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    Wyświetlanie 1-7 z 7
    Tytuł:
    Tribological effects of ion implantation of Inconel 600
    Autorzy:
    Chmielewski, M.
    Barlak, M.
    Pietrzak, K.
    Kaliński, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/146652.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    foil bearings
    ion implantation
    Inconel 600
    friction coefficient
    Opis:
    Commercial Inconel 600 nickel-chromium alloy was implanted with nitrogen, chromium, titanium, yttrium and copper with tin (as bronze components) ions to doses ranging from 1.6e17 to 3.5e17 cm-2. The main goal of the research was to investigate the properties of the modified alloy in the context of its application in foil bearings. The virgin and the treated samples were tribologically tested and examined by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The technological studies were preceded by modelling of concentration values of the introduced elements. The results obtained with the use of ion implantation are discussed.
    Źródło:
    Nukleonika; 2012, 57, 3; 357-362
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ion implantation followed by laser/pulsed plasma/ion beam annealing : a new approach to fabrication of superconducting MgB2 thin films
    Autorzy:
    Piekoszewski, J.
    Werner, Z.
    Barlak, M.
    Kolitsch, A.
    Szymczyk, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/146817.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    MgB2
    superconducting films
    pulsed plasma annealing
    Opis:
    The paper presents a new approach to formation of superconducting MgB2 thin films: ion implantation followed by annealing in an unconventional second step treatment using pulsed laser, plasma, or ion beams. Merits and drawbacks of individual approaches are discussed.
    Źródło:
    Nukleonika; 2008, 53, 1; 7-10
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes of stainless steels surface morphology as a result of interaction with intense pulsed plasma beams containing ions of rare earth elements
    Autorzy:
    Sartowska, B.
    Piekoszewski, J.
    Waliś, L.
    Składnik-Sadowska, E.
    Barlak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/146323.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    intense plasma pulses
    stainless steel
    surface modification
    REE addition
    Opis:
    Among different methods used in surface engineering such as CVD, PVD, ion implantation etc., the techniques using high intensity ion or plasma beams are relatively new ones. The results reported thus far show that the treatment of steel surface with high intensity plasma pulses can lead to changes of its morphology and mechanical properties. Stainless steels have very good corrosion resistance, but they have low hardness and poor tribological properties. The intense pulsed plasma beams were used for modification of alloyed steels especially austenitic (1.4301 and 1.4401) and ferritic (1.4016) stainless steels with various content of alloying elements. Samples were irradiated with 2, 5 or 10 short (μs scale) intense (density of energy was about 5 J/cm2) pulses. Heating and cooling processes were of non-equilibrium type. In all samples the near surface layer of the thickness in μm range was melted and simultaneously doped with cerium and lanthanum. The aim of this work was to investigate the changes of stainless steel surface morphology after melting, rare earth elements (REE) addition and rapid solidification after interaction with intense pulsed plasma beams. The surface morphology was analyzed using a scanning electron microscopy (SEM) technique. Changes of surface roughness were determined by profilometric measurements. The efficiency of REE addition process was also determined.
    Źródło:
    Nukleonika; 2008, 53, suppl. 2; 43-48
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of nuclear techniques for characterization of materials surfaces : own investigations examples
    Autorzy:
    Sartowska, B.
    Piekoszewski, J.
    Waliś, L.
    Starosta, W.
    Barlak, M.
    Nowicki, L.
    Ratajczak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/146726.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    conversion electron Mössbauer spectroscopy (CEMS)
    nuclear reaction analysis (NRA)
    nuclear techniques
    surface characterization
    surface modification
    Opis:
    Different methods and techniques for material characterization are often used as a standard procedure for the determination of material properties. Nuclear techniques provide new and more detailed information about the investigated materials. The main goal of the carried out experiments was to improve surface properties including wear, corrosion and high temperature oxidation resistance. Modification processes were carried out using high intensity pulsed plasma beams - HIPPB (106-108 W.cm-2) generated in a rod plasma injector (RPI). In most solid materials such treatment leads to a fast transient melting of the surface layer of the substrate followed by rapid crystallization. Heating and cooling processes are of non-equilibrium type. Initial and modified materials were characterized using different investigation methods including nuclear techniques. Results of the used nuclear techniques such as nuclear reaction analysis (NRA), Rutherford backscattered spectroscopy (RBS) and conversion electron Mössbauer spectroscopy (CEMS) are presented in the paper.
    Źródło:
    Nukleonika; 2012, 57, 4; 521-528
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Implanted manganese redistribution in Si after He+ irradiation and hydrogen pulse plasma treatment
    Autorzy:
    Werner, Z.
    Pochrybniak, C.
    Barlak, M.
    Piekoszewski, J.
    Korman, A.
    Heller, R.
    Szymczyk, W.
    Bocheńska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/147018.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    dilute magnetic semiconductors (DMS)
    Mn-implanted Si
    ion beam induced epitaxial crystallization
    Opis:
    Si-Mn alloy with a Mn content of a few percent is potentially a candidate for room temperature (RT) dilute magnetic semiconductor (DMS). However, the present methods of material manufacture suffer from problems with poor Mn solubility and thermodynamical limitations. We study a non-equilibrium method in which silicon is first implanted with 160 keV manganese ions to a dose of 1 × 1016 ions/cm2 and next either irradiated with 1.5 MeV 4He+ ions from the Warsaw Van de Graaff accelerator at 400°C or treated with high-energy hydrogen plasma pulses. Conclusion from Rutherford backscattering spectrometry (RBS) examination of the samples is that both approaches lead to recovery of crystalline surface layer with manganese occupying off-substitutional sites. The potential development of the method is discussed.
    Źródło:
    Nukleonika; 2011, 56, 1; 5-8
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wettability of carbon and silicon carbide ceramics induced by their surface alloying with Zr and Cu elements using high intensity pulsed plasma beams
    Autorzy:
    Barlak, M.
    Piekoszewski, J.
    Sartowska, B.
    Waliś, L.
    Starosta, W.
    Kierzek, J.
    Pochrybniak, C.
    Kowalska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/146789.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    wettability
    ceramic-metal joints
    high intensity pulsed plasma beams (HIPPB)
    Opis:
    Joining of metals with ceramics is very difficult, because properties of these materials are very different. One of the methods of improving mechanical strength of the obtained joints is the introduction of an additional interlayer to the joining area. This paper presents the Zr and Cu-rich layers in C and SiC substrates obtained using the high intensity pulsed plasma beams method. The results of Zr plasma modifications were beneficial and similar to the results obtained in previous works with Ti. The measured contact angles were below 90 centigrade. The results with Cu plasma were unfavourable with contact angles close to 180 centigrade. Apart from the sessile-drop test and to extend the range of analysis, the investigated samples were examined by stereoscopic optical microscopy (OM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDXS), grazing angle X-ray diffraction (GXRD), and Rutherford back scattering (RBS) measurements.
    Źródło:
    Nukleonika; 2012, 57, 4; 477-483
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    High - temperature oxidation resistance in yttrium implanted stainless steel
    Autorzy:
    Barlak, M.
    Piekoszewski, J.
    Werner, Z.
    Sartowska, B.
    Waliś, L.
    Starosta, W.
    Kierzek, J.
    Kowalska, E.
    Wilhelm, R. A.
    Pochrybniak, C.
    Woźnica, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/146785.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    high-temperature oxidation resistance
    ion implantation
    yttrium
    Opis:
    Austenitic AISI 304, 316L and ferritic 430 stainless steels were implanted with yttrium to fluences ranging between 1 x 1015 and 5 x 1017 ions/cm2. The samples were subjected to oxidation in air at a temperature of 1000 centigrade for a period of 100 h and next examined by stereoscopic optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDX) and Rutherford back scattering spectrometry (RBS). The results obtained with the use of ion implantation are discussed.
    Źródło:
    Nukleonika; 2012, 57, 4; 473-476
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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