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Wyszukujesz frazę "ion beam analysis" wg kryterium: Wszystkie pola


Wyświetlanie 1-4 z 4
Tytuł:
Ion Beam Analysis of Hydrogen-Treated Ti/TiN Protective Nanomultilayers
Autorzy:
Kakuee, O.
Fathollahi, V.
Lamehi-Rachti, M.
Oliaiy, P.
Seyedi, H.
Safa, S.
Mojtahedzadeh Larijani, M.
Moazzami, H.
Powiązania:
https://bibliotekanauki.pl/articles/1419781.pdf
Data publikacji:
2012-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.43.-h
68.49.-h
81.15.Jj
25.45.-z
Opis:
Ti/TiN multilayer films with a few multilayer periods and a total sub-μm thickness were deposited on AISI 304 stainless steel substrates by ion coating deposition technique. To investigate the effect of hydrogen treatment on the corrosion behavior of the multilayers, some of the samples were hydrogen treated after deposition of the first and/or the second Ti interlayer. $\text{}^{14}N(d,\alpha_1) \text{}^{12}C$ nuclear reaction and the Rutherford backscattering spectrometry were used to obtain the atomic composition profiles and thickness of Ti/TiN layers. Nuclear reaction analysis confirmed the presence of two separable TiN layers of comparable thickness on the surface and in depth of the two-period multilayers. These techniques were used to determine the thickness of individual Ti and TiN layers and revealed that the stoichiometry of TiN layers was approximately Ti:N=1:1. Hydrogen depth profile in the prepared samples was obtained by elastic recoil detection analysis. It was found that a remarkable volume of hydrogen was uptaken by the Ti layer in the hydrogen treated samples. The TiN (200) diffraction peak in the X-ray diffraction pattern was observed with different intensities depending on the sample preparation parameters. The corrosion behavior of the multilayers was studied by means of potentiodynamic polarization in 0.5 M NaCl solutions. It was found that the hydrogen treatment of Ti interlayer could potentially improve the corrosion properties of the Ti/TiN layers.
Źródło:
Acta Physica Polonica A; 2012, 122, 1; 132-137
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of Painting Layers of Sennefer Tomb by Ion Beam Analysis
Autorzy:
Abd El Aal, S.
Powiązania:
https://bibliotekanauki.pl/articles/1504061.pdf
Data publikacji:
2011-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.70.En
07.60.Pb
Opis:
Egypt has many pharaonic tombs for kings, queens and noblemen. The Sennefer tomb, one of the most important nobleman tombs, is located in the southern hillside of Sheikh Abd El-Qurna - west side of Luxor. It is dated back to 1439-1413 B.C. (18th Dynasty) and is usually referred as the Tomb of Vines, due to the large part of the ceiling of the burial chamber. The vine tomb was carved inside a mountain, its walls are covered with plaster and were painted using the tempera technique (pigments mixed with organic binding medium). The analysis was performed by using particle-induced X-ray emission, microbeam particle-induced X-ray emission and optical microscope for the six samples from the Vine tomb such as white, black, red, yellow, blue and green pigments and for the ground layers of the tomb in order to identify the composition of plaster layers and pigments. The data about the nature of these materials are indispensable for conservation and cleaning.
Źródło:
Acta Physica Polonica A; 2011, 120, 1; 144-148
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accelerators in materials research
Autorzy:
Turos, A.
Powiązania:
https://bibliotekanauki.pl/articles/147928.pdf
Data publikacji:
2005
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
materials research
accelerators
ion beam modification
ion beam analysis
Opis:
Abstract Since at least forty years accelerators of charged particles no longer belong to nuclear physics exclusively. This is especially true for accelerators at energies below 1 GeV. The vast majority of accelerators in this energy range is used for materials research and medicine. In materials research the applications are principally twofold: modifications of solids and surface layer microanalysis. Two most important challenges for materials research at the beginning of XXI century as determined by the Materials Research Society are: development of materials able to repair human body and development of materials for new electronic devices able to cope with the enormous amount of information to be stored and transmitted. The role of accelerators with regard to the challenges of modern technology will be discussed.
Źródło:
Nukleonika; 2005, 50,suppl.3; 11-15
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comprehensive Analysis of Ion Beam Induced Stainless Steel Surface Morphology
Autorzy:
Kowalski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1503932.pdf
Data publikacji:
2011-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
79.20.Rf
Opis:
Surface morphology, one of the various physical properties modified by ion beam irradiation, is usually characterized by well known and very often investigated surface topography and surface roughness. The paper presents two additional aspects of surface morphology modification (called by the author: profile variability and surface morphology arrangement) that seem to be good complementary indicators of morphology changes. Surface micro- and nanotopographies were observed by means of scanning electron and near-field microscopes. High quality profilograph and atomic force microscope were utilised to measure main selected roughness parameters (based on the well known surface profiles). To detect any profile shape alteration during ion beam bombardment fractal analysis was used, and especially fractal dimension D that can give information about a rate $p_{v}$ of profile shape variability. Surface morphology arrangement, i.e. a question whether it is random or determined, was studied with the use of frequency plots resulting from harmonic analysis of profiles. Surface topographies, selected roughness parameters, fractal dimensions and frequency plots relating to stainless steel of 1H18N9T (made in Poland) bombarded with perpendicular (Θp = 0°) as well as very inclined (Θp = 85-87°) beam were examined. Low energy (0.8 keV) broad argon ion beam and neutralized narrow argon or krypton ion beams (up to 6 keV) were used in the experiments.
Źródło:
Acta Physica Polonica A; 2011, 120, 1; 70-74
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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