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Wyszukujesz frazę "quality of graphite" wg kryterium: Temat

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    Wyświetlanie 1-3 z 3
    Tytuł:
    The effect of changing graphitization temperature toward bio-graphite from Palm Kernel Shell
    Autorzy:
    Othman, Rapidah
    Kamal, Afiqah Samsul
    Jabarullah, N. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1839526.pdf
    Data publikacji:
    2021
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    produkcja grafitu
    grafitowy materiał węglowy
    jakość grafitu
    production of graphite
    quality of graphite
    graphite carbon material
    Opis:
    This paper focuses on the relationship between heat treatment temperature toward structural transformation from amorphous carbon to highly graphitic carbon material during a production stage.The following report discusses a simple strategy to convert the palm kernel shell (PKS) into highly crystalline, high quality graphite via simple two-step process. The production involves impregnation of catalyst followed by thermal treatment. Both XRD and Raman spectroscopy allowed the observation of microstructural change of the prepared sample at temperature ranging from 1000°C to 1400°C using Ferum catalyst. From XRD pattern it can be observed that as graphitization temperature increased, the degree of graphitization also increased. Overall sample prepared at higher temperature 1400°C shows a higher degree of graphitization. PKS sample graphitized at 1400°C with the aid of Ferum catalyst shows a sharp intensified peak at 2θ = 26.5° reflecting formation of highly crystalline graphite structure. Raman spectrum also suggests similar results to XRD in which PKS-1400 shows the presence of large amount of graphitic structure as the value of (Id/Ig) ratio is lower than in other samples. HRTEM analysis visibly shows define lattice fringe, which further confirms the structural transformation from amorphous to highly ordered graphitic carbon structure. Overall, good quality graphitic carbon structure from Palm Kernel shell was succesfully synthesised via utilization of PKS, Ferum catalsyt and heat treatment method.
    Źródło:
    Production Engineering Archives; 2021, 27, 2; 124-129
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of changing graphitization temperature toward bio-graphite from Palm Kernel Shell
    Autorzy:
    Othman, Rapidah
    Kamal, Afiqah Samsul
    Powiązania:
    https://bibliotekanauki.pl/articles/1839543.pdf
    Data publikacji:
    2021
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    produkcja grafitu
    grafitowy materiał węglowy
    jakość grafitu
    production of graphite
    quality of graphite
    graphite carbon material
    Opis:
    This paper focuses on the relationship between heat treatment temperature toward structural transformation from amorphous carbon to highly graphitic carbon material during a production stage.The following report discusses a simple strategy to convert the palm kernel shell (PKS) into highly crystalline, high quality graphite via simple two-step process. The production involves impregnation of catalyst followed by thermal treatment. Both XRD and Raman spectroscopy allowed the observation of microstructural change of the prepared sample at temperature ranging from 1000°C to 1400°C using Ferum catalyst. From XRD pattern it can be observed that as graphitization temperature increased, the degree of graphitization also increased. Overall sample prepared at higher temperature 1400°C shows a higher degree of graphitization. PKS sample graphitized at 1400°C with the aid of Ferum catalyst shows a sharp intensified peak at 2θ = 26.5° reflecting formation of highly crystalline graphite structure. Raman spectrum also suggests similar results to XRD in which PKS-1400 shows the presence of large amount of graphitic structure as the value of (Id/Ig) ratio is lower than in other samples. HRTEM analysis visibly shows define lattice fringe, which further confirms the structural transformation from amorphous to highly ordered graphitic carbon structure. Overall, good quality graphitic carbon structure from Palm Kernel shell was succesfully synthesised via utilization of PKS, Ferum catalsyt and heat treatment method.
    Źródło:
    Production Engineering Archives; 2021, 27, 2; 124-129
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Structural Parameters - the Shape of Graphite and Matrix on Change of Ultrasonic Wave Propagation Rate and Value of Attenuation in Graphitic Cast Irons
    Autorzy:
    Belan, Juraj
    Tillová, Eva
    Uhríčik, Milan
    Pastierovičová, Lucia
    Powiązania:
    https://bibliotekanauki.pl/articles/26081550.pdf
    Data publikacji:
    2023
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    badanie ultradźwiękowe
    zapewnienie jakości żeliwa
    grafitowy kształt
    współczynnik perlitu i ferrytu
    ultrasonic investigation
    quality assurance of cast iron
    graphite shape
    pearlite and ferrite ratio
    quantitative evaluation of graphite and matrix
    Opis:
    Despite the tendency of the current industry, especially the automotive industry, it is to use modern, light and super-strong materials based on Al or HSLA steels, the application of classic materials such as cast iron still makes sense, especially concerning price and excellent castability. The article presents one of the possible ways of using the ultrasonic non-destructive method in quality control and simpli-fication of the identification of the type of cast iron concerning the change of parameters of ultrasound propagation in materials. The main criteria for assessing the quality and determining the type of graphite cast iron were considered to be the rate of propagation of ultrasound - cL and the value of attenuation , which vary depending on the shape of the graphite and matrix. Graphitic cast irons with different graphite shapes (lamellar, vermicular, and globular shapes) and a matrix with different ferrite/perlite ratios were used as experimental material. Along with the ultrasonic tests, a metallographic analysis was also performed to quantify the microstructure of cast irons.
    Źródło:
    Production Engineering Archives; 2023, 29, 1; 23--27
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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