Accession Number:

ADA280827

Title:

Surface Treatment of Hydrogen Absorption Into Alloys

Descriptive Note:

Rept. for 1 Feb 1992-31 Jan 1993

Corporate Author:

TEXAS A AND M UNIV COLLEGE STATION DEPT OF CHEMICAL ENGINEERING

Report Date:

1993-02-01

Pagination or Media Count:

52.0

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.

Subject Categories:

  • Inorganic Chemistry
  • Physical Chemistry
  • Metallurgy and Metallography
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE