FORMING SINGLE-PHASE LAMINATES VIA THE GELCASTING TECHNIQUE

Single-phase laminates of iron titanate were formed by gel-casting in both the presence and absence of a magnetic field to produce alternati ng layers of textured and nontextured microstructure, respectively. X- ray analysis was performed on each lamina verifying that alignment was maintained throughout processing. Tunnel cracks were found in trilaye r laminates (nontextured/textured/nontextured) when the alignment dire ction was parallel to the interface between layers. The cracks are con sistent with a stress profile of residual tension parallel to the inte rface in the textured layer.