Effect of Y/sub 2/O/sub 3/ and Nd/sub 2/O/sub 3/ doping on the structure and stability of ZrO/sub 2/-based phases in alloys of the system Al/sub 2/O/sub 3/-ZrO/sub 2/

Journal Article · Sun Nov 01 00:00:00 EST 1987 · Inorg. Mater. (Engl. Transl.); (United States)

OSTI ID:5311846

Gladkov, V E; Fotiev, A A; Ivashinnikov, V T; Viktorov, V V

Additions of 12 mass % Y/sub 2/O/sub 3/ or 30 mass % yttrium concentrate (with respect to ZrO/sub 2/) to the charge with the composition 75 mass % Al/sub 2/O/sub 3/ + 25 mass % ZrO/sub 2/ make it possible to obtain stabilized ZrO/sub 2/ in samples obtained by melting. When 30 mass % Nd/sub 2/O/sub 3/ is introduced 60% stabilized ZrO/sub 2/ is formed. The stabilized phase has the ..beta..-ZrO/sub 2/ structure with additions of not more than 12 mass % Y/sub 2/O/sub 3/, and the structure characteristic for ..gamma..-ZrO/sub 2/(F) with 15 mass % Y/sub 2/O/sub 3/. In the case of 10-30 mass % Nd/sub 2/O/sub 3/ or 15-30 mass % yttrium concentrate the stabilized ZrO/sub 2/ is a mixture of the disordered solid solution with a structure close to that of ..gamma..-ZrO/sub 2/(F) and an ordered solid solution with the structure of pyrochlore ..gamma..-ZrO/sub 2/(P).

• OSTI ID: 5311846
• Journal Information: Inorg. Mater. (Engl. Transl.); (United States), Vol. 23:6; Other Information: Translated from Izv. Akad. Nauk. SSSR, Neorg. Mater.; 23: No. 6, 955-957(Jun 1987)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
CRYSTAL DOPING
CRYSTAL STRUCTURE
NEODYMIUM OXIDES
METALLURGICAL EFFECTS
YTTRIUM OXIDES
ZIRCONIUM OXIDES
ANNEALING
DOPED MATERIALS
ORDER PARAMETERS
PHASE STUDIES
SOLID SOLUTIONS
TEMPERATURE EFFECTS
ALUMINIUM COMPOUNDS
CHALCOGENIDES
DISPERSIONS
HEAT TREATMENTS
MATERIALS
MIXTURES
NEODYMIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
SOLUTIONS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies