Surface tension of molten stainless steels under plasma conditions

Matsumoto, Taihei; Misono, Teruhiko; Fujii, Hidetoshi; Nogi, Kiyoshi

doi:10.1007/s10853-005-1932-9

Cited by 26 publications

(17 citation statements)

References 13 publications

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“…The experimental values in the investigated temperature range are between the reference data of Mills [35] and the data from Matsumoto et al [28] The temperature coefficient of density in the present work is consistent with the reference data and can be written in the following form:…”

Section: Densitysupporting

confidence: 88%

“…The linear fit of the upper experimental values is in agreement with the literature values ( Figure 4). In the research work of Matsumoto et al [28] the sessile drop technique was used and their stainless steels contained 110 mass ppm sulfur and <40 mass ppm oxygen. Mills and Brooks [27] utilized the EML method for their investigations using the AISI 316 steel and an extrapolated curve to their results is also shown in Figure 4.…”

Section: Surface Tensionmentioning

confidence: 99%

“…4. Surface tension of Cr-Ni-stainless steel (AISI 304) compared to Matsumoto et al [28] Mills and Brooks. [27] 16-7-3, the nitrogen pickup is highest, approximately 145 mass ppm N, but compared to the 16-7-6 and 16-7-9 alloys, the surface tension is not affected.…”

Section: Surface Tensionmentioning

confidence: 99%

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The Thermophysical Properties of Liquid TRIP/TWIP‐Steel Alloys Using the Maximum Bubble Pressure Method

Dubberstein

Heller

2013

Adv Eng Mater

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The thermophysical properties of liquid Cr‐Mn‐Ni steel alloys (16 wt% Cr, 7 wt% Mn, and 3–9 wt% Ni) are investigated using the maximum bubble pressure method in which the manganese evaporation and change in chemical composition is very low after experimental trial. The surface tension of copper was measured as reference and experimental σ is in the range of literature values. It is shown that for AISI 304 austenitic steel the surface tension decreased by an increase of oxygen concentration in steel composition. For Cr‐Ni and Cr‐Mn‐Ni steels, the temperature coefficient dσtrue/dT is positive which is explained by sulfur steel concentrations larger 50 mass ppm. A slight influence of nickel to the surface tension of Cr‐Mn‐Ni steels was experimentally observed where σ was lowered by rising weight percentage of nickel.

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Section: Densitysupporting

confidence: 88%

Section: Surface Tensionmentioning

confidence: 99%

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The Thermophysical Properties of Liquid TRIP/TWIP‐Steel Alloys Using the Maximum Bubble Pressure Method

Dubberstein

Heller

2013

Adv Eng Mater

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“…For comparison, the literature values of the surface tension of similar composition alloys are also exhibited. [3][4][5][6] Uncertainties of the measurement plot were calculated based on the GUM, 18) in which the coverage factor of kp=2 was selected. The detail of the calculation for the uncertainties will be described in the next section.…”

Section: Resultsmentioning

confidence: 99%

“…[2][3][4][5][6][7][8] Sulfur and oxygen are usually contained in stainless steels as an impurity. Since oxygen can also exist in an atmosphere as a gas phase, the surface tension of molten stainless steel is expected to be affected by the oxygen partial pressure, , of atmospheric gas as in the case of other molten metals such as iron and nickel.…”

Section: Introductionmentioning

confidence: 99%

Influence of Oxygen Partial Pressure on Surface Tension of Molten Type 304 and 316 Stainless Steels Measured by Oscillating Droplet Method Using Electromagnetic Levitation

2014

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Surface tension of molten SUS304 and SUS316 stainless steels was measured by an oscillating droplet method using electromagnetic levitation furnace to investigate the influence of oxygen partial pressure, , of atmosphere on surface tension and its temperature coefficient. We successfully measured the surface tension of molten stainless steels over a wide temperature range including an undercooling condition under Ar-He-5 vol.%H2 and Ar-He mixed gases. Although the surface tension of molten SUS304 stainless steel decreased with increasing temperature under the Ar-He-5 vol.%H2 mixed gas, the surface tension showed a boomerang temperature dependence when was fixed at 10 -2 Pa under the Ar-He mixed gas; and surface tension increased and then decreased with increasing temperature. When the surface tension of molten SUS316 stainless steel was measured under the Ar-He-5 vol.%H2 and Ar-He mixed gases, the surface tension increased with increasing temperature regardless of the atmospheric gas due to the large sulfur content. The uncertainty of the measurement was evaluated as less than 5% in this study.

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Inert Gas Atomization of High‐Nitrogen TRIP‐Steels

Korobeinikov¹,

Perminov²,

Heller³

et al. 2018

Adv Eng Mater

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High nitrogen steels with transformation induced plasticity (TRIP) effect have been recently developed within the framework of the project CRC799. These steels are utilized in a form of powder for the needs of this project. Therefore, the current study focuses on the powder production of high nitrogen steels via inert gas atomization process. Specifically, the role of nitrogen content in determination of the basic powder properties and its behavior on the atomization process are investigated. Additionally, the effects of several other process parameters, such as temperature of the melt and gas to metal ratio are discussed. Thereby, the effect of nitrogen content on the median particle size is not confirmed. Meanwhile, an increase in the spraying temperature and a rise in gas to metal ratio lead to a slight decrease in the median particle size. Nitrogen content in the powder is technologically controlled by the atmosphere above the melt before the spraying process. At last, nitrogen shows a significant impact on the phase composition of powder, by stabilizing the austenite phase. The results thus obtained are of high interest for the future application of the designed steels in the powder form.

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Surface tension of molten stainless steels under plasma conditions

Cited by 26 publications

References 13 publications

The Thermophysical Properties of Liquid TRIP/TWIP‐Steel Alloys Using the Maximum Bubble Pressure Method

The Thermophysical Properties of Liquid TRIP/TWIP‐Steel Alloys Using the Maximum Bubble Pressure Method

Influence of Oxygen Partial Pressure on Surface Tension of Molten Type 304 and 316 Stainless Steels Measured by Oscillating Droplet Method Using Electromagnetic Levitation

Inert Gas Atomization of High‐Nitrogen TRIP‐Steels

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