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Wyświetlanie 1-15 z 289
Tytuł:
Targety ceramiczne na bazie tlenku cyrkonu do otrzymywania nanokrystalicznych żaroodpornych i żarowytrzymałych powłok
Zirconium - based ceramic targets for producing nanocrystalline caotings resistant to heat and thermal creep
Autorzy:
Biesiada, K.
Kostecki, M.
Olszyna, A.
Powiązania:
https://bibliotekanauki.pl/articles/257714.pdf
Data publikacji:
2007
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:
targety ceramiczne
ceramika cyrkonowa
kompozyty ceramiczne
ceramics targets
zirconium oxide ceramics
ceramics composites
Opis:
Technologia ceramicznych barier termicznych (TBC) oparta jest głównie na materiałach z jedną barierą termiczną w postaci 7YSZ. Wysoka zawartość Y2O3 zapewnia wysoką stabilność fazową tworzywa YSZ. Niemniej poszukiwania alternatywnych materiałów na TBC prowadzone są najczęściej w kierunku modyfikacji tlenku cyrkonu. Osiągnięcie tego celu umożliwia zastosowanie proszku ZrO2 stabilizowanego Y2O3 i domieszkowanego tlenkami La, Gd i Nd. W pracy przedstawiono badania nad wytworzeniem katodowego targetu ceramicznego na bazie tlenku cyrkonu do otrzymywania metodami PVD nanokrystalicznych żaroodpornych i żarowytrzymałych powłok TBC, charakteryzującego się dużą gęstością (bliską gęstości teoretycznej) oraz jednorodną budową strukturalną i chemiczną.
Thermal barrier ceramics (TBCs) has chiefly been produced in the 7YSZ form with the single thermal barrier. The high content of Y2O3 in the YSZ materials ensures their good phase stability. Nevertheless, investigastions aimed at finding alternative TBC materials are most often directed towards the zirconium oxide ZrO2 modified by various methods. Attempts have been made with a ZrO2 powder stabilized with Y2O3 and doped with La, Gd and Nd oxides. The present study was concerned with the fabrication of a cathodic zirconium oxide based ceramic target using the PVD methods, with the aim of producing nanocrystalline TBC coatings resistant to heat high density (close to the theoretical value), and is homogeneous in both the structural and chemical terms.
Źródło:
Problemy Eksploatacji; 2007, 1; 35-43
1232-9312
Pojawia się w:
Problemy Eksploatacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ceramika siwa i czarna pogranicza polsko-litewskiego
Pottery grey and black Polish-Lithuanian borderland
Autorzy:
Wowak, J.
Powiązania:
https://bibliotekanauki.pl/articles/169091.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Ceramiki i Materiałów Budowlanych
Tematy:
ceramika
siwak
glina
czarna ceramika
zdobienia
ceramics
grey ceramics
clay
black ceramics
decorations
Opis:
Artykuł przedstawia krótką historię rozwoju garncarstwa na terenach przygranicznych Polski i Litwy, tajniki produkcji siwaków w Polsce – z uwzględnieniem jednego z największych ośrodków (Czarnej Wsi Kościelnej) – oraz czarnej ceramiki na Litwie, wyrabianej w Parku Narodowym Dzūkija, w okolicach Merkinė, nad rzeką Niemen. Szczególny nacisk położony został na metody pracy, narzędzia, sposoby zdobienia, techniki wypalania oraz sposoby produkcji ceramiki. Dokonano także omówienia wybranych twórców siwaków z Polski oraz czarnej ceramiki na Litwie. Poza tym poruszony został także problem tożsamości narodowej i przynależności etniczno-kulturowej omawianych regionów oraz kontynuacji tradycji wypalania ceramiki wśród młodego pokolenia.
The article presents a short story of potteries’ development in the borderland of Poland and Lithuania. Moreover, the secrets of production of siwak in Poland, bearing in mind one of the greatest centres, Czarna Wieś Kościelna, as well as black ceramics in Lithuania. The above mentioned black ceramics are being made in the Dzūkija National Park, nearby Merkinė, by the Niemen river. Particular stress was put on the methods of work, tools, ways of decoration, baking techniques and also new ways of ceramics’ manufacture. The selected creators of siwak in Poland and black ceramics in Lithuania have been discussed. It is worth mentioning that the problem of national identity and ethnic and cultural affiliation of presented regions and continuation of firing tradition by young generation has been shown.
Źródło:
Szkło i Ceramika; 2014, R. 65, nr 6, 6; 19-23
0039-8144
Pojawia się w:
Szkło i Ceramika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure and properties of the tool ceramics with hard wear resistant coatings
Autorzy:
Pakuła, D.
Staszuk, M.
Gołombek, K.
Śliwa, A.
Mikuła, J.
Powiązania:
https://bibliotekanauki.pl/articles/351856.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
PVD coatings
Nitride Tool Ceramics
Sialon Tool Ceramics
Opis:
This work presents studies of the structure and functional properties of coatings deposited onto indexable inserts made of nitride and sialon tool ceramics with the required properties, i.e. high adhesion, niicrohardness. high resistance to abrasive and diffusion wear in working conditions of high-performance cuttings tools. In the present paper the results of the investigations of the structure, texture, mechanical and functional properties of the Ti(C,N), (Ti.Al)N, Ti(C.N)+(Ti,Al)N coatings were presented. The 80% increase in the hardness of the coatings in comparison to the substrate material was reported. Test coatings are characterized by good adhesion to the substrate. The maximum Lc load of (Ti A1)N coat applied to the substrate from the nitride ceramics is equal to 42 N. In the studied coatings compressive stresses were found. The results of mechanical properties investigations, especially tribological ones correlate with the results of exploitation tests carried out during the cutting test.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 3; 1265-1270
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technology and Electrophysical Properties of the (K0.44Na0.52Li0.04)NbO3 Ceramics Doped by Cr3+, Zn2+, Sb3+ or Fe3+
Autorzy:
Bochenek, D.
Osińska, K.
Niemiec, P.
Adamczyk, M.
Goryczka, T.
Szych, R.
Powiązania:
https://bibliotekanauki.pl/articles/356149.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lead free ceramics
KNLN ceramics
SEM microstructure
dielectric tests
Opis:
In the work five ceramic compounds based on the (K0.44Na0.52Li0.04)NbO3 (KNLN) material modified with oxides: Cr2O3, ZnO, Sb2O3 or Fe2O3 (in an amount of 0.5 mol.%) were obtained. The KNLN-type composition powder was prepared by solid phase synthesis from a mixture of simple oxides and carbonates, while compacted of the ceramic samples was conducted by free sintering methods. In the work the effect of the used admixture on the electrophysical properties of the KNLN ceramics was presented. The XRD, EDS tests, the SEM measurements of the morphology ceramic samples, dielectric properties and DC electric conductivity were conducted. The research showed that the used admixtures introduced into the base of KNLN-type composition improve the microstructure of the ceramic samples and improve their sinterability. In the case of the dielectric measurements, it was observed a decrease in the maximum dielectric permittivity at the TC for dopred KNLN-type samples. The addition of an admixture of chromium, zinc, antimony or iron in an amount of 0.5 mol.% to the base composition (K0.44Na0.52Li0.04)NbO3 practically does not change the phase transition temperature. The diminution in the density value of doped KNLN ceramics was attributed to the alkali elements volatilization.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 3; 1401-1409
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ceramic for restoration dentistry
Autorzy:
Podzorova, L. I.
Il'icheva, A. A.
Mikhailina, N. A.
Pen'kova, O. I.
Shvorneva, L. I.
Volchenkova, V. A.
Kuthev, S. V.
Powiązania:
https://bibliotekanauki.pl/articles/285288.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
ceramics
dentistry
restoration
Źródło:
Engineering of Biomaterials; 2012, 15, no. 116-117 spec. iss.; 1-2
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modification of poly(lactic acid) (PLA) and poly(lactide-co-glycolide) (PLGA) fibres by ceramic particles
Autorzy:
Król, P.
Boguń, M.
Powiązania:
https://bibliotekanauki.pl/articles/284307.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
PLGA
fibres
ceramics
Źródło:
Engineering of Biomaterials; 2018, 21, 148; 113
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of glass and ceramic waste on selected properties of materials with a cement
Autorzy:
Jura, J.
Ulewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/104251.pdf
Data publikacji:
2018
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
cement mortars
mechanical properties
utilitarian ceramics
sanitary ceramics
CRT glass
Opis:
The article presents the impact of selected waste materials (usable ceramics, sanitary ceramics, CRT glass cullet) on the physical and mechanical properties of cement-based materials (cement mortars). The samples of cement mortars made were 10, 20 and 30% addition of waste material. Physical and mechanical properties of modified cement mortars were compared with standard mortar. The highest compressive strength obtained mortar with the addition of usable and sanitary ceramics in the amount of 30%. The mortar was also characterized by the lowest decreases in compressive strength after frost resistance tests. The use of 30% sanitary ceramics resulted a compressive strength drop of 3.5% compared to 18% for the standard mortar. The absorbability of all samples differed slightly.
Źródło:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2018, 65, 1; 81-87
2300-5130
2300-8903
Pojawia się w:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the sol-gel method at the fabrication of PLZT:Yb3+ ceramics
Autorzy:
Osińska, K.
Płońska, M.
Marzec, A.
Powiązania:
https://bibliotekanauki.pl/articles/353490.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
PLZT:Yb3+ ceramics
sol-gel method
perovskite structure ceramics
Opis:
The aim of presented study was to obtain the PLZT:Yb ceramics. Nanopowders of itterbiuni doped PLZT materials were synthesized by the sol-gel method from high quality metaloorganic precursors, as lead (II) acetate, lanthanum acetate, ytterbium acetate, zirconium (IV) propoxide and titanium (IV) propoxide. Anhydrous acetic acid and n-propyl alcohol were used as solvents, while acetyloacetone was added as stabilizer of hydrolysis reactions. Thermal evolution of the dried gels, before and after calcination, was studied by the simultaneous thermal analysis. The amorphous PLZT:Yb3+ gels were first calcined in the furnace at T = 850°C, and then mixed in the planetary ball mill. Additionally, the mean particle sizes were calculated by means of powder specific surface area measurements, based on the BET physical adsorption isotherm. Such obtained powders were subsequently pressed into pellets, and sintered by the free sintering method at temperature T= 1250°C / 6h. The morphology of fabricated PLZT:Yb:3+ ceramic powders and samples was studied using Scanning Electron Microscopy. Chemical characterization of samples was carried on using the Energy-dispersive X-ray spectroscopy – EDS system. Studies provided detailed data concerning die relationships between doping and preparing conditions on the basic physical and chemical properties of obtained ceramic materials.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 3; 1441-1446
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gravettian Ceramic Firing Techniques in Central and Eastern Europe
Technologia wypalania ceramiki w kulturze graweckiej na terenie Europy Środkowej i Wschodniej
Autorzy:
Kuczyńska-Zonik, Aleksandra
Powiązania:
https://bibliotekanauki.pl/articles/497944.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Rzeszowski. Instytut Archeologii Uniwersytetu Rzeszowskiego. Muzeum Okręgowe w Rzeszowie
Tematy:
Upper Paleolithic ceramics
ceramic production
ceramics from Central and East Europe
Opis:
The main goal of this paper is to explore the diversity of Gravettian ceramics (30–20/16 thousand years ago), from Central and Eastern Europe. Most of the ceramic fragments were found in the Czech Republic. So far many ceramic analises have been made providing information about the technique of ceramic production in the Upper Paleolithic. Similar analyses have also been conducted in Russia allowing for comparing different types of ceramic production in various parts of Europe. The article discusses the finds ceramics from Czech (Pavlov, Dolní Věstonice) and Russian (Kostenki, Zaraysk) archaeogical sites and draws attention to features such as raw material, manufacturing and firing techniques and probable functions which such artefacts may have played. It is argued that the ability to produce ceramics in Gravettian cultures in Central and Eastern Europe developed at different times and in different ways
Źródło:
Analecta Archaeologica Ressoviensia; 2014, 9; 79-94
2084-4409
Pojawia się w:
Analecta Archaeologica Ressoviensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrical properties of BaCeO₃-based electrolytes for use in dual protonic ceramic-solid oxide fuel cells
Autorzy:
Gawel, R.
Przybylski, K.
Powiązania:
https://bibliotekanauki.pl/articles/1055096.pdf
Data publikacji:
2017-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
composites
electrolytes
ceramics
electrochemistry
Opis:
Bulk samples consisting of BaCe_{0.85}Y_{0.15}O_{3-δ} (BCY15) and Ce_{0.85}Y_{0.15}O_{2-δ} (YDC15) compounds, mixed together in different ratios, were studied as potential electrolytes in dual protonic ceramic-solid oxide fuel cells and compared with non-composite BCY15 and YDC15. The microstructures of the sintered materials indicate that BCY15 exhibits the largest grains, whereas composites have greater visible porosity than the non-composite samples. From X-ray diffraction studies it follows that BCY15 and YDC15 consist mainly of one phase, whereas the composites are two-phase materials. Electrochemical impedance spectroscopy studies at different temperatures show that the composite materials are capable of conduction the order of 10¯³ S/cm at temperatures above 500°C in a hydrogen-containing atmosphere. Furthermore, activation energy values of the conductivity determined for the composites in air atmosphere are between those obtained for BCY15 (E_{a}=0.590±0.017 eV) and YDC15 (E_{a}=1.132±0.008 eV). From this it follows that both phases of the composites influence the electrical conductivity of the materials. In conclusion, BCY15 and the BCY15-YDC15 composites show promise for future use as electrolytes in dual protonic ceramic-solid oxide fuel cells.
Źródło:
Acta Physica Polonica A; 2017, 131, 5; 1361-1366
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biomimetic in situ nucleation of calcium phosphate/Ag coating on bioinert ceramic
Autorzy:
Schickle, K.
Desante, G.
Goldschmidt, G. M.
Zybała, R.
Krok-Borkowicz, M.
Pamuła, E.
Telle, R.
Powiązania:
https://bibliotekanauki.pl/articles/285459.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
ceramics
dental industry
coatings
Źródło:
Engineering of Biomaterials; 2018, 21, 148; 27
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fatigue testing of dental bridges on selected examples
Autorzy:
Urban, D.
Jałbrzykowski, M.
Gołębiewska, M.
Powiązania:
https://bibliotekanauki.pl/articles/386977.pdf
Data publikacji:
2017
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
dental bridge
ceramics
durability
Opis:
The paper presents example tests of the functional quality of selected designs of dental bridges. These were: porcelain bridges on a metal base (cobalt based alloy), porcelain bridges on a zirconia base (zirconia ceramic – Zirkon Zahn), and full zirconia bridges (Zirkon Zahn). For the purpose of the study, durability of bridges in cyclic fatigue testing was adopted as a measure of their quality. The tests were carried out on a Zwick Roell Z010 universal testing machine. They consisted in cyclic loading and unloading of dental bridges mounted on gypsum models at a loading force of F= 400 [N] and a frequency of load of f= 1 [Hz]. Each bridge was subjected to a cycle of 7200 loads. The results show that there are no significant differences in the functional quality of the bridges.
Źródło:
Acta Mechanica et Automatica; 2017, 11, 1; 53-57
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cast Iron Reinforced with Foaming Ceramic Insert
Autorzy:
Dulska, A.
Studnicki, A.
Cholewa, M.
Szajnar, J.
Powiązania:
https://bibliotekanauki.pl/articles/382732.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ceramics
cast iron composite
ceramics insert
materiał ceramiczny
kompozyt żeliwny
wkład ceramiczny
Opis:
This paper presents matters related to production of ceramic and cast iron composite. The composite was made with the use of a foam structured ceramic insert. The tests included measuring of hardness, impact strength and resistance to abrasive wear of the composite produced. On the basis of obtaining results was stated that the use of foamed ceramic filters provides good conditions of filling a ceramic framework with molten grey or chromium cast iron. The growth of hardness of the ceramic-grey cast iron composite is ca. 60% as compared to the grey cast iron hardness. The growth of hardness of the ceramic-chromium cast iron composite is slight and does not exceed 5 % in comparison to the chromium cast iron. Introduction of the ceramic inserts deteriorates the cast iron impact strength by ca. 20 - 30 %. The use of ceramic inserts increases the resistance to abrasive wear in case of grey cast iron by ca. 13% and in case of the chromium cast iron by ca. 10 %.
Źródło:
Archives of Foundry Engineering; 2018, 18, 2; 137-140
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Textile-impressed Pottery Revisited: Its Usefulness for Studying Bronze Age Textile Craft in Estonia
Autorzy:
Rammo, Riina
Powiązania:
https://bibliotekanauki.pl/articles/1774817.pdf
Data publikacji:
2019-01-10
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
textile impressions on ceramics
textile ceramics
Bronze Age
textile technology
East Baltic
Opis:
Although textile craft is a socially complex and economically significant phenomenon, little is known about textile techniques in the Bronze Age of the eastern shore of the Baltic Sea, including Estonia. No textile or cloth remains dated to the Bronze Age, i.e. between 1800 and 500 BC in the Estonian context, have been found so far. Only indirect evidence such as possible textile tools and impressions on pottery can be used in the study of textile-making. The aim of the present study is to review the available evidence regarding Bronze Age pottery with patterns commonly described as made with textiles, and to systematise it. As a result, it is suggested that the evidence based on these impressions is even more limited than thought so far. Few finds clearly indicate the use of textiles. Regular patterns consisting of variously-shaped concavities on the vessels’ walls may have been made also with other items, for example by rolling fir cones over the surface of a freshly-modelled pot.
Źródło:
Światowit; 2017, 56(1); 111-118
0082-044X
Pojawia się w:
Światowit
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Egyptian imitations of Chinese celadon from the 14th–15th centuries found at Kom el-Dikka in Alexandria
Autorzy:
Redlak, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/1683712.pdf
Data publikacji:
2018-07-09
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
Islamic ceramics
Mamluk glazed ceramics
Egyptian imitations of Chinese celadons
Egyptian Mamluk celadons
Opis:
In Islamic Egyptian glazed ceramics there are three ceramic types inspired by Chinese pottery, stoneware and porcelain: sancai pottery, celadon stoneware and Blue and White porcelain. Egyptian imitations of Chinese celadon ware, produced in the 14th and 15th centuries mainly by Cairene potters working at the Fustat workshops, are particularly noteworthy and the Kom el-Dikka site in Alexandria, excavated by the Polish Centre of Mediterranean Archaeology University of Warsaw, has yielded a collection of over 300 pieces. The typological analysis was based on 235 distinct fragments of utilitarian wares selected on account of their form, decorative elements, technical quality, possible technological defects and, first and foremost, characteristics that qualify them as imitations of Chinese celadon. Two typological ware groups were distinguished: those inspired by Chinese prototypes and those representing indigenous Egyptian ceramics infused with certain motifs copied from the Chinese celadons.
Źródło:
Polish Archaeology in the Mediterranean; 2017, 26(1); 59-84
1234-5415
Pojawia się w:
Polish Archaeology in the Mediterranean
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 289

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