Rapid Solidification Processing by Combining Levitation Furnace and Splat Quenching

Abstract

Containerless processing, which can control the undercooling level of the droplet, is now widely used to form the metastable phase from the highly undercooled melt. However, the metastable phase obtained often remelts due to the latent heat ejected from the stable phase when the stable phase nucleates on the metastable phase. On the other hand, splat quenching, which can reduce the reheat of the system because the latent heat is extracted into the substrate, had been limited to the quenching of the superheated melt. The combination of levitation furnace and splat quenching provides the effective cooling because the undercooled melt can be quenched. In this review, we focus on the direct growth of the peritectic phase from the undercooled melt by this combination.