THE REACTION OF ZIRCONIUM-OXYGEN ALLOYS WITH HYDROFLUORIC ACID
Journal Article
·
· Journal of the Electrochemical Society (U.S.) Absorbed Electrochem. Technol.
The volumes of H/sub 2/ evolved by the dissolution of Zr-O mixtures in dilute HF were compared with those calculated. from combustion analysis for O/sub 2/ in these mixtures. The calculations were made on the basis of the assumptions that dissolution in HF prcceeded by the reactions (1) Zr + 4 HF /sub 2/ were ob ZrF/sub 4/ + 2H/sub 2/ for pure Zr and (2) ZrO/sub x/ + 4 HF YY ZrF/sub 4/ + xH/ sub 2/O + (2-x)H/sub 2/ for Zr-O mixtures with composition Zr-xO, and that O/sub 2/ in the mixtures was in the form of Zr0/sub 2/. The results were: Homogeneous Zr-O samples up to 29 at.% O/sub 2/ dissolved completely in 0.3 to 1 N HF, sometimes with the formation of a gray residue, which however was shown to be ZrOF/sub 2/, a hydrolysis product. On the other hand, samples of the two-phase region (with more than 29 at.% O/sub 2/) left some white ZrO/sub 2/ residue, and homogeneous samples did likewise if heated previously to 600 tained C in a H/sub 2/ atmosphere. Samples with O/sub 2/ contents up to 27 at.% were used to check equations (1) and (2); the hydrogen volumes corresponded closely with a small error on the order of 1 to 2%, which was ascribed to absorption of O/sub 2/ as such in the Zr-O mixtures in the combustion analyses. (D.L.C.)
- Research Organization:
- Univ. of Missouri, Rolla
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-14-019461
- OSTI ID:
- 4183192
- Journal Information:
- Journal of the Electrochemical Society (U.S.) Absorbed Electrochem. Technol., Journal Name: Journal of the Electrochemical Society (U.S.) Absorbed Electrochem. Technol. Vol. Vol: 107; ISSN JESOA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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