Kazuya Kunitomo",
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AU - Nguyen, Cao Son

AU - Ohno, Ko-Ichiro

AU - Maeda, Takayuki

AU - Kunitomo, Kazuya

PY - 2017/1/1

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AB - A wetting behaviour of Fe-C sample on carbonaceous materials has been extensively investigated to understand the liquid flow behaviour in lower part of blast furnace. The previous studies reported a large change in apparent contact angle in the initial contact period in the wetting between the Fe-C sample and the carbonaceous materials substrate. The carbon dissolution reaction and the interfacial morphology in the initial contact period would strongly affect the wetting behaviour in this period. To further understand the wetting behaviour between the Fe-C sample and the substrate, the effects of the carbon dissolution reaction on the wetting behaviour in the initial contact period must be considered. Fe-3.70, 4.26, 4.90 mass% C samples were fabricated using a high-frequency induction heating furnace under an inert gas atmosphere. The graphite substrate was made from 99.90% pure graphite powder using a hot press furnace under an argon gas atmosphere. The wetting behaviour of the graphite substrate with molten Fe-C sample is investigated using a sessile drop method with a molten sample injection and quenching systems. The results shown that the apparent contact angles significantly decreased from the initial apparent contact angle. The carbon concentration of the carbon-unsaturated Fe-C sample gradually increased and reached the saturation after the 300 s of contact. The formation of concave was observed and developed in the initial contact period due to the transfer of carbon atoms into the carbon-unsaturated Fe-C sample. The wetting behaviour was dependent on interfacial energy of solid-liquid phases before the formation of concave. After the formation of concave, the wetting behaviour dominantly depended on interfacial morphology change.

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