High-temperature thermodynamic functions for zirconium and unsaturated zirconium hydrides

Douglas, Thomas B.

doi:10.6028/jres.067a.043

Cited by 22 publications

(1 citation statement)

References 23 publications

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“…Gamma phase hydrides ( -ZrH) have been reported to be metastable [27], like martensite in steels, in spite of evidence showing that the 'amount of gamma in solid samples is difficult to alter' [28]. Douglas [29] was the first to suggest that the gamma phase is stable by presenting Gulbransens' experimental data [23] on the phase diagram. More recently, claims of a stable gamma hydride have been made [30] and the gamma phase boundary has been included in some phase diagrams [31] [32] [20].…”

Section: Gamma ( -Zrh)mentioning

confidence: 99%

Mapping the Zirconium-Hydrogen Phase System

Corrigall¹

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There are economic incentives to extend service of CANDU nuclear reactors in Ontario because of their reputation for safety and reliability. Pressure tubes made of zirconium alloys are vulnerable to failure by Delayed Hydride Cracking (DHC), which limits the amount of hydrogen, stress, temperature, and service life. Recreating reactor end-of-life conditions for testing purposes requires a method of adding hydrogen quantitatively into zirconium alloys without modifying irradiation damage.The thesis demonstrates a promising mechanical hydriding technique that is suitable for adding hydrogen beyond the conventional solubility limit into zirconium alloys at 200 °C within hours, with 99 % accuracy and 3 % precision based on massbalance. The technique can be used to map the Zirconium-Hydride phase system. Results attributed to the delta ( -ZrHx) solvus have been measured and agree with reported values. Confidence in the model is reinforced by the determination of hydrogen solubility in a copper barrier, which was found to agree with theoretical predictions. 5.2.

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Section: Gamma ( -Zrh)mentioning

confidence: 99%

et al. 1982

Thermophysical Properties Research Literature Retrieval Guide 1900–1980

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High-temperature thermodynamic functions for zirconium and unsaturated zirconium hydrides

Abstract: FIGU RE 1. Phase diagTam (partial) of the zirconi1l1n-hycl1'ogen system.

Cited by 22 publications

References 23 publications

Mapping the Zirconium-Hydrogen Phase System

Mapping the Zirconium-Hydrogen Phase System

H-Zr (Hydrogen-Zirconium)

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