Abstract
The wetting behaviour of titanium carbide by molten copper has been investigated with the sessile drop method at different oxygen partial pressures and in a range of temperature between its melting point and 1400°C. The experimental results clearly demonstrate that the contact angle values of the Cu TiC system strongly depend on the oxygen partial pressure. The contamination of the surface of titanium carbide by oxygen is believed to be the major cause. Additional experiments have been also performed for silver, germanium and tin at extremely low oxygen partial pressure. The main conclusion that can be deduced from these results is that “pure” titanium carbide without any surface contamination by oxygen could be wetted even by non-reactive metals.
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