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    Wyświetlanie 1-2 z 2
    Tytuł:
    Characterization of Ceramic Particle Reinforced Titanium Composite Produced Via Powder Metallurgy
    Autorzy:
    Angel, D. A.
    Miko, T.
    Benke, M.
    Gacsi, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/352651.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    powder metallurgy
    titanium
    ceramic particle
    nanocomposite
    mechanical property
    Opis:
    Nowadays, titanium is one of the most popular materials for aeronautical applications due to its good corrosion resistance, formability and strength. In this paper, rutile reinforced titanium matrix composites were produced via powder metallurgy. The steps included high energy ball milling of raw titanium and rutile powders in a planetary ball mill, which was followed by cold-pressing and sintering without external pressure. For the characterization of the milled powders and the sintered composites, scanning electron microscope, X-ray diffraction and compressive strength examinations were carried out. The results showed that the rutile has a strengthening effect on the titanium matrix. 1 wt% rutile increased the compressive strength compared to the raw titanium. Increasing the milling time of the metal matrix decreased the compressive strength values.
    Źródło:
    Archives of Metallurgy and Materials; 2020, 65, 2; 515-519
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prediction of wheat grain yield by measuring root electrical capacitance at anthesis
    Autorzy:
    Cseresnyes, I.
    Miko, P.
    Kelemen, B.
    Fuzy, A.
    Paradi, I.
    Takacs, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2083056.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    aboveground biomass
    intercropping
    nonintrusive
    root methods
    saturation electrical capacitance
    root system
    size
    Opis:
    This methodological study evaluated the efficiency of predicting aboveground biomass and grain yield in fieldgrown winter wheat by measuring the saturation root electrical capacitance at anthesis. Three cultivars were grown over a threeyear period as sole crops and intercropped with winter pea at halved wheat density. The root capacitance readings were converted into saturation root electrical capacitance using the relevant soil water content, according to an empirical function. At plant scale, saturation root electrical capacitance at anthesis showed a significant (p < 0.001) linear regression with the total aboveground biomass (R2: 0.653-0.765) and grain yield (R2: 0.585-0.686) at maturity for each cultivar. At stand scale, both the mean saturation root electrical capacitance and shoot dry mass at anthesis and grain yield varied over the years, and were consistently higher for the intercrops compared to the sole crops. The relative increase in saturation root electrical capacitance due to intercropping corresponded with the changes in shoot dry mass and grain yield, especially in dry years. Saturation root electrical capacitance was significantly correlated with shoot dry mass (R2: 0.714-0.899) and grain yield (R2: 0.742-0.877) for each cultivar across all cropping systems and years. In conclusion, by mitigating the soil water content effect, the measurement of saturation root electrical capacitance at anthesis is adequate to forecast grain yield and cultivar response to a changing environment.
    Źródło:
    International Agrophysics; 2021, 35, 2; 159-165
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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