Evaluation of Interfacial Energy between Molten Fe and Fe-18%Cr-9%Ni Alloy and Non-Metallic Inclusion-Type Oxides

Furukawa, Tomoki; Saito, Noritaka; Nakashima, Kouichi

doi:10.2355/isijinternational.isijint-2020-696

Cited by 10 publications

(3 citation statements)

References 30 publications

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“…4). 19) Wetting tests were performed by dropping the molten alloy onto the oxide substrate. Illustrations of the molten metal before and after it was pushed out of the crucible and onto the substrate are shown in Fig.…”

Section: Wetting Testsmentioning

confidence: 99%

Wettability of Molten Fe–Al Alloys against Oxide Substrates with Various SiO<sub>2</sub> Activity

et al. 2022

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The contact angle between molten Fe-Al alloy with 0.03, 0.3, and 3 mass% Al composition, and Y 2 O 3 matrix oxide substrate with 0.002, 0.32, and 1 SiO 2 activity was measured using sessile drop method in Ar atmosphere at 1 873 K, and the interfacial tension was evaluated. The contact angle and interfacial tension between the molten Fe-0.3 Al alloy and the Y 2 Si 2 O 7 + SiO 2 (a SiO2 = 1) substrate decreased over time during 60 s after the molten alloy was dropped onto the substrate. The decrease of the contact angle was 20°, and that of the interfacial tension was 628 mN•m −1 Conversely, the other contact angles and the other interfacial energies were almost stable during the same period. The decrease of the contact angles ranged between 0° and 7°, and that of the interfacial tensions ranged 4 and 195 mN•m −1 . By observing the wetting behavior for 60 min, it was recognized that the interfacial reaction between the Fe-Al alloy and the oxide substrate was the redox reaction between Al composition in the alloy and SiO 2 composition in the substrate, composed of SiO 2 decomposition reaction and Al 2 O 3 formation reaction between oxygen absorbed at the interface and Al composition in the alloy. In addition, it was indicated from the interfacial tension dependence on SiO 2 activity that the medium SiO 2 volume slag for the molten low-Al steel and the low SiO 2 volume slag for the molten high-Al steel were effective in preventing the small droplets of molten slag into the molten steel.

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Section: Wetting Testsmentioning

confidence: 99%

Wettability of Molten Fe–Al Alloys against Oxide Substrates with Various SiO<sub>2</sub> Activity

et al. 2022

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“…They found that the fine irregularity and the large pores on the coke surface have different influences on the sliding angle of the droplet. T. Furukawa et al 8) measured the contact angle and interfacial energy between molten Fe and Fe-Cr-Ni alloy, and non-metallic inclusion-type oxide substrates at 1 873 K. They found that the interfacial tension and energy between molten Fe-Cr-Ni alloy and the substrates were lower than those between molten Fe and the substrates. N. Saito et al 9) investigated the apparent viscosity of suspensions of polyethylene beads in a matrix of silicone oil or aqueous glycerol at room temperature.…”

Section: Effect Of Viscosity and Surface Roughness On Improvement Of ...mentioning

confidence: 99%

Effect of Viscosity and Surface Roughness on Improvement of Solid-liquid Wettability by Ultrasonic Vibration

2022

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“…Over the past two decades, several researchers have addressed the issue of wetting at the interface of Cr-Ni steel and refractory material under different oxygen partial pressure [33][34][35][36][37][38][39]. To the best of our knowledge, no one has addressed the effect of oxygen contained in the order of hundreds of ppm on the interfacial behavior of low-alloy steels containing chromium and nickel.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Trace Oxygen Addition on the Interface Behavior of Low-Alloy Steel

et al. 2022

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This work aims to assess the effect of an oxygen content graded in minimal quantities, on the order of hundreds of ppms, on the determination of surface tension of low-alloy FeCOCr and FeCONi steels in contact with a corundum substrate. Oxygen, as a surface-active element, was segregated at the surface where it interacted with the major components of the alloys, leading to a reduction in surface tension. The sessile drop method was used for wetting tests in the temperature range from steel liquidus temperatures to 1600 °C under nonoxidizing conditions. The effect of oxygen on surface tension and wetting angles was verified by statistical analysis using the Kruskal–Wallis test, which supported the results stating that the values of these quantities decreased with increasing oxygen content. Furthermore, liquidus temperatures, which are of practical importance, were determined by the optical and DTA methods and then compared with theoretically calculated temperature values. It turned out that the increased chromium content causes difficulties in determining surface tension up to 1550 °C due to the formation of a thin Cr2O3 layer. In addition, SEM and XRD analyses accompanied by calculations in the FactSage oxide database were performed to better understand the wetting mechanism.

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Evaluation of Interfacial Energy between Molten Fe and Fe-18%Cr-9%Ni Alloy and Non-Metallic Inclusion-Type Oxides

Cited by 10 publications

References 30 publications

Wettability of Molten Fe–Al Alloys against Oxide Substrates with Various SiO<sub>2</sub> Activity

Wettability of Molten Fe–Al Alloys against Oxide Substrates with Various SiO<sub>2</sub> Activity

Effect of Viscosity and Surface Roughness on Improvement of Solid-liquid Wettability by Ultrasonic Vibration

The Effect of Trace Oxygen Addition on the Interface Behavior of Low-Alloy Steel

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