Temat: ceramic technology - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Conservation and restoration of a votive mask from Jiyeh in Lebanon
Autorzy:: Tomkowska, Anna
Powiązania:: https://bibliotekanauki.pl/articles/1707592.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:: conservation
ceramic technology
terracotta
Hellenistic mask
reconstruction
retouch
Opis:: A terracotta mask discovered at the site of Jiyeh (ancient Porphyreon) in Lebanon, on the Mediterranean coast between Beirut and Sidon, underwent conservation and restoration in 2014. A silicone cast of the object was made as part of the process, which included reconstruction of the losses and final retouch. The state of preservation of the object was assessed during the course of the conservation. A study of the production technique permitted the mask production process to be reconstructed to a large extent.
Źródło:: Polish Archaeology in the Mediterranean; 2016, 25; 479-486
1234-5415
Pojawia się w:: Polish Archaeology in the Mediterranean
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Design of Millimeter-Wave Six-Port Device for LTCC Technology
Autorzy:: Słojewska, Barbara
Yashchyshyn, Yevhen
Powiązania:: https://bibliotekanauki.pl/articles/227071.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: low temperature cofired ceramic
LTCC
microwave technology
millimeter wave
six-port network
Opis:: In this paper a design of millimeter-wave six-port device for LTCC (Low Temperature Cofired Ceramic) technology is presented. Furthermore, problems with implementation of the project taking into account requirements of LTCC technology are discussed.
Źródło:: International Journal of Electronics and Telecommunications; 2020, 66, 1; 37-43
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Influence of Ceramic Coatings on the Mechanical Properties of Ceramic Moulds Used in the Replicast CS Technology
Autorzy:: Buczkowska, K.
Pacyniak, T.
Powiązania:: https://bibliotekanauki.pl/articles/379579.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: replicast CS technology
refractory ceramic coating
model of polystyrene
casting
ceramic coating
technologia Replicast CS
powłoka ceramiczna
model polistyrenowy
Opis:: The paper discusses the issues related to the Replicast CS technology. The research concerning the indication of the bending strength of ceramic moulds depending on the type and configuration of the shells will determine the effect of the type of binder and powder on the mechanical properties of shell moulds. The experimental studies presented in the paper include the manufacture of polystyrene models, followed by the application of 6 layers of ceramic coatings of different types and configurations on sets of polystyrene and wax models. Next, the studies test the bending strength of the obtained samples of ceramic moulds, depending on the type and configuration of the coatings. The presented research has shown the relationship between the different configurations of the materials used for the manufacture of ceramic coatings and their bending strength. It has been shown that, by the appropriate selection of the ceramic coatings, it is possible to obtain ceramic moulds with a possibly high bending strength.
Źródło:: Archives of Foundry Engineering; 2015, 15, 3 spec.; 112-118
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Drying and hardening of ceramic moulds applied in the investment casting technology - investigations of the process kinetics
Wysychanie i utwardzanie ceramicznych form stosowanych w nowoczesnej technologii wytapianych modeli - badania kinetyki procesu
Autorzy:: Zych, J.
Snopkiewicz, T.
Powiązania:: https://bibliotekanauki.pl/articles/263878.pdf
Data publikacji:: 2011
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: technologia wytapianych modeli
forma ceramiczna
ultradźwięki
kinetyka utwardzania
investment technology
ceramic moulds
ultrasonic technique
hardening kinetics
Opis:: Ceramic moulds applied in the investment casting technology are multilayer structures, built in an alternating process of depositing and drying of successive layers. Each individual layer is formed from a fluid (liquid) ceramic moulding sand and a grain matrix. In the current, environmentally technology fluid ceramic sands based on ethyl silicate are being substituted by ceramic sands containing colloidal silica as a binder. The ability and rates of drying and hardening of these new colloidal (water) ceramic moulding sands are quite different than of the ones which have a binder dissolved in alcohol. The kinetics of the process based on new binders is not well known. The technological principle requires that the successive layer deposition is done only when the one deposited previously is already sufficiently dry. Investigations of the possibility of application of some methods including: ultrasound, resistance and weigh method are presented in the paper. Advantages and disadvantages of each method are indicated as well as the assessment of their practical suitability is perfomed.
Formy ceramiczne stosowane w technologii wytapianych modeli są konstrukcjami wielowarstwowymi, tworzonymi w przemiennym procesie nanoszenia i suszenia kolejnych warstw. Każda pojedyncza warstwa formy tworzona jest z ciekłej masy ceramicznej i osnowy ziarnowej. W aktualnej, proekologicznej technologii zastępuje się ciekłe masy ceramiczne oparte na krzemianie etylu masami ceramicznymi zawierającymi krzemionkę koloidalną jako spoiwo. Zdolność i szybkość wysychania i utwardzania nowych, koloidalnych (wodnych) mas ceramicznych jest zdecydowanie inna od mas ze spoiwem rozpuszczanym w alkoholu. Kinetyka procesu opartego na nowych spoiwach jest stosunkowo słabo poznana. Zasadą technologiczną jest, aby kolejną warstwę nanosić dopiero wtedy, gdy wcześniej naniesiona wyschła w dostatecznym stopniu. W pracy prezentowane są badania nad możliwością zastosowania kilku metod w tym: metody ultradźwiękowej, opornościowej i wagowej. Wykazano zalety i wady każdej z nich jak również dokonano oceny ich praktycznej przydatności.
Źródło:: Metallurgy and Foundry Engineering; 2011, 37, 1; 41-51
1230-2325
2300-8377
Pojawia się w:: Metallurgy and Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Gating systems for sizeable castings from Al alloys cast into ceramic moulds
Autorzy:: Stachovec, I.
Horáček, M.
Zemčík, L.
Kolda, V.
Horenský, J.
Powiązania:: https://bibliotekanauki.pl/articles/382771.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: technologia informatyczna
przemysł odlewniczy
krzepnięcie
układ wlewowy
forma ceramiczna
symulacja
information technology
foundry industry
solidification
gating systems
ceramic mould
simulation
Opis:: In contrast to casting to conventional non-reusable 'sand' moulds, for which calculating technique for an optimum design of the gating system is comparatively well-developed, a trial-and-error method is applied mostly for casting to ceramic shell moulds made by the investment casting technology. A technologist selects from gating systems of several types (that are standardized by the foundry mostly) on the basis of experience. However, this approach is not sustainable with ever growing demands on quality of castings and also the economy of their fabrication as well as with new types of complex sizeable castings introduced to the production gradually (by new customers from the aircraft industry above all) any more. The simulation software may be used as a possible tool for making the process of optimising gating systems more effective.
Źródło:: Archives of Foundry Engineering; 2012, 12, 2; 65-68
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Influence of the Al₂O₃ Solid Phase on the Kinetics of Binding Ceramic Moulds
Autorzy:: Kolczyk, J.
Zych, J.
Jamrozowicz, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/380203.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative foundry technology
innovative foundry material
investment casting technology
ultrasonic test
ceramic mould
aqueous binder
innowacyjna technologia odlewnicza
innowacyjny materiał odlewniczy
technologia wytapianych modeli
pomiar ultradźwiękowy
forma ceramiczna
spoiwo wodniste
Opis:: The investigation results of the kinetics of binding ceramic moulds, in dependence on the solid phase content in the liquid ceramic slurries being 67, 68 and 69% - respectively, made on the basis of the aqueous binding agents Ludox AM and SK. The ultrasonic method was used for assessing the kinetics of strengthening of the multilayer ceramic mould. Due to this method, it is possible to determine the ceramic mould strength at individual stages of its production. Currently self-supporting moulds, which must have the relevant strength during pouring with liquid metal, are mainly produced. A few various factors influence this mould strength. One of them is the ceramic slurry viscosity, which influences a thickness of individual layers deposited on the wax model in the investment casting technology. Depositing of layers causes increasing the total mould thickness. Therefore, it is important to determine the drying time of each deposited layer in order to prevent the mould cracking due to insufficient drying of layers and thus the weakening of the multilayer mould structure.
Źródło:: Archives of Foundry Engineering; 2017, 17, 4; 91-96
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Selected Technological Properties of Liquid Ceramic Slurries Used to Produce Moulds in the Replicast cs Technology
Autorzy:: Kaczorowski, R.
Just, P.
Pacyniak, T.
Powiązania:: https://bibliotekanauki.pl/articles/380254.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Innovative casting material
innovative casting technology
precision casting
thin walled ceramic mould
apparent viscosity
replicast CS technology
innowacyjny materiał odlewniczy
innowacyjna technologia odlewnicza
odlewanie precyzyjne
forma ceramiczna cienkościenna
lepkość pozorna
technologia Replicast CS
Opis:: The study discusses the issues connected with the production of thin-walled ceramic slurry in the replicast cs technology. In the ceramic mould production process, a special role is played by the liquid ceramic slurry used to produce the first layer of the mould. The study examines selected technological properties of liquid ceramic slurries used to produce moulds in the replicas cs technology. The ceramic slurries for the tests were prepared based on the binders Ludox Px30 and Sizol 030, enriched with Refracourse flour. The wettability of the pattern's surface by the liquid ceramic slurry and the dependence of the apparent viscosity on the ceramic flour content in the mixture were determined. The wettability of the pattern surface by the liquid ceramic slurry was determined based on the measurement of the wetting angle. The angle was determined by means of an analysis of the computer image obtained with the use of a CDC camera.
Źródło:: Archives of Foundry Engineering; 2017, 17, 4; 190-194
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Corrosion Resistance and Microstructure of Recasting Cobalt Alloys Used in Dental Prosthetics
Autorzy:: Loch, J.
Krzykała, A.
Łukaszczyk, A.
Augustyn-Pieniążek, J.
Powiązania:: https://bibliotekanauki.pl/articles/380935.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: investment casting technology
ceramic moulds
dental prosthetics
cobalt alloys
corrosion resistance
technologia odlewania
formy ceramiczne
protetyka stomatologiczna
stopy kobaltu
odporność na korozję
Opis:: The work presents the results of the studies of Co-Cr-Mo casting alloys used in the production of frame casts of removable dentures, crowns and bridges in dental prosthetics. The studies were performed on four Co-Cr-Mo alloys of different contents of Mo, W and other additives. Electrochemical tests were performed, which aimed at examining the corrosion resistance of the alloys and observing the alloy structure after chronoamperometric tests with the potential in the area of the occurrence of the passive layer breakpoint. The alloy microstructure images after chronoamperometric tests show the presence of non-uniformly distributed general corrosion. Moreover, a project of cobalt alloy casting was elaborated using a ceramic mold casting. Additionally, analysis of the obtained microstructure was performed. The microstructure of the examined alloys was of the dendrite type. This microstructure was chemically inhomogeneous and consisted of an austenitic matrix formed by a solid cobalt solution and chromium in the core dendritic structure.
Źródło:: Archives of Foundry Engineering; 2017, 17, 2; 63-68
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Influence of the Selected Factors on the Ceramic Moulds Permeability Determined by the New Method
Autorzy:: Kolczyk, J.
Zych, J.
Jamrozowicz, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/382719.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative foundry technologies
innovative foundry materials
investment casting technology
permeability
ceramic moulds
innowacyjne technologie odlewnicze
materiały odlewnicze
technologia odlewania
przepuszczalność
formy ceramiczne
Opis:: Ceramic moulds in the investment casting technology are made by depositing on the wax pattern subsequent layers of a liquid ceramic mass together with a granular matrix. A quality of castings depends on building of individual layers. The results of the ceramic moulds permeability obtained by means of the newly developed measuring method are presented in the hereby paper. Due to the applied solution it is possible to perform measurements also for the first layers which have the decisive influence on a permeability of the whole multilayer ceramic mould. Investigations of the influence of the matrix grain size and annealing temperature on the permeability of ceramic moulds were carried out.
Źródło:: Archives of Foundry Engineering; 2015, 15, 1 spec.; 55-60
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Study of Thermal Properties of Cast Metal-Ceramic Composite Foams
Autorzy:: Gawdzińska, K.
Chybowski, L.
Przetakiewicz, W.
Powiązania:: https://bibliotekanauki.pl/articles/382873.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: casting material
foundry technology
metal composite foam
ceramic composite foam
thermal properties
materiał odlewniczy
technologia odlewnicza
piana metalowa
piana ceramiczna
piana kompozytowa
właściwości termiczne
Opis:: Owing to its properties, metallic foams can be used as insulation material. Thermal properties of cast metal-ceramic composite foams have applications in transport vehicles and can act as fire resistant and acoustic insulators of bulkheads. This paper presents basic thermal properties of cast and foamed aluminum, the values of thermal conductivity coefficient of selected gases used in foaming composites and thermal capabilities of composite foams (AlSi11/SiC). A certificate of non-combustibility test of cast aluminum-ceramic foam for marine applications was included inside the paper. The composite foam was prepared by the gas injection method, consisting in direct injection of gas into liquid metal. Foams with closed and open cells were examined. The foams were foaming with foaming gas consisting of nitrogen or air. This work is one of elements of researches connected with description of properties of composite foams. In author's other works acoustic properties of these materials will be presented.
Źródło:: Archives of Foundry Engineering; 2017, 17, 4; 47-50
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: New investigation method of the permeability of ceramic moulds applied in the investment casting technology
Nowa metoda oceny przepuszczalności form ceramicznych stosowanych w technologii wytapianych modeli
Autorzy:: Zych, J.
Kolczyk, J.
Snopkiewicz, T.
Powiązania:: https://bibliotekanauki.pl/articles/379502.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: innovative foundry technologies
innovative foundry materials
investment casting technology
permeability
ceramic mould
innowacyjne materiały odlewnicze
innowacyjne technologie odlewnicze
technologia wytapianych modeli
przepuszczalność
forma ceramiczna
Opis:: The new investigation method of a permeability of ceramic moulds applied in the investment casting technology, is presented in the paper. Some concepts of performing permeability measurements are shown. Investigations in which the influence of the solid phase fraction in the liquid ceramic moulding sand (LCMS) on a permeability of a multi-layer ceramic mould were performed and discussed. The permeability was estimated during two the most important stages of the technological process: in the first – after wax melting and in the second – after mould annealing. Also an influence of the matrix grain sizes (material for sprinkling) on a ceramic mould permeability was estimated.
W pracy przedstawiono nową metodę badań przepuszczalności form ceramicznych stosowanych w technologii wytapianych modeli. Zaprezentowano koncepcje prowadzenia pomiarów przepuszczalności form ceramicznych. Wykonano badania, w których określono wpływ udziału fazy stałej w ciekłej masie ceramicznej (CMC) na przepuszczalność wielowarstwowej formy ceramicznej. Oceniono przepuszczalność w dwóch najważniejszych etapach procesu technologicznego: w pierwszym - po wytopienia wosku oraz w drugim - po wyżarzeniu formy. Oceniono również wpływ wielkości ziarna osnowy, zwanej potocznie „obsypką” (materiałem do obsypywania), na przepuszczalność formy ceramicznej.
Źródło:: Archives of Foundry Engineering; 2013, 13, 2; 107-112
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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