MICROSCOPIC ANALYSIS OF LANTHANUM STRONTIUM MANGANITE YTTRIA-STABILIZED ZIRCONIA INTERFACE

Interfacial reaction between yttria-stabilized zirconia (YSZ) and La0. 6Sr0.4MnO3 (LSM) phases was analyzed by X-ray diffraction and high-res olution transmission electron microscopy. The interface was basically constructed by binding of well-crystallized grains even in the vicinit y of the interface. The interfacial reaction was observed typically fo r the sample heated at 1500 degrees C. Amorphous regions were partiall y formed by solid-state reaction between LSM and YSZ particles. Some s mall crystallites which had lattice orientation different from neighbo uring LSM and YSZ particles near the amorphous phase were observed, an d were attributed to lanthanum-zirconate and strontium-zirconate phase s.