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Wyszukujesz frazę "Białostocka, Anna" wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Tribological properties of the FeNi alloys electrodeposited with and without external magnetic field assistance
Autorzy:
Białostocka, Anna Maria
Klekotka, Marcin
Klekotka, Urszula
Kalska-Szostko, Beata
Powiązania:
https://bibliotekanauki.pl/articles/2200931.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
electrodeposition
magnetic fields
Cu substrate
CuZn substrate
FeNi coatings
microhardness
roughness
friction
wear
Opis:
The hereby work presents the tribological properties of the iron-nickel alloys and their dependence on the microstructure and thickness of the probes as well as the presence of an external magnetic field during the synthesis. Coatings were electroplated on the brass and copper metallic substrates using galvanostatic deposition in the same electrochemical bath condition (Fe and Ni sulfates) and the electric current density. The surface morphology of the films was observed by Scanning Electron Microscopy. The average composition of all FeNi coatings was measured using Energy Dispersive X-ray Spectroscopy. Tribo-mechanical properties such as microhardness, roughness, and friction coefficient were determined in the obtained structures. The morphology and tribologial properties of the FeNi coatings clearly depend on both the substrate (Cu, CuZn) itself and the presence of an external magnetic field (EMF) applied during the deposition process.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 4; 687--694
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Substrates with different magnetic properties versus iron-nickel film electrodeposition
Autorzy:
Białostocka, Anna M.
Klekotka, Marcin
Klekotka, Urszula
Żabiński, Piotr R.
Kalska-Szostko, Beata
Powiązania:
https://bibliotekanauki.pl/articles/31342692.pdf
Data publikacji:
2023
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
electrodeposition
magnetic field
magnetohydrodynamics
substrate
thin films
iron-nickel alloys
elektroosadzanie
pole magnetyczne
magnetohydrodynamika
substrat
cienkie warstwy
stopy żelazo-nikiel
Opis:
The hereby work presents the iron-nickel alloys electroplated on the different metallic substrates (aluminium, silver, brass) using galvanostatic deposition, with and without presence of the external magnetic field (EMF). The films were obtained in the same electrochemical bath composition - mixture of iron and nickel sulphates (without presence of additives) in the molar ratio of 2 : 1 (Ni : Fe), the electric current density (50.0 mA/cm2), and the time (3600 s). The mutual alignment of the electric (E) and magnetic field (B) was changeable - parallel and perpendicular. The source of EMF was a set of two permanent magnets (magnetic field strength ranged from 80 mT to 400 mT). It was analysed the surface microstructure, composition, morphology, thickness and the mechanical properties (roughness, work of adhesion). The surface morphology and the thickness of films were observed by Scanning Electron Microscopy (SEM) and Confocal Laser Scanning Microscopy (CLSM). The elemental composition of all FeNi films was measured using Wavelength Dispersive X-Ray Fluorescence (WDXRF). The crystalographic analysis of the deposits was carried out by X-Ray Diffraction. Depending on the used substrate, modified external magnetic field orientation influenced the tribological and physio-chemical properties of the deposited layers. The diamagnetic substrates and EMF application reduced the FeNi thickness and the average crystallites size, in contrast to the paramagnetic substrate. Parallel EMF increased the value of the tribological parameters for CuZn and Ag but decreased for Al. The content of FeNi structure was rising in the case of diamagnetic substrate and the dependence was opposite on the paramagnetic substrate.
Źródło:
Chemistry-Didactics-Ecology-Metrology; 2023, 28, 1-2; 157-170
2084-4506
Pojawia się w:
Chemistry-Didactics-Ecology-Metrology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Practical problems for introductory electrical engineering
Autorzy:
Makal, Jarosław
Alinejad, Aria
Lundheim, Lars
Bolstad, Torstein
Tybell, Thomas
Hardeberg Zimmermann, Pauline
Białostocka, Anna
Choroszucho, Agnieszka
Forenc, Jarosław
Karpiuk, Andrzej
Sierocka, Honorata
Steckiewicz, Adam
Gajić, Bojana
Raičević,, Nebojša B.
Suproniuk, Marek
Powiązania:
https://bibliotekanauki.pl/books/2204855.pdf
Data publikacji:
2023
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Opis:
What makes up a good problem? We will not attempt to give a complete answer to that question. A partial answer is that, for engineering education, it is desirable if a problem in some sense is practical. It should, if possible, relate to the students’ previous experience, connect to applications that the student knows or is about to learn about. Such experienced relevance of the problem might be the spark that inspires an otherwise marginally motivated learner.When selecting problems for this booklet, we have chosen such ones that in our experience have served us well. Several of them have been developed and revised in collaboration with students and learning assistants and have been tried out in courses at our respective institutions. Even though intended learning objectives may be common, the actual syllabus and course construction must always be adapted to local culture, tradition and administrative requirements. A reader may find that some of our suggestions fit well with his or her own way of teaching, others not.
Dostawca treści:
Biblioteka Nauki
Książka
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