Effects of H sub 2 S and and H sub 2 O on hydrogen permeation in stainless steels

Conference · · TMS (The Metallurgical Society) Paper Selection; (USA)

OSTI ID:5449555

Perng, T P; Altstetter, C J ^[1]

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1. Univ. of Illinois, Urbana (USA)

Hydrogen transport parameters were measured for a series of stainless steel alloys including austenitic, ferritic, and dual phase alloys. A gas-phase permeation technique was employed over the temperature range 50-350 C. Most of the specimens were ion sputtered and Pd-coated. Experiments were carried out with pure hydrogen and in the presence of H{sub 2}O or H{sub 2}S. The AISI 301 stainless steel had undergone various amounts of deformation, resulting in different contents of martensitic phase, which enhances the diffusivity and permeability. This result was used to compare with that of deformed AISI 310 stainless steel in which no phase transformation was induced. H{sub 2}O vapor appeared to reduce the hydrogen transport for the uncoated specimens, whereas no effect was observed for the Pd-coated ones. H{sub 2}S reduced the hydrogen transport regardless of the Pd coating. For the sputtered and Pd-coated specimens, hydrogen permeation from pure hydrogen gas was found to be bulk-controlled, and independent of the input hydrogen pressure and thickness of the specimens.

• OSTI ID: 5449555
• Report Number(s): CONF-840909--
• Conference Information: Journal Name: TMS (The Metallurgical Society) Paper Selection; (USA) Journal Volume: 56
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
AUSTENITIC STEELS
CATALYTIC EFFECTS
CHALCOGENIDES
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
COMPARATIVE EVALUATIONS
CORROSION RESISTANT ALLOYS
DEFORMATION
DEPOSITION
DIFFUSION
ELEMENTS
FERRITIC STEELS
FLUIDS
GASES
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
METALS
NICKEL ALLOYS
NONMETALS
PALLADIUM
PERMEABILITY
PLATINUM METALS
STAINLESS STEEL-301
STAINLESS STEEL-310
STAINLESS STEELS
STEEL-CR17NI7
STEEL-CR25NI20
STEELS
SULFIDES
SULFUR COMPOUNDS
SURFACE COATING
TRANSITION ELEMENTS
VAPORS
WATER VAPOR