Wetting of metals and glasses on Mo

Tomsia, A. P.; Saiz, E.; Lopez-Esteban, S.; Benhassine, M.; de Coninck, J.; Rauch, N.; Rühle, M.

doi:10.3139/146.101581

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Wetting of metals and glasses on Mo

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Rauch, N.
Dept. New Materials and Biosystems, Max Planck Institute for Intelligent Systems, Max Planck Society;

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Rühle, M.
Emeriti and Others, Max Planck Institute for Intelligent Systems, Max Planck Society;

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Citation

Tomsia, A. P., Saiz, E., Lopez-Esteban, S., Benhassine, M., de Coninck, J., Rauch, N., et al. (2007). Wetting of metals and glasses on Mo. International Journal of Materials Research, 98(12), 1238-1243. doi:10.3139/146.101581.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-44C3-D

Abstract

The wetting of low melting point metals and Si – Ca – Al – Ti – O glasses on molybdenum has been investigated. The selected metals (Au, Cu, Ag) form a simple eutectic with Mo. Metal spreading occurs under nonreactive conditions without interdiffusion or ridge formation. The metals exhibit low (non-zero) contact angles on Mo but this requires temperatures higher than 1100 °C in reducing atmospheres in order to eliminate a layer of adsorbed impurities on the molybdenum surface. By controlling the oxygen activity in the furnace, glass spreading can take place under reactive or nonreactive conditions. We have found that in the glass/Mo system the contact angle does not decrease under reactive conditions. In all cases, adsorption from the liquid seems to accelerate the diffusivity on the free molybdenum surface.