Helium trapping in aluminum and sintered aluminum powders

Conference · Wed Jan 01 04:00:00 EST 1975

OSTI ID:4162462

Das, S K; Kaminsky, M; Rossing, T

The surface erosion of annealed aluminum and of sintered aluminum powder (SAP) due to blistering from implantation of 100-keV $sup 4$He$sup +$ ions at room temperature has been investigated. A substantial reduction in the blistering erosion rate in SAP was observed from that in pure annealed aluminum. In order to determine whether the observed reduction in blistering is due to enhanced helium trapping or due to helium released, the implanted helium profiles in annealed aluminum and in SAP have been studied by Rutherford backscattering. The results show that more helium is trapped in SAP than in aluminum for identical irradiation conditions. The observed reduction in erosion from helium blistering in SAP is more likely due to the dispersion of trapped helium at the large Al-Al$sub 2$$O$$sub 3$ interfaces and at the large grain boundaries in SAP than to helium release. (auth)

• Research Organization: Argonne National Lab., Ill. (USA)
• DOE Contract Number: W-31109-ENG-38
• NSA Number: NSA-33-007086
• OSTI ID: 4162462
• Report Number(s): CONF-750949--9
• Country of Publication: United States
• Language: English

Related Subjects

*ALUMINIUM-- PHYSICAL RADIATION EFFECTS
*SAP-- PHYSICAL RADIATION EFFECTS
*THERMONUCLEAR REACTOR WALLS-- PHYSICAL RADIATION EFFECTS
700209* --Fusion Energy--Fusion Power Plant Technology-- Component Development & Materials Testing
HELIUM IONS
IRRADIATION
KEV RANGE 10-100
N70800* --Physics--Controlled Thermonuclear Research-- Thermonuclear Engineering & Equipment
SURFACES
SWELLING
VOIDS