FOURTH ANNUAL REPORT ON DISTRIBUTION STUDIES BETWEEN MELTS AND SOLID PHASES USING RADIOACTIVE TRACERS

Technical Report · Sun Jul 31 04:00:00 EDT 1955

OSTI ID:4078314

Ward, R; Orr, W C; Katz, L; Looby, J T; Valletta, R M

Cerium(III) ion in a barium chloride flux does not readily exchangs with any of the ions in solid BaZrO/sub 3/ or BaTiO/sub 3/. It reacts to form new solid phases, which are identified, and does not enter the original crystal lattices at an appreciable rate. The strontium was found to exchange at a measurable rate with barium in BaTiO/sub 3/ and with the corresponding ions in alkaline-earth zirconates. Results of a series of equilibrium and rate measurements were interpreted to ahow that the exchange produces an additional solid phase, SrTiO/sub 3/, rather than the mixed phase, or solid solution, that ndght have been expected. The significance of this observation is discussed. The self-exchange of yttnium ions between a solid compound of yttrium and an alkali chloride flux in which yttrium chloride is dissolved appears in the systems studied to depend primaaily on the solubility of the solid. Exchange is rapid and complete in the case of yttrium oxychlonide, which is soluble to the extent of 0.6%, but is limited to the surface of yttrium chromium oxide, which has no measurable solubility in the flux. The introduction of yttrium ion vacancies in the lattice of yttrium chromium oxide has no detectable effect in promoting exchange. (For preceding period see NYO-3279.) (auth)

• Research Organization: Connecticut. Univ., Storrs
• NSA Number: NSA-15-012902
• OSTI ID: 4078314
• Report Number(s): NYO-6651
• Country of Publication: United States
• Language: English

Related Subjects

BARIUM CHLORIDES
BARIUM COMPOUNDS
CERIUM
CHEMISTRY
CHROMIUM OXIDES
DISTRIBUTION
ION EXCHANGE
IONS
MELTING
RADIOISOTOPES
SOLIDS
STRONTIUM
SURFACES
TITANATES
TITANIUM OXIDES
TRACER TECHNIQUES
USES
YTTRIUM CHLORIDES
YTTRIUM OXIDES