Zobrazeno 1 - 10
of 175
pro vyhledávání: '"František Lukáč"'
Publikováno v:
Ceramics, Vol 6, Iss 4, Pp 1913-1925 (2023)
High-pressure forming at 300 MPa and room temperature was applied before the sintering of a lithium fluoride (LiF) powder. The as-fired samples were tested as dielectrics and showed very interesting characteristics. The best sample, sintered at 750
Externí odkaz:
https://doaj.org/article/dea7ab8e75094fbdad2860bc353ecd58
Autor:
Vitalijs Abramovskis, Reinis Drunka, Štefan Csáki, František Lukáč, Jakub Veverka, Ksenia Illkova, Pavels Gavrilovs, Andrei Shishkin
Publikováno v:
Materials, Vol 16, Iss 24, p 7523 (2023)
By applying the physical vapour deposition method, hollow ceramic microspheres were coated with titanium, and subsequently, they were sintered using the spark plasma sintering technique to create a porous ceramic material that is lightweight and devo
Externí odkaz:
https://doaj.org/article/7d08b37651444c8bb7bf7c097e46dcae
Autor:
Zdeněk Česánek, Kateřina Lencová, Jan Schubert, Jakub Antoš, Radek Mušálek, František Lukáč, Marek Palán, Marek Vostřák, Šárka Houdková
Publikováno v:
Materials, Vol 16, Iss 12, p 4492 (2023)
This study is focused on the high-temperature corrosion evaluation of selected thermally sprayed coatings. NiCoCrAlYHfSi, NiCoCrAlY, NiCoCrAlTaReY, and CoCrAlYTaCSi coatings were sprayed on the base material 1.4923. This material is used as a cost-ef
Externí odkaz:
https://doaj.org/article/97fda20d15764f71930ed10124a41bd5
Autor:
Michal Knapek, Mária Zemková, Adam Greš, Eva Jablonská, František Lukáč, Robert Král, Jan Bohlen, Peter Minárik
Publikováno v:
Journal of Magnesium and Alloys, Vol 9, Iss 3, Pp 853-865 (2021)
Alloying of Mg with rare-earth (RE) elements proved to be beneficial for their in-vitro and in-vivo performance. In this work, a novel WN43 (Mg-4 wt%Y-3 wt%Nd) alloy with a well-defined composition was prepared, where, unlike in the commercial WE43 a
Externí odkaz:
https://doaj.org/article/b3baa164f86442a3b667c6d24d66ba3a
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 27, Iss 0, Pp 13-17 (2020)
NiCrAlY deposited by different thermal spraying methods is commonly used as the bond coat material in thermal barrier coatings (TBCs). In the present study, two experimental coatings were deposited by hybrid water stabilized plasma (WSP-H) and radio
Externí odkaz:
https://doaj.org/article/1beab1fb198d44b49cf550fb8fe06591
Autor:
Kateřina Lencová, Marie Frank Netrvalová, Marek Vostřák, František Lukáč, Radek Mušálek, Zdeněk Česánek, Šárka Houdková
Publikováno v:
Materials, Vol 16, Iss 4, p 1712 (2023)
In order to extend the life of boilers by applying an anti-corrosion coating without the need to dismantle them, it is advisable to find coatings that can be applied using cheaper and portable techniques, such as Twin Wire Arc Spray technology (TWAS)
Externí odkaz:
https://doaj.org/article/f5b17cb121ec4d8f9015d72a8dd05a2c
Publikováno v:
Materials, Vol 16, Iss 3, p 975 (2023)
Calcium titanate (CaTiO3) powder was compacted by spark plasma sintering (SPS). The resulting products were subjected to the phase stability study and dielectric characterization. The change in temperature of SPS between 1100 °C and 1250 °C had a c
Externí odkaz:
https://doaj.org/article/768049d6476b4b5e889a706fab0e9487
Publikováno v:
Materials, Vol 15, Iss 9, p 3029 (2022)
Illitic clays are the commonly used material in building ceramics. Zeolites are microporous, hydrated crystalline aluminosilicates, they are widely used due to their structure and absorption properties. In this study, illitic clay (Füzérradvány, H
Externí odkaz:
https://doaj.org/article/78fc22008a0143ff849f3e3f25e67e99
Autor:
Tomáš Vlasák, Jakub Čížek, Oksana Melikhova, František Lukáč, Dalibor Preisler, Miloš Janeček, Petr Harcuba, Mariia Zimina, Ondřej Srba
Publikováno v:
Metals, Vol 12, Iss 3, p 394 (2022)
In the present work, a series of high-entropy alloys based on refractory metals Hf, Nb, Ta, Ti, V, and Zr with various compositions have been systematically investigated. Our study revealed that a bcc single-phase solid solution of a Hf-Nb-Ta-Ti-V-Zr
Externí odkaz:
https://doaj.org/article/39e34062ebec40ea8b89554e62bf8f00
Autor:
Martin Vlach, Veronika Kodetova, Jakub Cizek, Michal Leibner, Tomáš Kekule, František Lukáč, Miroslav Cieslar, Lucia Bajtošová, Hana Kudrnová, Vladimir Sima, Sebastian Zikmund, Eva Cernoskova, Petr Kutalek, Volkmar-Dirk Neubert, Volkmar Neubert
Publikováno v:
Metals, Vol 11, Iss 1, p 8 (2020)
A detailed characterization of phase transformations in the heat-treated commercial 7075 aluminum alloys without/with low Sc–Zr addition was carried out. Mechanical and electrical properties, thermal and corrosion behavior were compared to the micr
Externí odkaz:
https://doaj.org/article/531a96a449e3404e868b1cd4f0e831de