Surface Tension of Liquid Fe–Ti Alloys at 1 823 K

Abstract

Surface tension of liquid Fe-Ti alloys has been determined by using the constrained drop method at 1 823 K in Ar-10%H 2 gas atmosphere. It was found that the surface tension of liquid Fe-Ti alloy decreases slightly with increasing titanium content. In addition, the surface tension of Fe-Ti alloy was also obtained by a theoretical calculation. It was found that the experimental results became slightly lower than the calculated results with increasing titanium content. This paper also discusses the possible reasons for the slight decrease in the surface tension with increasing the titanium content.KEY WORDS: surface tension; liquid Fe-Ti alloys; constrained drop method.

Oxidation of Ti Added ULC Steel by CO Gas Simulating Interfacial Reaction between the Steel and SEN during Continuous Casting

“…However, there were also a few reports that Ti does not lower the surface tension/contact angle. [14][15][16] The previous observations might be attributed to possible contamination of Ti sample 15) or impurities in alumina substrate used for the contact angle measurement. 17) In particular, Bernhard and co-workers 13,17) found during their contact angle measurement between Fe-Ti alloy and alumina substrate that using almost pure alumina substrate did not lower the contact angle noticeably, while using less pure alumina substrate lowered the contact angle significantly.…”

“…When observation of nozzle clogging material, 6,8) discrepancies in surface tension/contact angle measurement, [12][13][14][15][16] and oxide stability diagram of the Fe-Al-Ti-O system, [19][20][21][24][25][26][27] it may be suggested that interfacial reaction between liquid Ti-ULC steel and nozzle refractory should be carefully considered. Forming interfacial phase would change adhesion character between the steel and the refractory.…”

Synthesis of a Novel Hydrogel for Adsorptive Removal of Crystal Violet and Naproxen Pollutants from Wastewater

“…The analysis was performed to identify the mineral composition, Figure 2. The peak intensity observed 2θ=30.29°, 35.49°,43.34°, 53.99°, 57.19°, 62.84°, There observed on crystal plates (220), (311), (400), (422), (511), and (440) confirm the existence of ferrite (cubic spinel) [19] . A bulge of 20 to 30 degrees proved the presence of perlite.…”

Estimation of Activity Coefficient of Solute in Infinite Dilute Liquid Iron Based on Surface Tension of Binary Liquid Fe Alloys

“…Surface activity of solute relative to iron. 27,30,33,36) 29) indicate the result that the surface tension for liquid Fe-Ti alloy rarely changes in the low Ti concentration range. It has been confirmed that the surface tension for liquid Fe-Cr alloy has no composition dependence based on a measurement result via the levitated oscillating drop method by Nogi et al, 30,31) although the data on the surface tension for liquid Fe-Cr alloy has exhibited a large scatter in the past because of the high reactivity of Cr.…”

“…Although Ce, La and Ti have a high reactivity like Al, no surface tension data have been obtained by the levitated oscillating method for a Fe-based liquid alloy containing Ce, La and Ti. Therefore, the dσ/d[at%] was reviewed based on previous reports28,29) that are not included in Keene's compilation. Ryabov et al28) reported that Ce and La act as a surface active component against liquid steel, which means that Ce and La are considered to be surface active components for liquid iron.…”