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24 results on '"Miękoś, Ewa"'

22. Application of industrial and biopolymers waste to stabilise the subsoil of road surfaces

Author

Miękoś, Ewa, Zieliński, Marek, Kołodziejczyk, Karina, and Jaksender, Marta

Abstract

Recycling has been the fundamental idea in the development of new technologies during the recent years. Phosphogypsum is a waste material obtained from the process of phosphoric acid production. Its main component is calcium sulphate (65–75 wt%). The other material in such studies is fly ash. They are obtained as waste in power plants where pulverised coal and brown coal are burnt. Its potential for processing and application as a raw material for stabilisation of road surfaces is demonstrated. Another used waste in the studies was a biopolymers waste. These are epoxy resin based wastes and filler in the form of starch or cellulose (20% wt.). The studies indicated that the use of so-called mixing water that had undergone magnetic treatment in constant magnetic field with a magnetic induction of B = 1 T improved some parameters of appropriately selected building composites of different compositions.

Published
2019
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24. Effects of constant magnetic field on electrodeposition of Co-W-Cu alloy

Author

Andrzej Leniart, Ewa Miękoś, Dominik Szczukocki, Marek Zieliński, Barbara Krawczyk, Renata Juszczak, Radosław Dałkowski, Zieliński Marek, Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Miękoś Ewa, Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Szczukocki Dominik, Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Dałkowski Radosław, Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Leniart Andrzej, Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Krawczyk Barbara, Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, Juszczak Renata, Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, and zielmark@chemia.uni.lodz.pl

Subjects
Condensed Matter::Materials Science, Constant magnetic field, Electrodeposition, Alloys, Magnetohydrodynamic effect, Astrophysics::Galaxy Astrophysics, Computer Science::Other
Abstract

The paper presents a study of the effect of constant magnetic field (CMF) on the basic processes of Co-W-Cu alloys electrodeposition. The alloys electrodeposited in the presence of CMF were more homogeneous and smooth than those obtained without CMF. The reason for these changes was the fact that the Lorentz force, generated in CMF, caused the magnetohydrodynamic (MHD) effect. Electrolyte motion under the influence of CMF caused an increase of cobalt and tungsten content with a simultaneous decrease of copper content in the alloy. The presence of the magnetic field during plating leads to significant greater corrosion resistance and smaller roughness.

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