Browsing by Subject "aluminum"

Now showing 1 - 7 of 7

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Analiza stanu powierzchni aluminium po procesie piaskowania
(Data obrony: 2021-01-26) Chudzicki, Krzysztof
Wydział Inżynierii Metali i Informatyki Przemysłowej
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Anodowe roztwarzanie glinu w roztworach etanol-woda jako metoda otrzymywania nanocząstek
(Data obrony: 2013-07-05) Waliczek, Anna Maria
Wydział Odlewnictwa
Access status: Open Access ,
Possibility of Al-Cu composite manufacturing from fine metal fractions by recycling process
(Wydawnictwa AGH, 2017) Wzorek, Łukasz; Wędrychowicz, Mateusz; Wiewióra, Marcel; Noga, Piotr; Skrzekut, Tomasz; Wzorek, Agata; Łyp-Wrońska, Katarzyna
Plastic consolidation of highly fragmented materials is a cost-effective way to recover aluminum alloys. In this process, metal in the form of chips, powders, or ribbons omits the melting step that is typical for conventional scrap recycling, by that, it significantly reduces both energy expenses and material losses. By reducing the number of operations, the cost of labor and expenditures on environmental protection can be decreased. In addition, the solid bonding of metals in highly dispersed forms allows us to create heterogeneous structures that could be difficult to obtain in traditional processes. In the present study, the influence of the addition of Cu powder (99.7 wt.%) on the bonding quality of aluminum powder (99.7 wt.%) during hot extrusion is being examined. The examined materials contained aluminum powder with the addition of 5 wt.% of Cu powder. The mixture of these powders were cold compacted to produce an 80-mm-long charge for the extrusion process. Plastic consolidation was conducted at three different temperatures: 300°, 350°, and 400°C. As a result, rods 8 mm in diameter were obtained. Mechanical tests combined with microstructure observations and electrical conductivity tests were performed for the as-extruded materials.
Access status: Open Access ,
Research on new Al-Ag-Mo alloys dedicated to wire applications in overhead power lines
(AGH University Press, 2023) Grzebinoga, Justyna; Mamala, Andrzej; Ściężor, Wojciech; Kowal, Radosław
The latest research work in the field of electric power systems focuses on the development of new wire materials which will allow the increase of the transmission capacity of power lines currently in use. The reason for this research was the often limited possibilities of continuous and failure-free transmission of electricity. In this paper, the authors present research on a new aluminium-based alloy dedicated for use as a conductive braid in the HTLS cable group. There are many technical solutions for this group of cables on the market, although they are solutions with a number of disadvantages, ranging from their high price, various operational shortcomings, complicated installation techniques, and ending with the risk of monopolistic practices, which is related to the inability to attract several competitive suppliers. The main aim of the research was to develop a new alloy based on aluminium with the addition of silver and molybdenum dedicated for use in special overhead power cables. Experimental research on new materials focused on obtaining the necessary knowledge to produce an overhead wire from these alloys with higher current carrying capacity in relation to the currently used conventional wire materials based on aluminium.
Access status: Open Access ,
Trwałość spawanych miejsc aluminotermicznie
(Bibljoteka Akademji Górniczej, 1926) Feszczenko-Czopiwski, Iwan
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Wpływ dodatku niewielkich ilości aluminium na mikrostrukturę i właściwości trybologiczne w żeliwie wysokochromowym
(Data obrony: 2017-07-17) Lewicki, Bartłomiej
Wydział Odlewnictwa
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Wpływ metodyki opróbowania na wyniki oznaczeń miedzi i glinu w wodach podziemnych i wodach wodociągowych
(Data obrony: 2014-09-15) Nowak, Karolina
Wydział Geologii, Geofizyki i Ochrony Środowiska
The subject of this study is to evaluate the influence of sampling methodology on the results of determination of selected metals (copper and aluminum) in groundwater and in water intended for human consumption - based on the study. The study presents the characteristics of the occurrence of selected metals in soils, surface water, groundwater and water intended for human consumption. Characterized were sources of drinking water for the city of Krakow and the water supply network. Presented aquifers in Krakow and groundwater chemistry. Discusses were sampling methodology of water intended for human consumption and groundwater, which was used during the research and presents the results. On that basis assessed the influence of sampling methodology on the results of aluminum and cooper, and suggested the need for more research.