Surface Treatment of Hydrogen Absorption Into Alloys

Abstract

The effectiveness of underpotential deposition of Zn, Bi and Pb onto 4340 steel substrates on the reduction of hydrogen evolution and on the degree of hydrogenation ingress was determined. It is shown that the underpotentially deposited Zn, Bi and Pb from their plating solutions inhibit the discharge of hydrogen. In the presence of Bi on the substrate surface, the hydrogen discharge currents are reduced drastically (by up to 20 times) compared with the value obtained on bare steel. As a consequence, the underpotentially deposited zinc, bismuth and lead on AISI 4340 steel membranes reduce the steady state hydrogen flux by 52%, 65% and 71%, respectively.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1993
Accession Number
ADA280827

Entities

People

  • Branko N. Popov
  • Guorui Zheng
  • Ralph E. White

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Cells
  • Chemistry
  • Corrosion
  • Current Density
  • Desorption
  • Diffusion Coefficient
  • Electrodes
  • Equations
  • Hydrogen Embrittlement
  • Inhibition
  • Mechanical Properties
  • Metals
  • Physical Properties
  • Protons
  • Steady State
  • Stress Corrosion
  • Surface Properties

Readers

  • Electrochemical Surface Science
  • Materials Science and Engineering.
  • Thin Film Deposition Science.