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97272 A COMPARISON BETWEEN AN ELECTROCHEMICAL AND A VACUUM LOSS TECHNIQUE AS HYDROGEN PROBES FOR CORROSION MONITORING

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Product Number: 51300-97272-SG
ISBN: 97272 1997 CP
Author: O. YEPEZ, J.R. VERA, R. CALLAROTTI
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The relationship between a vacuum loss based field method and a conventional electrochemical technique for measuring hydrogen permeation through metals, has been established by theoretical modeling and laboratory experimentation on thick wall pipes. The electrochemical technique used in this work tends to be more accurate for detecting small hydrogen fluxes in the laboratory but may be more difficult to apply in the field than the vacuum based method. Comparison of the two techniques showed that both give the same transient response as the length of capillary tubing is reduced in the vacuum device. Keywords:Corrosion, hydrogenpermeation, sensor, circuital modeling discretization,vacuum hydrogen probe.
The relationship between a vacuum loss based field method and a conventional electrochemical technique for measuring hydrogen permeation through metals, has been established by theoretical modeling and laboratory experimentation on thick wall pipes. The electrochemical technique used in this work tends to be more accurate for detecting small hydrogen fluxes in the laboratory but may be more difficult to apply in the field than the vacuum based method. Comparison of the two techniques showed that both give the same transient response as the length of capillary tubing is reduced in the vacuum device. Keywords:Corrosion, hydrogenpermeation, sensor, circuital modeling discretization,vacuum hydrogen probe.
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