Use of Exothermic Effect at Interface in Wetting, Production of Composites, and Soldering of Ceramic Materials

Abstract

Wettability of some nonmetals with a nickel coating deposited on them using molten aluminum in vacuum at temperature 700 °C is studied. Sessile drop and capillary purification methods were used. Threshold thickness of wetting for the majority of materials made 150 nm, and for basalt 400 nm. The high degree of wetting is observed. It is explained that metal melt wets better metal coating than nonmetal materials with a coating; exothermic reaction with formation of aluminum nitrides takes place in the system as well.