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    Wyświetlanie 1-3 z 3
    Tytuł:
    Present status and prospects of research in SINS on the modification of surface properties by pulsed plasma streams
    Autorzy:
    Langner, J.
    Piekoszewski, J.
    Stanisławski, J.
    Werner, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/146758.pdf
    Data publikacji:
    2000
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    IONOTRON plasma injector
    pulsed plasma processing
    surface modification
    Opis:
    The paper presents examples of the most important results obtained in SINS during the last decade, interesting from the point of view of industrial applications. It also indicates some of the most prospective directions in research on modification of the surface properties of materials by means of pulsed plasma streams.
    Źródło:
    Nukleonika; 2000, 45, 3; 193-197
    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
      Wyświetlanie 1-3 z 3

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