PREPARATION AND CHARACTERIZATION OF CUBIC ZrO2 STABILIZED BY Fe(III) AND Fe(II).

Article abstract of DOI:10.1016/0022-4596(88)90052-7

Samples of cubic ZrO//2 containing 2. 5-40 at% Fe(III) were prepared by codecomposition of the nitrates, X-ray powder diffraction analysis and magnetic measurements indicated that alpha -Fe//2O//3 and ZrO//2 form a solid solution up to 25 at% Fe/Zr in the product. At this point, the solubility limit of a-Fe//2O//3 in ZrO//2 is exceeded. The reduction of cubic zirconia samples containing 2. 5-20 at% Fe(III) leads to the stabilization of iron(II) in the zirconia lattice. Reduction to metallic iron occurs at much higher temperatures than the reduction of bulk a-Fe//2O//3.