Determination of Deuterium Pick-Up in Zr-Nb Alloy by Hot Vacuum Extraction-Quadrupole Mass Spectrometry

Kinetics of hydrogen absorption/desorption in the Zr–2.5Nb alloy

“…The mass spectrometry signal is quantitatively calibrated by passing it via a standard leak, 20,21 with the leak correction factor for HD equal to the arithmetic mean of the H 2 and D 2 correction factors. 15,22…”

“…The mass spectrometry signal is quantitatively calibrated by passing it via a standard leak, 20,21 with the leak correction factor for HD equal to the arithmetic mean of the H 2 and D 2 correction factors. 15,22 DSC (differential scanning calorimetry) tests are performed in a pure argon atmosphere at two different heating rates (2.5-20 1C min À1 ) from 20 1C to 1050 1C. After heating to 1050 1C, the sample was cooled to 20 1C at the same rate.…”

“…[12][13][14] As a result, in order to assess the reactor's operational health, the deuterium absorption rate and deuterium concentration in the Zr-2.5Nb alloy pressure tube must be measured on a regular basis. 15 Hot vacuum extraction mass spectrometry (HVE-MS) is currently an efficient method for measuring equivalent hydrogen concentration in pressure tube sampling. 16 In this study, the formation of deuterides in Zr-2.5Nb pressure tube materials and the thermal desorption kinetics of deuteride powders are investigated.…”

Experimental studies on hydrogen evolution from zirconium alloy based matrices using TGA-EGA

“…In HVE-QMS technique, the sample is heated to 1353 K in vacuum (10 -6 torr), H and D extracted from the metal matrix are collected in a collection flask having calibrated volume to estimate the total gas collected and passed through QMS to evaluate H and D in the sample [11,12].…”