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    Wyświetlanie 1-4 z 4
    Tytuł:
    Fabrication and Pore Properties of SUS316L Membrane with Double-Layered Pore Structures by Wet Powder Spraying
    Autorzy:
    Lee, Min-Jeong
    Kim, Hyeon-Ju
    Park, Manho
    Yun, Jung-Yeul
    Powiązania:
    https://bibliotekanauki.pl/articles/2174566.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wet powder spraying process
    double-layered pore structures
    powder shape
    spherical
    flake
    Opis:
    In this study, a SUS316L membrane having double layered pore structures was fabricated, and the pore characteristics were analyzed after coating with a spherical powder and a flake-shaped powder on a disk-shaped SUS316L support using a wet powder spraying process. The thickness of the coated layer was checked using an optical microscope, and air permeability was measured using a capillary flow porometer. When the coating amount was similar, the fine porous layer prepared using flake powder was thicker and showed higher porosity. In the case of a similar thickness, the case of using flake powder was half of the amount of spherical powder used. Therefore, it was confirmed that it is possible to manufacture a metal membrane having a high filter efficiency even with a small coating amount when using the flake powder.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 4; 1531--1534
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sintering and Microstructures of SUS 316L Powder Produced by 3D Printing Process
    Autorzy:
    Kim, W. J.
    Nguyen, H.-H.
    Kim, H. Y.
    Nguyen, M.-T.
    Park, H. S.
    Kim, J.-C.
    Powiązania:
    https://bibliotekanauki.pl/articles/356018.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    stainless steel
    3D printing
    selective laser sintering
    SUS 316L
    flake powder
    Opis:
    Selective laser sintering (SLS) is a type of laminating sintering technique, using CO2 laser with (metal, polymer, and ceramic) powders. In this result, the flake SUS 316L was used to achieve a high porous product, and compare to spherical type. After SLS, the porosity of flake-type sample with 34% was quite higher than that of the spherical-type one that had only 11%. The surface roughness of the flake SLS sample were also investigated in both inner and surface parts. The results show that the deviation of the roughness of the surface part is about 64.40μm, while that of the internal one was about 117.65μm, which presents the containing of high porosity in the uneven surfaces. With the process using spherical powder, the sample was quite dense, however, some initial particles still remained as a result of less energy received at the beneath of the processing layer.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 2B; 1215-1218
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On Degradation of Cast Iron Surface - Protective Paint Coat Joint
    Autorzy:
    Tupaj, M.
    Orłowicz, A. W.
    Mróz, A.
    Bąk, G.
    Abram, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/381862.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    thin-wall casting
    flake graphite
    grey cast iron
    corrosion
    protective paint coat
    odlewy cienkościenne
    grafit
    żeliwo szare
    korozja
    powłoka ochronna
    Opis:
    The paper is a presentation of a study on issues concerning degradation of protective paint coat having an adverse impact on aesthetic qualities of thin-walled cast-iron castings fabricated in furan resin sand. Microscopic examination and microanalyses of chemistry indicated that under the coat of paint covering the surface of a thin-walled casting, layers of oxides could be found presence of which can be most probably attributed to careless cleaning of the casting surface before the paint application process, as well as corrosion pits evidencing existence of damp residues under the paint layers contributing to creation of corrosion micro-cells.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 3; 133-136
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Coefficient of Friction of a Brake Disc-Brake Pad Friction Couple
    Autorzy:
    Orłowicz, A. W.
    Mróz, M.
    Wnuk, G.
    Markowska, O.
    Homik, W.
    Kolbusz, B,
    Powiązania:
    https://bibliotekanauki.pl/articles/380628.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    flake graphite
    cast iron
    brake discs
    abrasive wear resistance
    friction coefficient
    grafit płatkowy
    żeliwo
    tarcza hamulcowa
    odporność na ścierania
    współczynnik tarcia
    Opis:
    The paper concerns evaluation of the coefficient of friction characterising a friction couple comprising a commercial brake disc cast of flake graphite grey iron and a typical brake pad for passenger motor car. For the applied interaction conditions, the brake pressure of 0.53 MPa and the linear velocity measured on the pad-disc trace axis equalling 15 km/h, evolution of the friction coefficient μ values were observed. It turned out that after a period of 50 minutes, temperature reached the value 270°C and got stabilised. After this time interval, the friction coefficient value also got stabilised on the level of μ = 0.38. In case of a block in its original state, stabilisation of the friction coefficient value occurred after a stage in the course of which a continuous growth of its value was observed up to the level μ = 0.41 and then a decrease to the value μ = 0.38. It can be assumed that occurrence of this stage was an effect of an initial running-in of the friction couple. In consecutive abrasion tests on the same friction couple, the friction coefficient value stabilisation occurred after the stage of a steady increase of its value. It can be stated that the stage corresponded to a secondary running-in of the friction couple. The observed stages lasted for similar periods of time and ended with reaching the stabile level of temperature of the disc-pad contact surface.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 4; 196-200
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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