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Phase Diagram of the System Al2O3-CeO2 at Liquidus Temperature.

N7627363

Publication Date	1976
Personal Author	Mizuno, M.; Berjoan, R.; Coutures, J. P.; Foex, M.
Page Count	20
Abstract	The liquidus curve in the system Al2O3-CeO2 was determined using a heliostat type solar furnace. The cooling curves of melted specimens were obtained in the black body centrifugal cavity with an optical pyrometer. The quenched specimens were examined by powder X-ray techniques and petrographic microscopy. Anomalies in the liquidus curve of the system were found in the regions between 70.0 and 95.0 mol% CeO2. A composition of 90.0 mol% CeO2 was further examined by the high temperature powder X-ray diffractometry, and the presence of a new orthorhombic phase was established. A tentative phase diagram for the Al2O3-CeO2 system at high temperatures is presented. (Author)
Keywords	Aluminum oxides Cerium oxides Phase diagrams Liquidus Cooling Crystal lattices High temperature Optical pyrometers Petrography Solar furnaces X ray diffraction Translations Japan
Source Agency	NASA Translations
NTIS Subject Category	99F - Physical & Theoretical Chemistry 71D - Ceramics, Refractories, & Glass
Corporate Authors	Scientific Translation Service, Santa Barbara, Calif.
Supplemental Notes	Tran-Transl. Into English from J. Ceram. Ass. Jap. (Japan), Vol. 83, No. 2, 1975 p 90-96.
Document Type	Technical Report
NTIS Issue Number	197625
Contract Number	NASW-2791

Phase Diagram of the System Al2O3-CeO2 at Liquidus Temperature.

Phase Diagram of the System Al2O3-CeO2 at Liquidus Temperature.
N7627363

Publication Date	1976
Personal Author	Mizuno, M.; Berjoan, R.; Coutures, J. P.; Foex, M.
Page Count	20
Abstract	The liquidus curve in the system Al2O3-CeO2 was determined using a heliostat type solar furnace. The cooling curves of melted specimens were obtained in the black body centrifugal cavity with an optical pyrometer. The quenched specimens were examined by powder X-ray techniques and petrographic microscopy. Anomalies in the liquidus curve of the system were found in the regions between 70.0 and 95.0 mol% CeO2. A composition of 90.0 mol% CeO2 was further examined by the high temperature powder X-ray diffractometry, and the presence of a new orthorhombic phase was established. A tentative phase diagram for the Al2O3-CeO2 system at high temperatures is presented. (Author)
Keywords	Aluminum oxides Cerium oxides Phase diagrams Liquidus Cooling Crystal lattices High temperature Optical pyrometers Petrography Solar furnaces X ray diffraction Translations Japan
Source Agency	NASA Translations
NTIS Subject Category	99F - Physical & Theoretical Chemistry 71D - Ceramics, Refractories, & Glass
Corporate Authors	Scientific Translation Service, Santa Barbara, Calif.
Supplemental Notes	Tran-Transl. Into English from J. Ceram. Ass. Jap. (Japan), Vol. 83, No. 2, 1975 p 90-96.
Document Type	Technical Report
NTIS Issue Number	197625
Contract Number	NASW-2791