Interdiffusion in the CaF/sub 2/--YF/sub 3/ system
Journal Article
·
· J. Am. Ceram. Soc.; (United States)
An electron microprobe interdiffusion study was made in single crystals between 1200 and 1331/sup 0/C over the solid-solution compositional range 0 to 20 mol percent YF/sub 3/ in CaF/sub 2/. At constant temperature, the value tilde D, the interdiffusion coefficient, increased approximately exponentially with increasing YF/sub 3/ content. As YF/sub 3/ content increased, the temperature dependence of tilde D decreased. Extrapolation of tilde D to 0 percent YF/sub 3/ combined with consideration of the defect formation mechanism at infinite dilution allowed estimation of the impurity diffusion coefficient for Y in essentially pure CaF/sub 2/.
- Research Organization:
- Ames Lab., IA
- OSTI ID:
- 7195553
- Journal Information:
- J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 58:9-10; ISSN JACTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM FLUORIDES
CALCIUM HALIDES
DEFECTS
DIFFUSION
ELECTRON PROBES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
PROBES
SOLUBILITY
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM FLUORIDES
360603* -- Materials-- Properties
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM FLUORIDES
CALCIUM HALIDES
DEFECTS
DIFFUSION
ELECTRON PROBES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
PROBES
SOLUBILITY
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM FLUORIDES