Formation and properties of solid solutions of zirconium dioxide with oxides of rare earth elements

Journal Article · Wed May 01 00:00:00 EDT 1963 · Ogneupory (U.S.S.R.) For English translation see Refractories (USSR) (Engl. Transl.)

DOI:https://doi.org/10.1007/BF01370978· OSTI ID:4111245

Keler, E K; Andreev, A B

The results of a study of zirconium dioxide-base materials in the form of solid solutions with CeO₂, Y₂O₃, and La₂O₃ in comparison with the properties of the previously studied solid solution ZrO₂ -- CaO are presented. Pressed samples in the form of pellets were used for chemical and x-ray diffraction studies and rectangular prisms were used for dilatometric investigation. Dielectric loss factor and permeability were determined on samples sintered at 1400-1750° C in a kerosene-fired furnace. Phase composition was based on selective dissolving of the reaction products in boiling hydrochloric acid. X-ray diffraction patterns of 21 samples of various compositions, which were subjected to various sintering temperatures are shown. Graphs are used to show variation of linear dimensions of 17 samples during heating. Molar compositions of the initial mixtures, interplanar spacings of ZrO₂-- CeO₂ solid solutions, and ceramic properties (moisture absorption, specific volume, porosity, compressive strength) of ZrO₂ with other oxides at various roasting temperatures are tabulated, along with elastic properties (shear modulus, modulus of elasticity, Poisson's ratio), electrical and physical properties (porosity, dielectric loss factor and permeability, Mohs hardness, coefficient of thermal expansion from 0° to 1200°C) and the results of chemical phase analysis. The results are discussed in light of production of new, highly refractory materials from solid solutions of ZrO₂ with other oxide components. Special advantages of certain oxide pairs, as well as limitations of cerium-containing compounds as refractory materials, in view of the possibility of reducing CeO₂ to Ce₂O₃, are pointed out.

• Research Organization: Inst. of Silicate Chemistry, Academy of Sciences USSR
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-006822
• OSTI ID: 4111245
• Journal Information: Ogneupory (U.S.S.R.) For English translation see Refractories (USSR) (Engl. Transl.), Vol. Vol: No. 5; Other Information: Orig. Receipt Date: 31-DEC-64
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ABSORPTION
CERIUM OXIDES
DENSITY
DIELECTRICS
DIFFRACTION
ELASTICITY
EXPANSION
HARDNESS
HIGH TEMPERATURE
HUMIDITY
LANTHANUM OXIDES
MEASURED VALUES
MIXING
PELLETS
PHASE DIAGRAMS
POISSON DISTRIBUTION
POROSITY
PRESSURE
QUALITATIVE ANALYSIS
REDUCTION
REFRACTORIES
SAMPLING
SHEAR
SOLID SOLUTIONS
STATISTICS
SUSCEPTIBILITY
TABLES
TENSILE PROPERTIES
USES
VARIATIONS
X RADIATION
YTTRIUM OXIDES
ZIRCONIUM OXIDES