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    Wyświetlanie 1-4 z 4
    Tytuł:
    Experimental study of Fe-Ni-Ti-Cr system
    Autorzy:
    Hoppe, Viktoria
    Gibas, Anna
    Grzegorczyk, Weronika
    Małecki, Marcin
    Hasiak, Mariusz
    Powiązania:
    https://bibliotekanauki.pl/articles/1188070.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    właściwości mechaniczne
    stopy z pamięcią kształtu
    stop Fe-Ni-Ti
    stop Fe-Ni-Ti-Cr
    mechanical properties
    shape memory alloys
    Fe-Ni-Ti alloy
    Fe-Ni-Ti-Cr alloy
    Opis:
    The research comprises a discussion about a formation of intermetallic phase with stoichiometric composition Fe2Ti, called Laves phase, and influence of chromium on the whole structure containing this phase by means of comparison of the two alloys. A base Fe35Ni35Ti30 alloy was used as a reference and then compared with a Fe-Ni-Ti chromium doped - Fe30Ni35Ti30Cr5 alloy. The study of microstructure performed with scanning electron microscope enabled to distinguish different phases. These regions are rich in mixture of Fe-Ni and Ti-Ni elements. The identified phases are Fe2Ti and Ni3Ti which was confirmed by X-ray diffraction and simultaneously it is consistent with energy dispersive spectroscopy results. Differential scanning calorimetry confirmed also multi-phase composition. As a result different hardness was measured for these phases using nanoindentation. The overall hardness was established using the Vickers method.
    Źródło:
    Interdisciplinary Journal of Engineering Sciences; 2019, 7, 1; 1--14
    2300-5874
    Pojawia się w:
    Interdisciplinary Journal of Engineering Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Properties of Ti-6Al-7Nb titanium alloy nitrocarburized under glow discharge conditions
    Autorzy:
    Kajzer, A.
    Grzeszczuk, O.
    Kajzer, W.
    Nowińska, K.
    Kaczmarek, M.
    Tarnowski, M.
    Wierzchoń, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/306236.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    Ti-6Al-7Nb alloy
    diffusive nitrocarburized layer
    mechanical properties
    electrochemical properties
    Opis:
    The paper presents the results of physicochemical and mechanical properties of the Ti-6Al-7Nb alloy with surface modified by formation of a diffusive nitrocarburized layer deposited in a low-temperature plasma process. The main aim of the study was to evaluate the influence of steam sterilization and exposure to Ringer’s solution on the utility properties of the alloy. Methods: Based on the study of the microstructure, roughness, wettability, resistance to pitting corrosion, ion infiltration and mechanical properties, the usefulness of the proposed method of surface treatment for clinical application was proven. Results: Deposition of the nitrocarburized layer increased the surface roughness and surface hardness, but also reduced the contact angle, and corrosion resistance with respect to the polished surfaces. The nitrocarburized layer is a barrier against the infiltration of ions to the solution and sterilization and exposure to Ringer solution have greater effect on the physicochemical properties rather than on the mechanical ones. Conclusion: It was found that sterilization, and exposure to Ringer’s solution greatly affect the change of physicochemical properties rather than mechanical properties for both nitrocarburized layers and the Ti-6Al-7Nb alloy of mechanically polished surface.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2017, 19, 4; 181-188
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The ability of S.aureus to form biofilm on the Ti-6Al-7Nb scaffolds produced by Selective Laser Melting and subjected to the different types of surface modifications
    Autorzy:
    Szymczyk, P.
    Junka, A.
    Ziółkowski, G.
    Smutnicka, D.
    Bartoszewicz, M.
    Chlebus, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/306293.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    SLM
    micro-CT
    scaffolds
    Ti-6Al-7Nb alloy
    orthopedics
    S.aureus
    ortopedia
    Opis:
    The Gram-positive coccus, Staphylococcus aureus, is the leading etiologic agent of limb and life-threatening biofilm-related infections in the patients following the orthopaedic implantations. The aim of the present paper is to estimate the ability of S. aureus to form biofilm on titanium alloy (Ti-6Al-7Nb) scaffolds produced by Selective Laser Melting (SLM) and subjected to the different types of surface modifications, including ultrasonic cleaning and chemical polishing. The results obtained indicate significantly the decreased ability of S.aureus to form biofilm on the surface of scaffolds subjected to the chemical polishing in comparison to the scaffolds cleaned ultrasonically. The data provided can be useful for future applications of the SLM technology in production of Ti-6Al-7Nb medical implants.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2013, 15, 1; 69-76
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of post-process operations on the mechanical properties of titanium alloy Ti-6Al-7Nb, produced by selective laser melting
    Autorzy:
    Karoluk, M.
    Chlebus, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1190025.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    selektywne spiekanie laserowe
    SLM
    stop tytanu
    Ti-6Al-7Nb
    selective laser melting
    post-process operations
    titanium alloy
    Opis:
    Even though selective laser melting (SLM) has been available for more than a decade, during few last years the interest in this technology has grown extremely. SLM technology allows to fabricate fully functional and complex metal objects, layer by layer, via selective melting of material using laser beam. However, producing object by melting thin layers of material causes conditions of fast heat removal. This phenomenon leads to equilibrium microstructures, accompanied by the residual stresses which cause the decrease of mechanical properties. The following paper presents the result of research in the field of the influence of the post-process operations, such as machining and heat treatment, on the mechanical properties of alloy Ti-6Al-7Nb build by SLM.
    Źródło:
    Interdisciplinary Journal of Engineering Sciences; 2015, 3, 1; 16--19
    2300-5874
    Pojawia się w:
    Interdisciplinary Journal of Engineering Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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