Calorimetric determination of the δ hydride dissolution enthalpy in ZIRCALOY-4
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, ISSN: 1073-5623, Vol: 35 A, Issue: 8, Page: 2343-2349
2004
- 7Citations
- 11Captures
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Article Description
In this work, the dissolution enthalpy, ΔH, of the δ hydride phase in the αZr matrix in ZIRCALOY-4 has been determined with a differential scanning calorimeter (DSC) in two different ways: by means of a van't Hoff equation, measuring the terminal solubility temperature in dissolution, TSSd, and by direct measurement of the dissolution heat, Q, as the area between the base line and the calorimetric curve. The application of the DSC technique to the hydride dissolution heat measurements, a transformation which covers an extended temperature range, is completely original and requires a special treatment of the calorimetric curve. These measurements were done on samples that practically cover the entire solubility range of hydrogen in αZr phase (80 to 640 ppm). The values obtained, 36.9 and 39.3 kJ/mol H, respectively, are self-consistent and in good agreement with the values of the more recent revisions, but reduces considerably the scatter of the literature data.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=4644360266&origin=inward; http://dx.doi.org/10.1007/s11661-006-0214-8; https://link.springer.com/10.1007/s11661-006-0214-8; https://dx.doi.org/10.1007/s11661-006-0214-8; https://link.springer.com/article/10.1007/s11661-006-0214-8; http://www.springerlink.com/index/10.1007/s11661-006-0214-8; http://www.springerlink.com/index/pdf/10.1007/s11661-006-0214-8
Springer Science and Business Media LLC
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