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    Wyświetlanie 1-7 z 7
    Tytuł:
    Manufacturing of Porous Ceramic Preforms Based on Halloysite Nanotubes (Hnts)
    Autorzy:
    Kujawa, M.
    Dobrzański, L. A.
    Matula, G.
    Kremzer, M.
    Tomiczek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/353563.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    metal matrix composites (MMC)
    halloysite nanotubes
    porous ceramic preforms
    Opis:
    The aim of this study was to determine the influence of manufacturing conditions on the structure and properties of porous halloysite preforms, which during pressure infiltration were soaked with a liquid alloy to obtain a metal matrix composite reinforced by ceramic, and also to find innovative possibilities for the application of mineral nanotubes obtained from halloysite. The method of manufacturing porous ceramic preforms (based on halloysite nanotubes) as semi-finished products that are applicable to modern infiltrated metal matrix composites was shown. The ceramic preforms were manufactured by sintering of halloysite nanotubes (HNT), Natural Nano Company (USA), with the addition of pores and canals forming agent in the form of carbon fibres (Sigrafil C10 M250 UNS SGL Group, the Carbon Company). The resulting porous ceramic skeletons, suggest innovative application capabilities mineral nanotubes obtained from halloysite.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 2B; 917-922
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aluminium AlMg1SiCu Matrix Composite Materials Reinforced with Halloysite Particles
    Materiały kompozytowe o osnowie stopu aluminium AlMg1SiCu wzmacniane cząstkami haloizytowymi
    Autorzy:
    Dobrzański, L. A.
    Tomiczek, B.
    Pawlyta, M.
    Król, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/356380.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminium matrix composites
    halloysite nanotubes
    mechanical alloying
    hot extrusion
    kompozyty z osnową aluminium
    nanorurki haloizytowe
    wyciskanie na gorąco
    mechaniczne stopowanie
    Opis:
    In this work selected results of investigations of the new AlMg1SiCu matrix composite materials reinforced with halloysite particles manufactured by powder metallurgy techniques including mechanical alloying and hot extrusion are present. The composite materials obtained as a result of mechanical synthesis and hot extrusion are characterized with the structure of evenly distributed, disperse reinforcing phase particles in fine-grain matrix of AlMg1SiCu alloy, facilitate the obtainment of higher values of strength properties, compared to the initial alloy. The nanostructural composite materials reinforced with halloysite nanotubes with 15 mass % share are characterized by almost twice as higher micro-hardness - compared to the matrix material.
    W pracy przedstawiono wybrane wyniki badań materiałów kompozytowych o osnowie stopu AlMg1SiCu wzmacnianych cząstkami hałoizytowymi wytworzonymi z wykorzystaniem metod metalurgii proszków, w tym mechanicznej syntezy i wyciskania na gorąco. Otrzymane w procesie mechanicznej syntezy i wyciskania na gorąco materiały kompozytowe charakteryzują się strukturą równomiernie rozłożonych, rozdrobnionych cząstek fazy wzmacniającej w drobnoziarnistej osnowie stopu AlMg1SiCu, sprzyjającą osiąganiu wyższych wartości właściwości wytrzymałościowych w porównaniu do stopu wyjściowego. Wytworzone nanostrukturalne materiały kompozytowe wzmacniane nanorurkami hałoizytowymi o udziale masowym 15% charakteryzują się - w porównaniu do materiału osnowy - ponad dwukrotnie większą mikrotwardością.
    Źródło:
    Archives of Metallurgy and Materials; 2014, 59, 1; 335-338
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect Of Milling Time On Microstructure Of AA6061 Composites Fabricated Via Mechanical Alloying
    Wpływ czasu mielenia na mikrostrukturę kompozytów o osnowie stopu aluminium 6061 wytworzonych przez mechaniczne stopowanie
    Autorzy:
    Tomiczek, B.
    Pawlyta, M.
    Adamiak, M.
    Dobrzański, L. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/353314.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminium matrix composites
    halloysite nanotubes
    mechanical milling
    hot extrusion
    kompozyty z osnową aluminiową
    nanorurki haloizytowe
    mielenie mechaniczne
    wytłaczanie na gorąco
    Opis:
    The aim of this work is to determine the effect of manufacturing conditions, especially milling time, on the microstructure and crystallite size of a newly developed nanostructural composite material with the aluminium alloy matrix reinforced with halloysite nanotubes. Halloysite, being a clayey mineral of volcanic origin, is characterized by high porosity and large specific surface area. Thus it can be used as an alternative reinforcement in metal matrix composite materials. In order to obtain this goal, composite powders with fine microstructures were fabricated using high-energy mechanical alloying, cold compacting and hot extrusion techniques. The obtained composite powders of aluminium alloy reinforced with 5, 10 and 15 wt% of halloysite nanotubes were characterized with SEM, TEM and XRD analysis. It has been proven that the use of mechanical alloying leads to a high degree of deformation, which, coupled with a decreased grain size below 100 nm and the dispersion of the refined reinforcing particles–reinforces the material very well.
    Celem niniejszej pracy było określenie wpływu warunków wytwarzania, w szczególności czasu mielenia, na strukturę i wielkość krystalitów nowo opracowanych nanostrukturalnych materiałów kompozytowych o osnowie stopów aluminium wzmacnianych nanorurkami haloizytowymi. Haloizyt, będący minerałem ilastym pochodzenia wulkanicznego, charakteryzuje się dużą porowatością, dużą powierzchnią właściwą, i może stanowić alternatywne wzmocnienie metalowych materiałów kompozytowych. W tym celu przy użyciu wysokoenergetycznego mechanicznego stopowania w młynie kulowym wytworzono rozdrobnione i trwale połączone proszki kompozytowe, które następnie poddano zagęszczaniu na zimno i wyciskaniu na gorąco. Tak opracowane materiały kompozytowe o udziale masowym haloizytowego wzmocnienia 5, 10, 15% zbadano metodami skaningowej i transmisyjnej mikroskopii elektronowej oraz rentgenowskiej analizy fazowej. Stwierdzono, że wywołane mechanicznym stopowaniem silne odkształcenie plastyczne i zmniejszenie rozmiaru ziarna poniżej 100 nm oraz dyspersja haloizytowych cząstek wzmacniających wpłynęła na znaczne umocnienie materiałów kompozytowych.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 2A; 789-793
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Manufacturing powders of metals, their alloys and ceramics and the importance of conventional and additive technologies for products manufacturing in Industry 4.0 stage
    Autorzy:
    Dobrzański, L. A.
    Dobrzański, L. B.
    Dobrzańska-Danikiewicz, A. D.
    Kraszewska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818518.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    powder engineering
    powders manufacturing methods
    manufacturing technologies using powders
    dendrological matrix of the technologies potential and attractiveness
    holistic augmented Industry 4.0 model
    inżynieria proszkowa
    metody wytwarzania proszków
    technologie wytwarzania z użyciem proszków
    Opis:
    Purpose: The paper is a literature review indicating the importance of powder engineering in the modern stage of Industry 4.0 development. 47 technologies for the manufacturing and use the powders of metal and their alloys and ceramic in the manufacturing of products are indicated. All those technologies were compared in terms of their potential and attractiveness, pointing to their development trends. The focus was solely on powder production methods. Other technologies will be discussed in other papers in the powder engineering cycle. Design/methodology/approach: The authors' considerations are based on an extensive literature study and the results of the authors' previous studies and empirical work. In order to compare the analyzed technologies, the methodology of knowledge engineering are used, including the own method of contextual matrices for comparative analysis of a large set of technologies by presenting them on a dendrological matrix. Findings: The most interesting intellectual achievements contained in the paper include presentations of the authors' original concepts regarding the augmentation of the Industry 4.0 model. Material processing technologies occupy an important place in it, among them powder engineering technologies, both conventional and additive. The most attractive and promising development technologies in powder engineering are identified. Originality/value: The originality of the paper is associated with the novelty of the approach to analysing powder engineering, an indication of its importance for the development of the Industry 4.0 idea, where progress does not depend only on the development of IT technologies. It is also not true that from among technologies only additive technologies play a key role. Using avant-garde analyses in the field of knowledge engineering, the most avant-garde technologies of powder engineering are pointed out.
    Źródło:
    Archives of Materials Science and Engineering; 2020, 102, 1; 13--41
    1897-2764
    Pojawia się w:
    Archives of Materials Science and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Manufacturing technologies thick-layer coatings on various substrates and manufacturing gradient materials using powders of metals, their alloys and ceramics
    Autorzy:
    Dobrzański, L. A.
    Dobrzański, L. B.
    Dobrzańska-Danikiewicz, A. D.
    Powiązania:
    https://bibliotekanauki.pl/articles/367488.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    powder engineering
    manufacturing of powder products
    manufacturing technologies thick-layer coatings using powders
    dendrological matrix of the technologies potential and attractiveness
    holistic augmented Industry 4.0 model
    inżynieria proszkowa
    produkcja produktów proszkowych
    technologie wytwarzania
    powłoka grubowarstwowa
    matryca dendrologiczna
    przemysł 4.0
    Opis:
    Purpose: The paper is a comprehensive review of the literature on manufacturing technologies thick-layer coatings on various substrates and manufacturing gradient materials using powders of metals, their alloys and ceramics. Design/methodology/approach: Extensive literature studies on manufacturing technologies thick-layer coatings on various substrates and manufacturing gradient materials using powders of metals, their alloys and ceramics have been carried out. The paper is illustrated with examples of various structure images obtained as part of research of engineering materials made by authors with powders. By using knowledge engineering methods, development perspectives of individual technologies were indicated. Findings: The manufacturing technologies thick-layer coatings on various substrates and manufacturing gradient materials using powders of metals, their alloys and ceramics as the advanced digital production (ADP) technologies are proves the highest possible potential and relatively good attractiveness, as well as their fully exploited attractiveness or substantial development opportunities in this respect. Originality/value: According to augmented holistic Industry 4.0 model, many materials processing technologies and among them manufacturing technologies thick-layer coatings on various substrates and manufacturing gradient materials using powders of metals, their alloys and ceramics are becoming very important among product manufacturing technologies. They are an essential part of powder engineering.
    Źródło:
    Journal of Achievements in Materials and Manufacturing Engineering; 2020, 99, 1; 14-41
    1734-8412
    Pojawia się w:
    Journal of Achievements in Materials and Manufacturing Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Additive and hybrid technologies for products manufacturing using powders of metals, their alloys and ceramics
    Autorzy:
    Dobrzański, L. A.
    Dobrzański, L. B.
    Dobrzańska-Danikiewicz, A. D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818519.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    powder engineering
    manufacturing of powder products
    hybrid technologies using powders
    additive manufacturing technologies using powders
    dendrological matrix of the technologies potential and attractiveness
    holistic augmented Industry 4.0 model
    inżynieria proszkowa
    produkcja wyrobów proszkowych
    technologie hybrydowe z wykorzystaniem proszków
    technologie wytwarzania przyrostowego z wykorzystaniem proszków
    Opis:
    Purpose: The paper is a comprehensive review of the literature on additive and hybrid technologies for products manufacturing using powders of metals, their alloys and ceramics. Design/methodology/approach: Extensive literature studies on conventional powder engineering technologies have been carried out. By using knowledge engineering methods, development perspectives of individual technologies were indicated. Findings: The additive and hybrid technologies for products manufacturing using powders of metals, their alloys and ceramics as the advanced digital production (ADP) technologies are located in the two-quarters of the dendrological matrix of technologies "wide-stretching oak" and "rooted dwarf mountain pine" respectively. It proves their highest possible potential and attractiveness, as well as their fully exploited attractiveness or substantial development opportunities in this respect. Originality/value: According to augmented holistic Industry 4.0 model, many materials processing technologies and among them additive and hybrid technologies for products manufacturing using powders of metals, their alloys and ceramics are becoming very important among product manufacturing technologies. They are an essential part not only of powder engineering but also of the manufacturing development according to the concept of Industry 4.0.
    Źródło:
    Archives of Materials Science and Engineering; 2020, 102, 2; 59--85
    1897-2764
    Pojawia się w:
    Archives of Materials Science and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Role of materials design in maintenance engineering in the context of industry 4.0 idea
    Autorzy:
    Dobrzański, L. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/368329.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    maintenance
    4.0 stage of economy
    industry development
    materials development
    designing material conservation and manufacturing 3MD
    selective laser sintering
    implant-scaffold
    laser texturization
    multicrystalline silicon cells
    cracking counteraction
    austenitic steel
    TWIP steels
    TRIP steel
    wear-resistant
    CVD coatings
    PVD coatings
    cutting tool materials
    Al alloy matrix nanocomposites
    carbon nanotubes
    graphene
    dye synthesised solar cells
    ALD coatings
    dentistry
    photovoltaics
    konserwacja
    przemysł 4.0
    rozwój przemysłu
    rozwój materiałów
    selektywne spiekanie laserowe
    rusztowanie implantowe
    teksturyzacja
    ogniwa krzemowe
    pękanie stali
    stal austenityczna
    stal TWIP
    stal TRIP
    odporność na ścieranie
    powłoki CVD
    powłoki PVD
    narzędzia skrawające
    nanokompozyty
    osnowa aluminiowa
    nanorurki węglowe
    grafen
    ogniwo słoneczne
    powłoki ALD
    stomatologia
    fotowoltaika
    Opis:
    Purpose: The paper presents the issues of designing the maintenance of materials and products in accordance with the idea of Industry 4.0. The author's views on the need for augmentation of the Industry 4.0 model were also presented, as well as the author's original concept that hybrid activities in predictive maintenance and condition-based maintenance should be preceded by designing material, maintenance & manufacturing 3MD at the stage of the product's material designing and technological designing. The 3MD approach significantly reduces the frequency of assumed actions, procedures and resources necessary to remain the condition of this product for the longest possible time, enabling it to perform the designed working functions. Examples of own advanced research on several selected, newly developed materials, used in very different areas of application, confirmed the validity of the scientific hypothesis and the relationship between the studied phenomena and structural effects and the working functions of products and their maintenance and indicated that material design is one of the most important elements guaranteeing progress production at the stage of Industry 4.0 of the industrial revolution. Design/methodology/approach: The author's considerations are based on an extensive literature study and the results of the author's previous study and empirical work. Each of the examples given required the use of a full set of research methods available to modern material engineering, including HRTEM high-resolution transmission electron microscopy. Findings: The most interesting intellectual achievements contained in the paper include presentations of the author's original concepts regarding the augmentation of the Industry 4.0 model, which has been distributed so far, which not only requires augmentation but is actually only one of the 4 elements of the technology platform of the extended holistic model of current industrial development, concerning cyber-IT production aided system. The author also presents his own concept for designing material, maintenance and manufacturing 3MD already at the stage of material and technological design of the product, eliminating many problems related to product maintenance, even before they are manufactured and put into exploitation. Detailed results of detailed structural researches of several selected avant-garde engineering materials and discussion of structural changes that accompanying their manufacturing and/or processing are also included. Originality/value: The originality of the paper is associated with the novelty of the approach to analysing maintenance problems of materials and products, taking into account the requirements of the contemporary stage of Industry 4.0 development. The value of the paper is mainly associated with the presentation of original issues referred to as findings, including the concept of augmentation of the Industry 4.0 model and the introduction and experimental confirmation of the idea by designing material, maintenance and manufacturing 3MD.
    Źródło:
    Journal of Achievements in Materials and Manufacturing Engineering; 2019, 96, 1; 12-49
    1734-8412
    Pojawia się w:
    Journal of Achievements in Materials and Manufacturing Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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