Spreading of Viscous Liquids at High Temperature: Silicate Glasses on Molybdenum

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• 作者：Sonia Lopez-Esteban ; Eduardo Saiz ; José ; S. Moya ; and Antoni P. Tomsia
• 刊名：Langmuir
• 出版年：2005
• 出版时间：March 15, 2005
• 年：2005
• 卷：21
• 期：6
• 页码：2438 - 2446
• 全文大小：377K
• 年卷期：v.21,no.6(March 15, 2005)
• ISSN：1520-5827

文摘

The spreading of Si-Ca-Al-Ti-O glasses on molybdenum has been investigated. By controlling theoxygen activity in the furnace, spreading can take place under reactive or nonreactive conditions. As thenucleation of the reaction product under reactive conditions is slow in comparison to the spreading kinetics,in both cases the glass front moves on the metal surface with similar spreading velocities. Spreading canbe described using a molecular dynamics model where the main contribution to the wetting activationenergy comes from the viscous interactions in the liquid. Enhanced interfacial diffusions in low-oxygenactivities (reactive cases) form triple-line ridges that can pin the wetting front and cause a stick-slipmotion.