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Comparison of the Helium Porosity Parameters in Vanadium Alloy TEM Samples Prepared by Various Techniques

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dc.contributor.authorStal'tsov, M. S.
dc.contributor.authorChernov, I. I.
dc.contributor.authorKorshunov, S. N.
dc.contributor.authorLagov, P. B.
dc.contributor.authorСтальцов, Максим Сергеевич
dc.contributor.authorЧернов, Иван Ильич
dc.date.accessioned2024-11-25T17:51:17Z
dc.date.available2024-11-25T17:51:17Z
dc.date.issued2020
dc.description.abstractThe microstructures and the porosity parameters in vanadium alloys irradiated by helium ions are compared after preparing thin films from them for transmission electron microscopy (TEM) by two different techniques. V-1% Ti, V-1% Ta, V-2% Ta, and V-1% Ta-1% W alloy samples are subjected to annealing at 1000 degrees C for 2 h and then to 40-keV helium ion irradiation to a fluence of 5 x 10(20) m(-2) at a temperature of 650 degrees C. TEM samples are prepared by one-sided electrolytic thinning (ET) on the unirradiated side and by focused ion beam (FIB) cutting normal to the irradiated surface. The microstructures of the foil samples prepared by ET and FIB are shown to be significantly different, which leads to a discrepancy between the calculated porosity parameters and the irradiation-induced swelling. When samples are prepared by ET, the picture substantially depends on the material layer to be fixed, and the layer thickness and position are not controlled. Therefore, the use of ET samples leads increases the error of measuring the porosity parameters, and reproducibility of the results can hardly be reached in this case, which should be taken into account in investigations. Using FIB technique, one can measure the foil thickness in a scanning electron microscope during sample preparation, study the total swelling of the entire irradiated layer, and analyze the distribution of objects over the depth of an irradiated target along ion trajectories.
dc.format.extentС. 206-211
dc.identifier.citationComparison of the Helium Porosity Parameters in Vanadium Alloy TEM Samples Prepared by Various Techniques / Stal'tsov, MS [et al.] // Russian Metallurgy (Metally). - 2020. - 2020. - № 3. - P. 206-211. - 10.1134/S0036029520030143
dc.identifier.doi10.1134/S0036029520030143
dc.identifier.urihttps://www.doi.org/10.1134/S0036029520030143
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85083085040&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000522649100006
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/20538
dc.relation.ispartofRussian Metallurgy (Metally)
dc.titleComparison of the Helium Porosity Parameters in Vanadium Alloy TEM Samples Prepared by Various Techniques
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue3
oaire.citation.volume2020
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