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Wyszukujesz frazę "Cwiek, J" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Influence of primary silicon precipitates on anodized aluminum alloys surface layer properties
Autorzy:
Labisz, K.
Konieczny, J.
Wierzbicki, Ł.
Ćwiek, J.
Butor, A.
Powiązania:
https://bibliotekanauki.pl/articles/374771.pdf
Data publikacji:
2018
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
anodization
aluminium alloys
microstructure
surface layer
wear resistance
anodowanie
stopy aluminium
mikrostruktura
warstwa wierzchnia
odporność na zużycie
Opis:
In this work, we presented the influence of the anodizing method and parameters, as well as the chemical composition of the used aluminium alloys on the properties and microstructure of the anodic layer produced on aluminium alloys, in particular on the size and morphology of the primary silicon precipitates and the homogeneity of the resulting oxide coating. Aluminium alloys AlSi8 and AlSi12, produced using the die-casting method and subsequently subjected to anodic oxidation were used as test material. The microstructure of the obtained surface layer was analyzed by taking into account the primary silicon precipitates. The results of the hardness and abrasive wear test also show the influence of anodizing and electrolyte parameters on the structure and properties of the tested aluminium alloys.
Źródło:
Transport Problems; 2018, 13, 2; 111-120
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructure of Archaeological 17th Century Cast Copper Alloys
Autorzy:
Konieczny, J.
Labisz, K.
Głowik-Łazarczyk, K.
Ćwiek, J.
Wierzbicki, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/382152.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
metallography
archaeometallurgy
microstructure
excavations
phase analysis
metalografia
archaeometalurgia
mikrostruktura
wykopaliska
Opis:
In Poland, researchers have a very strong interest in archaeometallurgy, which, as presented in classical works, focuses on dating artefacts from the prehistoric and early medieval periods in the form of cast iron and copper castings. This study, extending the current knowledge, presents the results of a microstructure investigation into the findings from the Modern era dating back to the late Middle Ages. The investigated material was an object in the form of a heavy solid copper block weighing several kilograms that was excavated by a team of Polish archaeologists working under the direction of Ms Iwona Młodkowska-Przepiórowska during works on the marketplace in the city of Czestochowa during the summer of 2009. Pre-dating of the material indicates the period of the seventeenth century AD. The solid copper block was delivered in the form of a part shaped like a bell, named later in this work as a “kettlebell”. To determine the microstructure, the structural components, chemical composition, and homogeneity, as well as additives and impurities, investigations were carried out using light microscopy, scanning electron microscopy including analysis of the chemical composition performed in micro-areas, and qualitative X-ray phase analysis in order to investigate the phase composition. Interpretation of the analytical results of the material’s microstructure will also help modify and/or develop new methodological assumptions to investigate further archaeometallurgical exhibits, throwing new light on and expanding the area of knowledge of the use and processing of seventeenth-century metallic materials.
Źródło:
Archives of Foundry Engineering; 2017, 17, 2; 190-196
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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