Helium trapping in aluminum and sintered aluminum powders

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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 ... continued below

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8 p.

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Das, S.K.; Kaminsky, M. & Rossing, T. January 1, 1975.

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Description

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)

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8 p.

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Dep. NTIS

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  • International conference on ion beam surface layer analysis, Karlsruhe, F.R. Germany, 15 Sep 1975

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  • Report No.: CONF-750949--9
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 4162462
  • Archival Resource Key: ark:/67531/metadc865637

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 1975

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

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  • Oct. 11, 2017, 2:35 p.m.

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Das, S.K.; Kaminsky, M. & Rossing, T. Helium trapping in aluminum and sintered aluminum powders, article, January 1, 1975; Illinois. (digital.library.unt.edu/ark:/67531/metadc865637/: accessed April 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.