Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Krystyna Wieczorek"'
Autor:
Barbara Garbarz-Glos, Piotr Dulian, Mateusz Piz, Olena V. Sachuk, W. Bąk, Dionizy Czekaj, Agata Lisińska-Czekaj, Krystyna Wieczorek-Ciurowa
Publikováno v:
Materials, Vol 14, Iss 1187, p 1187 (2021)
Materials
Volume 14
Issue 5
Materials
Volume 14
Issue 5
In this study, ceramic CaCu3Ti4O12 (CCTO) and CaCu3−xMgxTi4O12 solid solutions in which 0.1 ≤ x ≤ 0.5 were prepared by the mechanochemical method, realized by a high-energy ball milling technique. The effects of the Mg2+ ion concentration and s
Autor:
Barbara Garbarz-Glos, Henryk Noga, W. Bąk, C. Kajtoch, Krystyna Wieczorek-Ciurowa, Piotr Dulian, Maija Antonova
Publikováno v:
Ferroelectrics. 497:62-68
In this study the comparison of dielectric behaviour of BaTi1-xZrxO3 (BTZx) ceramic samples prepared by means of a solid state and mechanochemical synthesis was presented. A single phase of perovskite structure was identified in the samples at room t
Autor:
Aleksandra Janusz, Krystyna Wieczorek, Joanna Józwa, Anna Grajewska, Joanna Janusz, Joanna Toborek, Bożena Drybańska, Maria Czachura
Publikováno v:
Postępy Nauk Medycznych. 28:796-799
Introduction. Necrotising enterocolitis (NEC) is a disease developing in neonates. In extreme cases, the septic necrosis of the intestine wall can cover the entire thickness of its wall and result in intestine perforation and, in consequence, to peri
Publikováno v:
Materials Science-Poland, Vol 32, Iss 2, Pp 257-263 (2014)
The study shows the advisability of using a mechanochemical synthesis method, based on a high-energy planetary ball milling, to a modification of barium titanate by a vanadium doping. This method improves useful properties of BaTi0:95V0:05O3 as a cap
Autor:
C. Kajtoch, W. Bak, Krystyna Wieczorek-Ciurowa, Barbara Garbarz-Glos, Dorota Sitko, Ilze Smeltere, Piotr Dulian
Publikováno v:
Ferroelectrics. 464:35-41
Dielectric properties of BaTiO3, BaTiO3 + 0.1 wt.% Fe2O3 and BaTiO3 + 1 wt.% Fe2O3 ceramics were studied. The dielectric measurements were performed at the temperature ranging from 130 K to 500 K and at the frequency ranging from 0.1 Hz to 10 MHz. Ph
Publikováno v:
Materials Science-Poland. 31:462-470
This paper presents mechanochemical synthesis as an alternative to the traditional high-temperature synthesis of advanced electrotechnical ceramic materials with a perovskite-type structure. The reaction conditions for high-energy ball milling, e.g.
Publikováno v:
Key Engineering Materials. 543:326-329
The paper presents a comparative study of Ca0.25Cu0.75TiO3(CCTO) electrical properties produced by two methods - mechanochemical synthesis and high temperature treatment. Products differ significantly in terms of grain morphology and the degree of de
Autor:
Jan Rakoczy, Joanna Nizioł, Elzbieta Filipek, Krystyna Wieczorek-Ciurowa, Piotr Dulian, Anna Blonska-Tabero
Publikováno v:
Catalysis Today. 176:314-317
Mechanochemical synthesis has been successfully employed to prepare a Cu3Fe4(VO4)6 powder. The formation of designed compound (in α-polymorphic form) is due to the reactions of copper, iron and vanadium oxide precursors which were activated by high-
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 88:213-217
Presented work describes mechanical treatment as a non-conventional solid-state process for preparation of some functional materials. Mechanochemical syntheses may be alternative as waste-free and ecologically safer methods of preparing pigments, com
Publikováno v:
Solid State Ionics. 164:193-198
The physical mixtures of copper hydroxocarbonate with different amounts of powder aluminium were activated in a laboratory planetary ball mill. The elucidation of the chemical reactions occurring during grinding is presented. The formation of Cu–Al