Synthesis and properties of aluminum-yttrium-zirconium oxides

Journal Article · Thu May 01 04:00:00 EDT 1986 · Inorg. Mater. (Engl. Transl.); (United States)

OSTI ID:6968871

Kalabokhova, S V; Krasulin, Y L; Shoitova, A V; Tumanov, V A

The oxides of aluminum and zirconium are widely used as refractories. To improve the reliability of these materials, metal additives are introduced and a special structure is created. The change of specific surface and pycnometric density during the heat treatment of the tiple hydroxides of aluminum, zirconium, and yttrium are shown and the microstructure of a ceramic produced by hot pressing a mixture of Al/sub 2/O/sub 3/ + ZrO/sub 2/ + Y/sub 2/O/sub 3/ is given. It is shown that introduction of 5-10 wt.% Mo and MoSi/sub 2/ additive increases the room-temperature strength of the material (ceramic). With increase of temperature, the degree of weakening is higher, and this is more pronounced above 800-1000 C.

• OSTI ID: 6968871
• Journal Information: Inorg. Mater. (Engl. Transl.); (United States), Journal Name: Inorg. Mater. (Engl. Transl.); (United States) Vol. 21:12; ISSN INOMA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DIFFERENTIAL THERMAL ANALYSIS
DIFFRACTION
ELEMENTS
HEAT TREATMENTS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
METALS
MICROSTRUCTURE
MOLYBDENUM
MOLYBDENUM COMPOUNDS
MOLYBDENUM SILICIDES
MONOCLINIC LATTICES
OXIDES
OXYGEN COMPOUNDS
REFRACTORIES
REFRACTORY METAL COMPOUNDS
SCATTERING
SILICIDES
SILICON COMPOUNDS
TEMPERATURE EFFECTS
THERMAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES