Eutectic Solidification in Ceramic Systems

Microstructure and fracture of anomalous eutectic silicon-disilicide composites

“…Eutectic-based brittle composites have drawn considerable scientific interest due to the unique mechanical and functional properties they display as compared to the monolithic forms of their constituent phases [1,2]. Due to their plurality of phase interfaces that can deflect and bifurcate cracks, eutectic structures can form the basis of in situ composites with toughness values that can rival those of artificially reinforced (and typically powder processed) engineering ceramics [3e6].…”

Structure of interface in directionally solidified oxide eutectic systems

“…In the past decades, directionally solidified eutectics have received considerable attention both as structural materials and for use in electronic devices 1,2 . Because of their high melting points, high strength to weight ratios at high temperatures, and resistance to oxidation, many ceramic eutectics are of interest as potential high temperature structural materials [3][4][5] .…”

A Novel, Layered Phase in Ti‐Rich SrTiO3 Epitaxial Thin Films

“…We observe that the non-equilibrium nature of the growth process results in fi lms that greatly exceed the thermodynamic solubility limit of Ti in SrTiO 3 (≈0.5 mol% of Ti in bulk SrTiO 3 [ 30 ] as compared with ≈130 mol% of Ti in SrTiO 3 in the current study) and the eventual formation of a layered, Tirich phase with nominal chemical formula Sr 2 Ti 7 O 14 . Scanning transmission electron microscopy (STEM)-based studies map out the structure and valence state of this phase, fi rst-principles Self-assembled oxide nanostructures produced, for example, via eutectic phase separation, spinodal decomposition-like routes, and other pathways [1][2][3][4][5][6][7][8] have drawn considerable interest for their varied properties. Such approaches leverage innate chemical and thermodynamic driving forces that favor the spontaneous separation of two phases into an equilibrium state characterized by potentially complex micro-and nanostructures (i.e., layered structures, vertically aligned rods in a matrix, etc.)…”