Positron beam and RBS studies of thermally grown oxide films on stainless steel grade 304

Horodek, P.; Siemek, Krzysztof; Kobets, A. G.; Kulik, M.; Мешков, И. Н.

doi:10.1016/j.apsusc.2015.01.225

Cited by 15 publications

(6 citation statements)

References 36 publications

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“…For C alloy characteristic bump in region 170-320 nm occurs, which is connected with alloy composition containing the large quantity of iron. Similar bumps were reported for thermally grown oxide films on stainless steel grade 304 [34]. It should be emphasized that according to the literature [35,36], under the conditions of high temperature the multi-oxide film consists of α-Fe 2 O 3 at the top of the layer and spinel containing mainly Cr 2 O 3 and other kinds of Fe, Cr and Ni oxides.…”

Section: Variable Energy Positron Beam Resultssupporting

confidence: 81%

Surface and Subsurface Defects Studies of Dental Alloys Exposed to Sandblasting

Siemek

Kulik

Есеев

et al. 2019

Acta Metall. Sin. (Engl. Lett.)

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The defects created in commercial dental alloys during blasting with alumina particles propelled in compressed air under pressure 0.1 and 0.4 MPa have been studied using positron annihilation spectroscopy, scanning electron microscopy and X-ray diffraction. It was observed that higher pressure causes the increase in roughness and damaged zone range. The type of defects was determined as vacancies on dislocations. The defect concentration decreases with the depth and depends on alloys' type and applied pressure. The Rutherford backscattering spectroscopy and variable energy positron beam studies indicate shallow alumina deposition in material and show that small pressure of 0.1 MPa is not enough to remove metal surface oxides completely in 60 s in all studied dental alloys.

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Section: Variable Energy Positron Beam Resultssupporting

confidence: 81%

Surface and Subsurface Defects Studies of Dental Alloys Exposed to Sandblasting

Siemek

Kulik

Есеев

et al. 2019

Acta Metall. Sin. (Engl. Lett.)

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“…During the years 2014-2018 about 80 runs for PAS were performed at the LEPTA facility. The samples of irradiated metals [7][8][9][10][11] as well as subjected to a surface treatment [12,13] were subsequently investigated by the DBAL PAS method.…”

Section: Studies Using Dbal Pas Methods At Lepta Facilitymentioning

confidence: 99%

Development of Positron Annihilation Spectroscopy at Joint Institute for Nuclear Research

et al. 2019

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The method of Positron Annihilation Spectroscopy (PAS) has been under development and application since 2013 at the Low Energy Particle Toroidal Accumulator (LEPTA) facility in the Dzhelepov Laboratory of Nuclear Problems of JINR. The PAS at the LEPTA is based on the slow positron injector of original design that provides a positron flux of a high monochromaticity. The FWHM of positron energy at the exit of the positron source is of 1.5-3 eV. The positron energy on the target can be varied in the range 50 eV-36 keV (90 keV in the nearest future) with an accuracy of not less than 1%. The first version of a special channel for transportation of the positrons from the source to the target was constructed in 2013. Presently the research is carried out applying the method of the Doppler Broadening of Annihilation Line. In 2018 the channel was developed for application of Positron Annihilation Lifetime Spectroscopy. It will be equipped with instrumentation according to original scheme presented in this article. This article describes three versions of PAS, their peculiarities and specific scheme as well as the parameters of the experimental equipment for PAS used and developed at LEPTA.

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“…The mentioned apparatus working at JINR was used to perform many investigations in the field of material science [15][16][17][18][19][20][21][22].…”

Section: Pas At Jinrmentioning

confidence: 99%

Positron Annihilation Spectroscopy in Material studies

Horodek

Khiem²,

Siemek³

et al. 2019

Comm. in Phys.

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Positron annihilation spectroscopy (PAS) is a method dedicated to detection of open-volume type of defects in materials. Nowadays, this technique is of a great interest due to the practical character of obtained results. New devices using monoenergetic positron beams are built. The paper presents the basics of PAS, a description of popular experimental techniques and their application on the basis of results obtained in the frame of collaboration between Joint Institute for Nuclear Research (JINR), Institute of Physics - Vietnamese Academy of Science and Technology (VAST) and Vietnam Atomic Energy Institute (Vinatom).. The positron beam with energy up to 35 keV and other apparatus for PAS studies are under operation in Dubna.

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Positron beam and RBS studies of thermally grown oxide films on stainless steel grade 304

Cited by 15 publications

References 36 publications

Surface and Subsurface Defects Studies of Dental Alloys Exposed to Sandblasting

Surface and Subsurface Defects Studies of Dental Alloys Exposed to Sandblasting

Development of Positron Annihilation Spectroscopy at Joint Institute for Nuclear Research

Positron Annihilation Spectroscopy in Material studies

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