Accession Number : AD0480252

Title :   SINTERING BEHAVIOR OF STABILIZED ZRO2 COMPOSITIONS.

Descriptive Note : Rept. for Apr 63-Jul 65,

Corporate Author : AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH

Personal Author(s) : Fehrenbacher, L. L. ; Jacobson, L. A. ; Lynch, C. T.

Report Date : DEC 1965

Pagination or Media Count : 20

Abstract : Sintering data for yttria, dysprosia, ytterbia, and calcia-zirconia rich compositions are presented. X-ray diffraction analysis and lattice parameter measurements were used for the identification of various phases and the calculation of their x-ray densities. The completeness of solid-state reaction and the establishment of equilibrium conditions were determined by comparing fired densities to x-ray densities for the fully cubic stabilized ZrO2 solid solutions. For the two-phase, dilute, rare earth oxide samples (1-5 mole %) the degree of densification was estimated by examining microstructure photomicrographs. Comparison of microstructures with fired bulk densities enabled bulk density limits to be established for specific dilute, rare earth oxide-zirconia compositions. (Author)

Descriptors :   (*ZIRCONIUM COMPOUNDS, DIOXIDES), (*REFRACTORY MATERIALS, SINTERING), SOLID SOLUTIONS, HEAT TREATMENT, REACTION KINETICS, RARE EARTH COMPOUNDS, CRYSTAL STRUCTURE, THERMAL STABILITY, GRAIN BOUNDARIES, POROSITY, DENSITY, CHEMICAL BONDS, OXIDES, X RAY DIFFRACTION, CRYSTAL LATTICES, PARTICLE SIZE, MICROSTRUCTURE.

Subject Categories : Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE