Reduction of surface erosion caused by helium blistering: comparison between vacuum-cast and sintered-beryllium

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The blister formation and the erosion associated with blistering in a vacuum cast beryllium foil and in a foil of sintered beryllium powder have been investigated for irradiation at room temperature and at 600$sup 0$C with 100 keV $sup 4$He$sup +$ ions for total doses of 0.5 to 1.0 C cm$sup -2$. For room temperature irradiation the blisters in sintered beryllium powder are smaller in size than in vacuum cast beryllium. For irradiation at 600$sup 0$C large scale exfoliation of blisters was observed for vacuum cast beryllium but only small amount of exfoliation was seen for sintered beryllium powder. The ... continued below

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5 p.

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Das, S.K. & Kaminsky, M. January 1, 1975.

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The blister formation and the erosion associated with blistering in a vacuum cast beryllium foil and in a foil of sintered beryllium powder have been investigated for irradiation at room temperature and at 600$sup 0$C with 100 keV $sup 4$He$sup +$ ions for total doses of 0.5 to 1.0 C cm$sup -2$. For room temperature irradiation the blisters in sintered beryllium powder are smaller in size than in vacuum cast beryllium. For irradiation at 600$sup 0$C large scale exfoliation of blisters was observed for vacuum cast beryllium but only small amount of exfoliation was seen for sintered beryllium powder. The results show a reduction in erosion rate in sintered beryllium as compared to the erosion rate in vacuum cast beryllium. For room temperature irradiation no erosion rate could be determined for the sintered beryllium foil since no blister exfoliation was observed. For 600$sup 0$C irradiation the erosion rate for sintered beryllium foil is more than an order of magnitude smaller than for vacuum cast beryllium. (auth)

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5 p.

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Dep. NTIS

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  • IEEE 6. symposium on engineering problems of fusion research, San Diego, California, USA, 17 Nov 1975

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  • Report No.: CONF-751125--72
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 4131821
  • Archival Resource Key: ark:/67531/metadc868762

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  • January 1, 1975

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  • Sept. 16, 2016, 12:32 a.m.

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  • Oct. 10, 2017, 9:20 p.m.

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Das, S.K. & Kaminsky, M. Reduction of surface erosion caused by helium blistering: comparison between vacuum-cast and sintered-beryllium, article, January 1, 1975; Illinois. (digital.library.unt.edu/ark:/67531/metadc868762/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.