Spreading of Viscous Liquids at High Temperature: Silicate Glasseson Molybdenum
The spreading of Si-Ca-Al-Ti-O glasses on molybdenum has been investigated. By controlling the oxygen activity in the furnace, spreading can take place under reactive or non-reactive conditions. As the nucleation 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 can be described using a molecular dynamics model where the main contribution to the wetting activation energy comes from the viscous interactions in the liquid. Enhanced interfacial diffusions in low-oxygen activities (reactive cases) form triple-line ridges that can pin the wetting front and cause a stick-slip motion.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Office of Basic EnergySciences. Materials Sciences and Engineering Division; Spanish Ministryof Education Culture and Sports. University of Minnesota
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 887439
- Report Number(s):
- LBNL-58514; LANGD5; R&D Project: 502401; BnR: KC0201020; TRN: US200618%%185
- Journal Information:
- Langmuir, Vol. 21, Issue 6; Related Information: Journal Publication Date: 03/25/2005; ISSN 0743-7463
- Country of Publication:
- United States
- Language:
- English
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