Wettability of titanium monoxide surface

The wetting angles of various metals and their alloys were determined by high temperature sessile drop method. The results indicate that the wettability of Cu, Fe, Co, Ni and Fe-Cr alloy on TiO surface is not good, and the contact angles are 48°~120° at melting point temperature; Cu on TiO surface is non-reaction wetting, and the others are reaction wetting. But the wettability can be improved by adding some surfactant. The wettability of Cu on TiO surface can be improved effectively by adding more than 2%Mo_2C, and at the same time the non-reaction wetting is changed into reaction wetting. The wettability of Fe-Cr alloy on TiO surface can be improved markedly by adding more than 1.5%Mn or 1.5%Si; the wetting type is not changed by adding Mn, but the reaction wetting is changed into non-reaction wetting by adding Si.