Effects of interphase boundary anisotropy on the three-phase growth dynamics in the β(In) – In2Bi – γ(Sn) ternary-eutectic system

This article reports on low (below 800 °C) melting temperature characteristics of a Zr-Ti-Ni-Cu alloy system, designed by adding a small amount of Cu to a Zr-Ti-Ni eutectic alloy system in the Zr-rich corner of the Zr-Ti-Ni system. A series of Zr-Ti-Ni-Cu-based alloy buttons of varying Cu content was fabricated by an arc melting machine. The melting temperature ranges of the quaternary alloys were systematically examined by differential thermal analysis (DTA). As a result, a quaternary eutectic alloy of composition Zr54Ti22Ni16Cu8 with a low melting temperature range from 774 °C to 783 °C was found. In addition, structural and chemical analysis results for the slowly solidified, quaternary eutectic alloy sample revealed equivalent quaternary eutectic structure and phases to those of the ternary eutectic Zr50Ti26Ni24 alloy, except for a small amount of Cu dissolved in individual constituent phases. The wetting angle tested at 800 °C for 60 s on the commercially pure titanium was about 25°.

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The Quasi Ternary Eutectic System Polyethylene/Hexamethylbenzene/Adamantane

British Polymer Journal ◽

10.1002/pi.4980120416 ◽

1980 ◽

Vol 12 (4) ◽

pp. 215-220 ◽

Cited By ~ 8

Author(s):

Paul Smith ◽

Ronald Koningsveld ◽

Chretien J. H. Schouteten ◽

Albert J. Pennings

Keyword(s):

Ternary Eutectic ◽

Eutectic System

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MODELLING AND INVESTIGATION OF THE DEPENDENCE OF SUPERHYDROPHOBIC PROPERTIES OF NANOSURFACES ON THE TOPOLOGY OF MICROCHANNELS

Environment Technology Resources Proceedings of the International Scientific and Practical Conference ◽

10.17770/etr2019vol3.4171 ◽

2019 ◽

Vol 3 ◽

pp. 52

Author(s):

Sharif E. Guseynov ◽

Jekaterina V. Aleksejeva

Keyword(s):

Contact Angle ◽

Interphase Boundary ◽

Slip Length ◽

Superhydrophobic Surfaces ◽

Equilibrium Contact Angle ◽

Three Phase ◽

Quantitative Understanding ◽

Air Cushion ◽

Local Slip ◽

Solid Liquid

In the Cassie-Baxter state anisotropic superhydrophobic surfaces have high lubricating properties. Such superhydrophobic surfaces are used in medical implants, aircraft industry, vortex bioreactors etc. In spite of the fact that quantitative understanding of fluid dynamics on anisotropic superhydrophobic surfaces has been broadened substantially for last several years, there still are some unsolved problems in this field. This work investigates dynamics of a liquid on unidirectional superhydrophobic surfaces in the Cassie-Baxter state, when surface texture is filled with gas and, consequently, the liquid virtually is located on some kind of an air cushion. Energy of the interphase boundary liquid-gas is much smaller than energy of the interphase boundary solid-liquid, that is why the contact angle at wetting such surfaces differs a lot from the Young contact angle and depends on contact area ratio of liquid-gas and liquid-solid in visible contact of liquid and surface. Considering difference in energy obtained if we slightly shift the three-phase contact line, expression for macroscopic equilibrium contact angle, which describes the Cassie-Baxter state, can be deduced. In the work the design formula for computing local-slip length profiles of liquid on the considered superhydrophobic surfaces is obtained.

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