Hydrogen Permeation through Iron, Nickel, and Heat Resisting Alloys at Elevated Temperatures

Masui, Kanji; Yoshida, Heitaro; Watanabe, Yoji

doi:10.2355/tetsutohagane1955.64.5_615

Cited by 6 publications

(9 citation statements)

References 4 publications

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“…These results are consistent with the observation that hydrogen permeability of alloys generally increases with increasing nickel content, although the correlation is not a sensitive one. 3,14 Figure 13. Hydrogen permeability of Inconel 617 compared with the Incoloy 800H data from this work and the two sets of published data.…”

Section: Measurement Resultsmentioning

confidence: 99%

“…The flux of permeated hydrogen, J H2 (in units of cm 3 (STP)/cm·s·atm 1/2 ), across the sample wall was calculated from the hydrogen permeation flow rate, ܸ ሶ ுଶ , normalized for the heated surface area (tube circumference and heated length, L) by Equation 2 above, and more explicitly by…”

Section: Measurement Resultsmentioning

confidence: 99%

“…The data collected in the permeability tests of the three alloys are summarized in Tables A-1, B-1, and C-1 of Appendices A, B, and C. The hydrogen permeation flux and the permeability were calculated from the raw data using the following relationships. The hydrogen permeation flow rate through the wall of the sample, ܸ ሶ ுଶ (in units of cm 3 (STP)/sec), was calculated from the helium flow rate in the secondary loop, ܸ ሶ ு , and the hydrogen concentration in the secondary loop at permeation equilibrium, C tot , corrected for the hydrogen system background concentration, C bg , with conversion from concentration units of ppm to volume fraction as…”

Section: Measurement Resultsmentioning

confidence: 99%

“…Of the three candidate high-nickel alloys, only Incoloy 800/800H has been significantly tested for permeation, with several reports in the literature. 2,3,4,5,6,7,8,9,10 By comparison, only two groups have reported hydrogen permeability data for Inconel 617 and none for Haynes 230. 5,7 (Of the three alloys, tritium permeation has been reported only for Incoloy 800/800H, and only by two groups.…”

Section: Introductionmentioning

confidence: 99%

“…5,12,13 ) The accessible literature data for the permeation of hydrogen through Incoloy 800/800H are shown graphically in Arrhenius format in Figure 2. The activation energy for hydrogen permeation, Q (in units of kcal/mol), and the permeability constant, K 0 (in units of cm 3 [standard temperature and pressure (STP; 0°C, 1 atmosphere)] hydrogen/cm·sec·atm 1/2 ) are given in Table 1 for Incoloy 800/800H and Inconel 617, along with the applicable temperature and pressure ranges for the literature data. No permeability data for Haynes 230 have been found.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen Permeability of Incoloy 800H, Inconel 617, and Haynes 230 Alloys

Calderoni¹

2010

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A potential issue in the design of the Next Generation Nuclear Plant (NGNP) reactor and its high-temperature components is the permeation of fission generated tritium and hydrogen product from downstream hydrogen generation through high-temperature components. Such permeation can result in the loss of fission-generated tritium to the environment and the potential contamination of the helium coolant by permeation of product hydrogen into the coolant system. This issue will be addressed in the engineering design phase, and requires knowledge of permeation characteristics of the candidate alloys. Of the three potential candidates for high-temperature components of the NGNP reactor design, only hydrogen permeability for Incoloy 800H has been well documented, but at relatively high partial pressures of hydrogen. Hydrogen permeability data have been published for Inconel 617, but only in two literature reports and for partial pressures of hydrogen greater than one atmosphere, far higher than anticipated in the NGNP reactor. The hydrogen permeability of Haynes 230 has not been published.To support engineering design of the NGNP reactor components, the hydrogen permeability of Inconel 617 and Haynes 230 were determined using a measurement system designed and fabricated at Idaho National Laboratory. The performance of the system was validated using Incoloy 800H as reference material, for which the permeability has been published in several journal articles. The permeability of Incoloy 800H, Inconel 617, and Haynes 230 was measured in the temperature range 650 to 950°C and at hydrogen partial pressures of 10 -3 and 10 -2 atm-substantially lower pressures than used in the published reports. The measured hydrogen permeability of Incoloy 800H and Inconel 617 were in good agreement with published values obtained at higher partial pressures of hydrogen. The hydrogen permeability of Inconel 617 and Haynes 230 were similar, about 50% greater than for Incoloy 800H and with similar temperature dependence.

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Section: Measurement Resultsmentioning

confidence: 99%

Section: Measurement Resultsmentioning

confidence: 99%

Section: Measurement Resultsmentioning

confidence: 99%