Influence of composition of sodium aluminoborosilicate melts containing nickel and calcium oxides on the wetting angle on platinum |
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Authors: | L A Noskov N T Shardakov V Ya Kudyakov V B Vasnetsova and A A Potemkin |
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Affiliation: | (1) Institute of HighTemperature Electrochemistry, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 20, 620219 Yekaterinburg, Russia |
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Abstract: | The influence of the composition of sodium aluminoborosilicate melts containing nickel and calcium oxides on the wetting angle
on platinum has been studied by the method of “small drop on thin thread.” It is shown that partial mutual replacement of
silicon, aluminum, and boron oxides (up to 4 mol %) does not substantially change the wetting angle. The wetting angle increases
after the partial replacement of these oxides by calcium oxide and decreases after their replacement by nickel oxide. Since
a change in the surface tension of melts in the composition range studied is insignificant, the work of adhesion and the “glass
melt-metallic substrate” interfacial tension are determined by the wetting angle. The maximum work of adhesion and the minimum
interfacial tension are characteristic of melts with an increased nickel oxide content, and the minimum work of adhesion and
the maximum interfacial tension are observed for melts with an increased calcium oxide content.
Deceased. |
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