P. Kritsalis, L. Coudurier, C. Parayre, N. Eustathopoulos
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引用次数: 6
Abstract
The influence of additions of chromium, titanium and CuCr on the wettability of vitreous carbon by NiPd azeotropic alloys was studied. The work was carried out at 1523 K under high vacuum by the sessile drop technique. The morphological and chemical features of the metal-carbon interface were determined by profilometry, scanning electron microscopy and microprobe analysis. Chromium and titanium active solutes lead to a decrease of more than 100° in contact angle and an order of magnitude increase in work of adhesion. These effects result from the in situ modification of both the liquid and solid sides of the interface: the formation of an adsorption layer rich in active solute on the liquid side and a metallic-like carbide on the solid side of the interface.
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