Galvanic currents and hydrogen permeation currents caused by galvanic coupling

Journal Article · Tue May 01 00:00:00 EDT 1990 · Corrosion (Houston); (USA)

DOI:https://doi.org/10.5006/1.3585117· OSTI ID:6794264

Armacanquil, M E ^[1]; Harasyn, D E ^[2]

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1. Corrosion Research Center, Univ. of Minnesota, Minneapolis, MN (US)
2. Rosemount Inc., Eden Prarie, MN (US)

This paper reports on galvanic coupling and hydrogen permeation experiments performed in a Devanathan-Stachurski cell to measure simultaneously the galvanic currents and the hydrogen permeation currents in an attempt to determine the extent of hydrogen charging into noble metals as a result of galvanic coupling. Large amounts of hydrogen permeated through the more noble element of the couple. The magnitude of the hydrogen permeation flux varied depending on the galvanic coupling conditions. No simple direct relationship between galvanic currents and hydrogen permeation currents was observed, although large hydrogen permeation currents were usually developed whenever large galvanic currents were established.

• OSTI ID: 6794264
• Journal Information: Corrosion (Houston); (USA), Journal Name: Corrosion (Houston); (USA) Vol. 46:5; ISSN CORRA; ISSN 0010-9312
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ALLOY-NI66CU32
ALLOYS
ATOM TRANSPORT
CATHODIC PROTECTION
CHEMICAL REACTIONS
COPPER ALLOYS
CORROSION
CORROSION PROTECTION
CURRENT DENSITY
DATA
ELECTROCHEMICAL CORROSION
ELECTROLYTES
EMBRITTLEMENT
EXPERIMENTAL DATA
HASTELLOYS
HYDROGEN EMBRITTLEMENT
INFORMATION
IRON ALLOYS
MANGANESE ADDITIONS
MANGANESE ALLOYS
MONEL
MONEL 400
NEUTRAL-PARTICLE TRANSPORT
NICKEL ALLOYS
NICKEL BASE ALLOYS
NUMERICAL DATA
RADIATION TRANSPORT