Accession Number:

AD0838770

Title:

CONTRIBUTIONS CONCERNING SEPARATION OF RARE EARTHS. IX. THE SYSTEMS TERBIUM OXIDE-YTTRIUM OXIDE AND TERBIUM OXIDE-ERBIUM OXIDE (DIE SYSTEME TERBIUMOXID-YTTRIUMOXID UND TERBIUMOXID-ERBIUMOXID),

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH

Personal Author(s):

• Wolf, L.
• Schwab, H.

Report Date:

1967-09-19

Pagination or Media Count:

19.0

Abstract:

The structural relationship of air-annealed samples of Terbium oxide-Yttrium oxide and Terbium oxide-Erbium oxide systems are discussed. The investigation of crystal structure and lattice dimensions were considered primarily. The analytical investigation of the disposable oxygen is also a principal part of this work. The authors make an attempt to explain the anomaly of the lattice constants of the two systems as a function of the terbium oxide content. The methods of experimental work carried out in this investigation are given. Author

Descriptors:

• (*TERBIUM COMPOUNDS
• CRYSTAL STRUCTURE)
• (*YTTRIUM COMPOUNDS
• X RAY DIFFRACTION)
• RARE EARTH COMPOUNDS
• OXIDES
• PURIFICATION
• REDUCTION(CHEMISTRY)
• CRYSTAL DEFECTS
• CONTROLLED ATMOSPHERES
• EAST GERMANY

Subject Categories:

• Inorganic Chemistry
• Metallurgy and Metallography
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE