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Showing 1 to 8 of 8 for “"WETTING ANGLE"”.
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Wettability and hydrophilicity of rigid and soft contact lens surfaces
… technique involved monitoring the receding wetting angle and interface are a diameter of a sessile drop. Contact lens surface preparation and the method of removing a liquid from hydrated surfaces were found to be important variables when determining wettability or hydrophilicity. …
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Pressure infiltration behaviour and properties of aluminium alloy - Oxide ceramic preform composites
… flow initiation characterised by the dynamic wetting angle θdyn and, second, the advancing flow in the preform capillaries. Reactions were detected in the MMC but did not significantly influence the θdyn. Unsaturated fluid flow was evaluated for the subsequent infiltration stage and good …
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Anti wetting additives for aluminosilicate refractories in molten aluminum contact applications
… sulfate, which is widely used as an anti-wetting additive to improve refractory performance by limiting physical contact between molten metal and the refractory, has proved ineffective at temperatures above 1000⁰C. A literature review suggested that barium sulfate formed barium celsian at …
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Microstructural evolution of silicate immiscible liquids in solidifying ferrobasalts
… around growing crystals. The equilibrium wetting angle of Fe-rich droplets on both plagioclase and magnetite increases with decreasing temperature. Droplet coarsening occurs by diffusion-controlled growth (including Ostwald ripening), with an insignificant contribution from coalescence. …
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Synthesis of III-V nitride nanowires with controlled structure, morphology, and composition
… contributions of seed particle volume, wetting angle, and three-dimensional morphology to the observed diameter changes. To achieve large diameter ratios using liquid seed particles, significant changes in both seed particle volume and wetting angle are necessary. Furthermore, the model …
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Development of new high entropy alloys for brazing of Ni-base superalloys
… Only a 10 °C discrepancy was identified. Through wetting angle tests at various temperatures, the optimum brazing temperature for this HEA was determined to be 1200 °C. The as-cast HEA button was cold rolled into foils with different thickness ranging from 50 to 300 µm for brazing tests. The …
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Smáčení a roztékání roztavené pájky po kovovém povrchu
Předkládaná práce se zabývá problematikou smáčení kovového povrchu roztavenou bezolovnatou pájkou a sledováním dějů probíhajících na mezifázovém rozhraní s použitím metody vyhodnocování výšky roztečené pájky odečítané z videosekvencí. Práce je zaměřena na vyhodnocování smáčivosti kovového povrchu, …
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ΜΕΛΕΤΗ ΤΩΝ ΕΠΙΦΑΝΕΙΑΚΩΝ ΚΑΙ ΔΙΕΠΙΦΑΝΕΙΑΚΩΝ ΙΔΙΟΤΗΤΩΝ ΤΗΣ ΣΤΑΘΕΡΟΠΟΙΗΜΕΝΗΣ ΖΙΡΚΟΝΙΑΣ ΚΑΙ ΣΥΣΤΗΜΑΤΩΝ ΖΙΡΚΟΝΙΑΣ ΣΕ ΕΠΑΦΗ ΜΕ ΡΕΥΣΤΑ ΜΕΤΑΛΛΑ
… TECHNIQUE FOR THE MEASUREMENT OF CONTACT ANGLES, THE SURFACE AND GRAIN-BOUNDARY ENERGIES OF POLYCRYSTALLINE CUBIC ZRO2 IN THE TEMPERATURE RANGE OF 1173 TO 152 B.K. WERE DETERMINED. THE TEMPERATURE COEFFICIENTS OF THE LINEAR TEMPERATURE FUNCTION OBTAINED, ARE EXPRESSED AS DΓSV/DT=-0431X10- …