Interface interaction and wetting in the Y2O3/(Al–Cu–Y) system

Yttria and yttria-based ceramics are stable materials in contact with metallic melts and may be used as structural materials for crucibles. Wetting phenomena in the metal/ceramic systems could indicate crucible materials performance. In this study, the wetting behavior and metal–oxide interface interactions in the Y2O3/(Al–Cu–Y) system were investigated at 1423 K. It was established that the amount of the dissolved Y in liquid Al, the amount of the new formed AlYO3 phase and the depth of the crater at the interface are controlled by the melt composition and could be altered by changing components activity in the Al–Cu–Y liquid solution.