TITLE

Reactive Wetting of SiO2 Substrates by Molten Al

AUTHOR(S)
Ping Shen; Fujii, Hidetoshi; Matsumoto, Taihei; Nogi, Kiyoshi
PUB. DATE
February 2004
SOURCE
Metallurgical & Materials Transactions. Part A;Feb2004, Vol. 35 Issue 2, p583
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The reactive wetting behavior of SiO2 substrates by molten Al was investigated at temperatures between 800°C to 1250°C in a purified Ar-3 pct H2 atmosphere of about 0.11 MPa using an improved sessile drop method. The time dependence of the changes in contact angle and droplet geometry was monitored and the wetting kinetics was identified. The initial equilibrium or quasi-equilibrium contact angles are generally larger than 90 deg and do not significantly vary with temperature. The subsequent remarkable decrease in the contact angle mainly results from the progressive decrease in the droplet volume rather than the advance of the solid-liquid interfacial front. The significant effect of temperature on the wetting kinetics is essentially related to its effect on the reaction and molten Al penetration progress. For systems with a considerable decrease in the droplet volume during reactive wetting, a criterion for evaluation of the true wetting improvement was proposed.
ACCESSION #
13012846

 

Related Articles

  • Study on Wettability of Aluminum Alloy Superhydrophobic Surface. Ruomei Wu; Zhaofei Sun; Guanghua Chao; Haiyun Jiang; LIN Wan Tsang // Advanced Materials Research;2014, Vol. 1081, p192 

    Wettability is interfacial phenomena by a solid interface changes from solid-gas interface to solid-liquid interface, and the contact angle is often used to characterize it. The super hydrophobic surfaces with contact angle over 150° have various excellent characteristics. In the paper, the...

  • Role of wetting and nanoscale roughness on thermal conductance at liquid-solid interface. Wang, Y.; Keblinski, P. // Applied Physics Letters;8/15/2011, Vol. 99 Issue 7, p073112 

    Using non-equilibrium molecular dynamics simulations in which a temperature gradient is imposed, we determine the thermal resistance of a model liquid-solid interface with and without nanoscale roughness. Our simulations reveal that in both cases the key factor controlling interfacial thermal...

  • Forced wetting and hydrodynamic assist. Blake, Terence D.; Fernandez-Toledano, Juan-Carlos; Doyen, Guillaume; De Coninck, Joël // Physics of Fluids;2015, Vol. 27 Issue 11, p1 

    Wetting is a prerequisite for coating a uniform layer of liquid onto a solid. Wetting failure and air entrainment set the ultimate limit to coating speed. It is well known in the coating art that this limit can be postponed by manipulating the coating flow to generate what has been termed...

  • Wetting and drying at a solid–fluid interface. Velasco, E.; Tarazona, P. // Journal of Chemical Physics;12/15/1989, Vol. 91 Issue 12, p7916 

    We have studied the wetting and drying transitions in a solid–fluid interace with truncated Lennard-Jones interactions, for which there have been reported molecular dynamics results by Sikkenk et al. [Phys. Rev. Lett. 59, 98 (1987)]. We consider in detail the differences resulting from...

  • Effect of presence of salt on the dynamics of water in uncharged nanochannels. Bakli, Chirodeep; Chakraborty, Suman // Journal of Chemical Physics;2/7/2013, Vol. 138 Issue 5, p054504 

    Energy conversion and generation mechanisms at nano-scales often include tapping power from pressure-driven flow of water containing dissolved salts in nanofluidic channels. The deviation of such flows from continuum behaviour can often be advantageously utilized to enhance the energy conversion...

  • Structure and dynamics at the aluminum solid-liquid interface: An ab initio simulation. Jesson, Ben J.; Madden, Paul A. // Journal of Chemical Physics;10/8/2000, Vol. 113 Issue 14 

    The interface between the [001] face of crystalline aluminum and the coexisting liquid has been studied in an ab initio molecular dynamics simulation using the orbital-free density functional description of the electronic structure. Direct observation of the equilibrium condition gives a melting...

  • Molecular dynamics study of the solid-liquid interface. Geysermans, P.; Gorse, D.; Pontikis, V. // Journal of Chemical Physics;10/15/2000, Vol. 113 Issue 15 

    The atomic structure and diffusion at the solid-liquid heterophase interface are investigated by using Molecular Dynamics. The system studied is made of crystalline copper with surface terminations (100) and (111) and liquid aluminum, both modeled via adapted n-body potentials from the...

  • Analysis on wetting and local dynamic properties of single water droplet on a polarized solid surface: A molecular dynamics study. Surblys, D.; Yamaguchi, Y.; Kuroda, K.; Nakajima, T.; Fujimura, H. // Journal of Chemical Physics;7/7/2011, Vol. 135 Issue 1, p014703 

    Molecular dynamics simulations of single water droplets on a solid surface were carried out in order to investigate the effects that the Coulomb interaction between liquid and solid molecules has on wetting behavior by appending vertical electric polarization on a solid surface. The water...

  • Lennard-Jones systems near solid walls: Computing interfacial free energies from molecular simulation methods. Benjamin, Ronald; Horbach, Jürgen // Journal of Chemical Physics;Aug2013, Vol. 139 Issue 8, p084705 

    Different computational techniques in combination with molecular dynamics computer simulation are used to determine the wall-liquid and the wall-crystal interfacial free energies of a modified Lennard-Jones (LJ) system in contact with a solid wall. Two different kinds of solid walls are...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics