Hydrogen Entry and Transport Mechanisms in Structural Metals.
Abstract
This report summarizes the results of an investigation into the optimization of the electrochemical hydrogen permeation technique. The results of the research can be summarized as follows: 1. Hydrogen permeation fluxes through iron membranes have been demonstrated to be affected by the reactivity of the membrane surfaces. The use of electroplated palladium entry and exit surfaces is recommended if the object of the study is to measure hydrogen mass transfer rates through a ferrous, or similar metal, membrane. 2. The apparent hydrogen diffusivity rates determined in this research are slower than those commonly reported in the literature. 3. Diffusivities based on times to reach steady-state could not be calculated for electrochemically-charged membranes because steady-state fluxes were never reached during the one-week duration of the permeation experiments. 4. An attempted determination of the effects of electroslag remelting on the hydrogen permeability of high strength steels could measure no significant difference between the steels tested.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1979
- Accession Number
- ADA078812
Entities
People
- Ben Allen
- Jeffrey Jones
- Michael Surkein
- R. Heidersbach
Organizations
- University of Rhode Island