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Liquid Skin Elasticity Adsorption and Thermal Excitation

3 Liquid Skin Elasticity Adsorption and Thermal Excitation [Pg.477]

The surface tension for a liquid takes on an important part in the formation of liquid drop, bubble, or gas bubble in a liquid. Compared with the solid skin premelting, a liquid surface tends to solidify at temperatures below the bulk melting point. Normally, the temperature dependence of the surface tension of a molten substance follows a linear relation to the temperature of testing [49-54]  [Pg.477]

A huge database has been established regarding the temperature coefficient of siuface tension for metals, alloys, and polymers. Tables 24.1a and 24.1b tabulate the data for some typical samples and includes information derived and discussed later in Sect. 24.4.2. The temperature dependence of surface tension provided an opportunity for one to derive information regarding atomic cohesive energy in the bulk and with possible mechanism for the adsorbate-induced surface stress. The latter could be a challenging topic of research on adsorption of various adsorbates to liquid surfaces of relatively low-Tn, metals. [Pg.478]

The bond energy b(0) is available by dividing the atomic cohesive energy b(0) with bulk coordination Zb (=12) for elemental specimen. 0d and are the Debye temperature and melting point as input in calculations. AT(K) is the temperature range of testing. Scattered data for a specific substance and the deviation from the reference values show the sensitivity of the LBA-derived b(0) to the extrinsic factors such as surface contamination in comparison with the reference data [Pg.479]




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