SYMPOSIA PAPER
Published:
01 January 1988
STP45292S
The Barnacle Electrode Method to Determine Diffusible Hydrogen in Steels
SourceAn electrochemical method to determine diffusible hydrogen in steels is described. It is a simple but very sensitive device which is capable of measuring hydrogen concentrations of less than 1 weight ppm. The method makes use of nickel/nickel oxide as a polarizing electrode, which is coupled to a hydrogen-containing steel part. The hydrogen is oxidized at the specimen surface, and the current measured is related to the hydrogen concentration. The method demonstrates a high precision in the measurements. It is shown that the measured hydrogen concentration resulting from cadmium plating is a function of specimen bulk. Results from experiments with plated/baked/stressed 300M steel are reviewed.
Author Information
Berman, David, A.
Aero Materials Division, Naval Air Development Center, Warminster, PA
Agarwala, Vinod, S.
Aero Materials Division, Naval Air Development Center, Warminster, PA
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Details
Developed by Committee: F07
Pages: 98–104
DOI: 10.1520/STP45292S
ISBN-EB: 978-0-8031-6239-6
ISBN-13: 978-0-8031-0959-9