The Unit for Determining the Density and Surface Tension of Metallic Liquid Alloys, Using the Sessile Drop Method

2017 ◽  
Vol 889 ◽  
pp. 108-112
Author(s):  
Vladimir Tsepelev ◽  
Vladimir Vyukhin ◽  
Arkadi Povodator
Keyword(s):  
Surface Tension ◽  
High Temperature ◽  
Electric Furnace ◽  
Sessile Drop ◽  
Sessile Drop Method ◽  
Geometric Parameters ◽  
Liquid Alloys ◽  
Drop Surface ◽  
Horizontal Position ◽  
Metallic Liquid

There is a unit proposed for investigations in the high-temperature metallic liquid alloys, using image photometry of a “large melt drop” resting on the horizontal backplate. The unit is designed to determine the density d and surface tension σ of a sample of the mass given, placed into a horizontal electric furnace. Using a volumenometer enables measuring the geometric parameters of the drop. Various ways of expanding the range of operational functions are presented, in particular, extending the temperature range Δto and improving the unit efficiency as well as decreasing the artifacts’ impact. Updating the unit enables the studies (including the comparison studies) of both luminous and nonluminous samples to be conducted combining various ways of illuminating both the melt drop’s contours and surface. The ways of reducing the influence of vibrations and refining the backplate’s horizontal position as well as the possible measures for partial cleaning the films from the drop surface of the multicomponent melt are proposed. The use of the unit updated on the basis of approaches developed and patented by the authors enables reducing the time to be spent on measurements, expanding the range of the unit’s operational functions, decreasing the artifacts’ impact and improving the validity of the results obtained.

Surface Tension of Cu – Bi Alloys And Wettability in a Liquid Alloy – Refractory Material – Gaseous Phase System

2014 ◽  
Vol 59 (1) ◽  
pp. 282-286 ◽  
Author(s):  
B. Oleksiak ◽  
J. Łabaj ◽  
J. Wieczorek ◽  
A. Blacha-Grzechnik ◽  
R. Burdzik
Keyword(s):  
Surface Tension ◽  
High Temperature ◽  
Chemical Composition ◽  
Refractory Material ◽  
Liquid Alloy ◽  
Gaseous Phase ◽  
Sessile Drop ◽  
Sessile Drop Method ◽  
Phase System ◽  
Refractory Materials

Abstract The study involved measurements of surface tension of liquid binary copper-bismuth alloys with respect to their chemical composition and temperature as well as investigations of the liquid alloy - refractory material - gaseous phase system wettability using usual refractory materials, i.e. aluminium oxide, magnesium oxide and graphite. The experiments were performed with the use of sessile drop method and a high-temperature microscope coupled with a camera and a computer was utilised.

The Relation between the Surface Tension and the Bulk Properties of Diluted Silver Based Melts

2012 ◽  
Vol 729 ◽  
pp. 19-24 ◽  
Author(s):  
Zoltán Weltsch ◽  
Antal Lovas
Keyword(s):  
Surface Tension ◽  
Contact Angle ◽  
Solid State ◽  
Sessile Drop ◽  
Residual Resistivity ◽  
Sessile Drop Method ◽  
Liquid Alloys ◽  
Resistivity Change ◽  
Bulk Properties ◽  
Host Metal

The wettability of graphite by the Ag-M based (M: Cd, In Sn, Sb) liquid alloys was measured using the sessile drop method at a temperature interval of 1273 1473 K. Except the Ag-Cd alloys, the investigated systems exhibit worse wettability than that of Ag (host metal) melt, within the investigated temperature range. The compositional and concentration dependence of contact angle (Θ) exhibits similar trends, than the residual resistivity change measured in the same alloys in solid state. Nevertheless, the measured segregation effects during the solidification are not significant.

Surface Tension of Cu-Ag Alloys / Napiecie Powierzchniowe Stopów Cu-Ag

2013 ◽  
Vol 58 (1) ◽  
pp. 193-195 ◽  
Author(s):  
G. Siwiec ◽  
B. Oleksiak ◽  
A. Smalcerz ◽  
J. Wieczorek
Keyword(s):  
Surface Tension ◽  
High Temperature ◽  
Liquid Copper ◽  
Sessile Drop ◽  
Silver Content ◽  
Sessile Drop Method ◽  
Least Square ◽  
System Of Differential Equations ◽  
Least Square Estimation ◽  
Silver Alloys

In the paper, results of surface tension measurements with regard to liquid copper-silver alloys with the maximum silver content of 40 % mass Ag are presented. The measurements were performed at 1373-1573 K with the use of the sessile drop method. In the study, a high-temperature microscope, coupled with a camera and a computer equipped with the software designed for experiment recording and picture analysing, was applied. In order to determine surface tension values, the least square estimation of the parameters of the system of differential equations, describing the shape of a liquid sessile drop, was used.

Synthesis of Porous Heat-Insulating Material from Industrial Waste

2018 ◽  
Vol 284 ◽  
pp. 82-89
Author(s):  
Liudmila Shtirc ◽  
Svetlana G. Vlasova ◽  
K. Zemlyanoi
Keyword(s):  
Surface Tension ◽  
Industrial Waste ◽  
Sessile Drop ◽  
Foam Glass ◽  
Temperature Drop ◽  
Sessile Drop Method ◽  
Insulating Material ◽  
Stable Temperature ◽  
Crystallization Ability ◽  
Glass Compositions

We chose two glass compositions suitable for the synthesis of foam glass. The influence of additive at the amorphous silica charge in the amount of 20% and 100%, a by-product in the leaching of serpentinite, was studied. By the method of stable temperature drop, the crystallization ability of the welded glass compositions was studied. The surface tension was measured by the sessile drop method.

Surface tension of molten silicon measured by microgravity oscillating drop method and improved sessile drop method

2006 ◽  
Vol 54 (5) ◽  
pp. 1221-1225 ◽  
Author(s):  
Hidetoshi Fujii ◽  
Taihei Matsumoto ◽  
Shun Izutani ◽  
Shoji Kiguchi ◽  
Kiyoshi Nogi
Keyword(s):  
Surface Tension ◽  
Sessile Drop ◽  
Sessile Drop Method ◽  
Molten Silicon ◽  
Drop Method

Wettability, Surface Tension and Work of Adhesion of Cu-Ti Alloys on Yttria Partially-Stabilized Zirconia at 1273K

2014 ◽  
Vol 941-944 ◽  
pp. 102-107 ◽  
Author(s):  
Wei Ji Mao ◽  
Hiroki Sannomiya ◽  
Nobuya Shinozaki ◽  
Toshifumi Ogawa
Keyword(s):  
Surface Tension ◽  
Sessile Drop ◽  
Titanium Content ◽  
Contact Angles ◽  
Sessile Drop Method ◽  
Work Of Adhesion ◽  
Stabilized Zirconia ◽  
Partially Stabilized Zirconia ◽  
Ti Alloys ◽  
Yttria Partially Stabilized Zirconia

The wetting behavior of molten Cu-Ti alloys with titanium content of 10mass%, 20mass% and 30mass% on the Yttria Partially-Stabilized Zirconia (Y-PSZ) substrates was investigated at 1273K using the sessile drop method. The wettability improved with increasing the titanium content of the alloy. The stabilized contact angles of Cu-10mass%Ti, Cu-20mass%Ti and Cu-30mass%Ti alloys on the Y-PSZ substrate were measured to be 69°, 47°and 30°, respectively. The surface tension of the molten Cu-Ti alloys and the work of adhesion of alloy/substrate interface increased with increasing the titanium content. A larger work of adhesion attributes to firmer bonding between the molten Cu-Ti alloy and the Y-PSZ substrate, and can greatly improve the wettability.

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