Measuring the Contact Angles of Powders by the Sessile Drop Method

2021 ◽  
Vol 12 (3) ◽  
pp. 794-798
Author(s):  
V. E. Danilov ◽  
E. V. Korolev ◽  
A. M. Ayzenshtadt
Keyword(s):  
Sessile Drop ◽  
Contact Angles ◽  
Sessile Drop Method ◽  
Drop Method

A Practical Procedure for Measuring Contact Angles in Wettability Studies by the Sessile Drop Method

MRS Advances ◽  
2019 ◽  
Vol 4 (57-58) ◽  
pp. 3143-3152
Author(s):  
J. López-Cuevas ◽  
M.I. Pech-Canul ◽  
J.L. Rodríguez-Galicia ◽  
J.C. Rendón-Angeles
Keyword(s):  
Liquid Drop ◽  
Sessile Drop ◽  
Reactive Systems ◽  
Soda Lime ◽  
Solid Substrate ◽  
Contact Angles ◽  
Sessile Drop Method ◽  
Soda Lime Glass ◽  
Experimental Conditions ◽  
Drop Method

ABSTRACTAn old procedure used to carry out a graphical derivation of curves, which is based on the optical properties of plane mirrors, has been adapted for the measurement of the contact angle (θ) formed between a liquid drop and a flat solid substrate in wettability experiments carried out by the so-called “sessile drop” method. The method was tested for mercury on soda-lime glass at room temperature in air as well as for Cusil (Ag-28wt.%Cu) and Incusil-ABA (Ag-27wt.%Cu-12wt.%In-2wt.%Ti) brazing alloys on pressureless-sintered silicon carbide (PLS-SiC) at 850 °C, under a vacuum of 10-4/10-5 Torr. The proposed method is fast, simple and accurate enough from high (∼140°) to relatively low (∼10°) contact angles. Although the proposed method has been tested for metal-ceramic systems, it is of general application, so that it would be useful for any liquid-solid system. The method is applicable for any temperature, pressure and atmospheric experimental conditions employed, as well as for any chemical composition of liquid and solid. It is also useful for both low and high contact angles, as well as for reactive and non-reactive systems, as long as a photograph of a liquid drop resting on a flat solid surface is available for the studied system.

Surface Tension Measurement of Liquid Fe-Si-B Alloy by Sessile Drop Method

2013 ◽  
Vol 573 ◽  
pp. 9-12 ◽  
Author(s):  
Kuo Lin Chao ◽  
Shuang Shii Lian ◽  
Chung Yung Wu ◽  
Ku Ling Chang
Keyword(s):  
Surface Tension ◽  
Contact Angle ◽  
Liquid Drop ◽  
Sessile Drop ◽  
Digital Camera ◽  
Contact Angles ◽  
Sessile Drop Method ◽  
Surface Tension Measurement ◽  
Drop Method ◽  
Increasing Temperature

The purpose of this study is to measure contact angle and surface tension of liquid Fe-Si-B alloys at high temperature using sessile drop method. The surface tension and contact angle result is based on sessile drop method by use of a digital camera to take the drop profile and fit the profile by Youngs-Laplace equation. The surface tension of liquid Fe-Si-B alloy and its dependence on temperature has been studied. Contact angles of this liquid alloy on various refractories substrate have been determined using this instrument. The result showed that the contact angles and surface tension of Fe-4Si-3B alloy liquid drop on Al2O3 substrate have value of 134 to 127and 1575-1350 mN/m respectively. The result indicated also that increasing temperature can decrease contact angle and surface tension in Fe-Si-B alloy.

A Sessile Drop Method for Facile and Robust Spheroid Cultures

2021 ◽  
pp. 2100972
Author(s):  
Bangyong Sun ◽  
Yi Zhao ◽  
Qiang Zhao ◽  
Gang Li
Keyword(s):  
Sessile Drop ◽  
Sessile Drop Method ◽  
Drop Method

Use of the Sessile Drop Method to Understand the Behaviour of Self Healing Ceramic Matrix Composite

2008 ◽  
Vol 595-598 ◽  
pp. 1173-1180
Author(s):  
Sébastien Wery ◽  
Francis Teyssandier
Keyword(s):  
Glass Ceramic ◽  
Sessile Drop ◽  
Ceramic Matrix Composite ◽  
Ceramic Matrix ◽  
Sessile Drop Method ◽  
Self Healing ◽  
Infiltration Process ◽  
Drop Method ◽  
Sic Composites ◽  
Sealing Glass

Surface and interfacial properties of borosilicate glass/ceramic systems have been investigated using the sessile drop method. The purpose is to compare and understand the reactivity of the sealing glass in C / SiC and SiC / SiC composites. A hot wall reactor has been designed to measure the variation of the contact angle and the spreading kinetic according to the temperature (500 to 1100°C) and the atmosphere (Ar, Ar + O2 and Ar + H2O). Chemical and morphological analyses underline (i) the strong reactivity between the liquid and the ceramic, (ii) the influence of the infiltration process and (iii) the strong influence of the oxidizing agent on the wetting behaviour of the glass/ceramic systems.

Wettability Study of Red Ceramic and Glaze from Dimension Stone Waste

2017 ◽  
Vol 899 ◽  
pp. 289-294
Author(s):  
Maria Vitória Machado Rosetti ◽  
R.A. Carvalho ◽  
S.P. Taguchi ◽  
L.A. Borges
Keyword(s):  
Contact Angle ◽  
Melting Point ◽  
Optical Microscopy ◽  
Sessile Drop ◽  
Longitudinal Section ◽  
Sessile Drop Method ◽  
Ceramic Plate ◽  
Dimension Stone ◽  
Drop Method ◽  
Stone Industry

The dimension stone industry produces large amount of residue. An alternative to reduce this environmental liability is to apply as glaze in coating ceramic. This research is about the wettability between glaze and red ceramic, applying the sessile drop method. The waste and additives were mixed, pressed, and put over red ceramic plate previously sintered. The system was heated until the melting point of the glaze and the contact angle decreasing was measured in function of the temperature, and in a function of the time at 750 °C and 800 °C. The minimum contact angle value was near 6 ° at 994 °C in the testing changing the temperature, and presents 19 ° and 10 °, respectively, at 750 °C and 800 °C, when the time was varied. The longitudinal section of the samples was analyzed using optical microscopy, showing physical wettability in all testing. This glaze presents good wettability on red ceramic with potential as coating ceramic.

scholarly journals Influence of Experimental Variables on the Measure of Contact Angle in Metals Using the Sessile Drop Method

2015 ◽  
Vol 8 ◽  
pp. 742-751 ◽  
Author(s):  
Jonathan M. Schuster ◽  
Carlos E. Schvezov ◽  
Mario R. Rosenberger
Keyword(s):  
Contact Angle ◽  
Sessile Drop ◽  
Sessile Drop Method ◽  
Drop Method
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