Temat: stop metalu - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Towards development of a prototype high-temperature latent heat storage unit as an element of a RES-based energy system (part 2)
Autorzy:: Karwacki, J.
Bogucka-Bykuć, K.
Włosiński, W.
Bykuć, S.
Powiązania:: https://bibliotekanauki.pl/articles/201730.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: latent heat storage
LHS
phase change material
PCM
metal alloy
middle melting point metal PCM
magazynowanie ciepła utajonego
materiał zmiennofazowy
stop metalu
środkowa temperatura topnienia metalu PCM
Opis:: This paper presents an experimental study performed with the general aim of defining procedures for calculation and optimization of shell-and-tube latent thermal energy storage unit with metals or metal alloys as PCMs. The experimental study is focused on receiving the exact information about heat transfer between heat transfer fluid (HTF) and phase change material (PCM) during energy accumulation process. Therefore, simple geometry of heat transfer area was selected. Two configurations of shell-and-tube thermal energy storage (TES) units were investigated. The paper also highlights the emerging trend (reflected in the literature) with respect to the investigation of metal PCM-based heat storage units in recent years and shortly presents unique properties and application features of this relatively new class of PCMs.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 2; 401-408
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The Microstructure of AlSi9Cu3 Alloy after Different Stages of Liquid Metal Preparation
Autorzy:: Poloczek, Ł.
Dybowski, B.
Łuszczak, M.
Kiełbus, A.
Powiązania:: https://bibliotekanauki.pl/articles/380869.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: metallography
alloy Al-Si-Cu
microstructure
scrap
liquid metal treatment
metalografia
stop Al-Si-Cu
złom
obróbka metalu ciekłego
Opis:: Aluminium alloys are one of the most important casting alloys. Among them, the Al-Si alloys comprise perhaps the most important group – about 80% of the aluminium casts are made of them. These materials are characterized by a very good technological properties, good corrosion resistance and tribological properties. Their main disadvantage is, however, presence of the massive, brittle silicon crystals. They significantly affect alloys mechanical properties. Liquid metal treatment is essential for modification of Al-Si eutectic structure. The following work presents results of the research on the microstructure of the AlSi9Cu3 alloy after different stages of liquid metal preparation. Three casting processes have been conducted, chemical composition of the material in each case was in agreement with EN 1706 specification. During each casting process, three specimens were gravity cast: first, made from pure ingots; second, after the scrap addition and third one after the liquid metal treatment. Qualitative and quantitative evaluation of the microstructure was done on each specimen. Specimens cast from pure ingots are characterized by a refined Al-Si eutectic microstructure. After scrap addition, the silicon crystals became morphology of the massive platelets. What is more, intermetallic phases observed within the structure posses different morphologies after different stages of liquid metal preparation. After scrap addition, increased gas porosity was observed. Liquid metal treatment reduced slightly the formation of gas pores.
Źródło:: Archives of Foundry Engineering; 2015, 15, 1 spec.; 89-92
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Mediaeval Casts of the Eastern Reliquary Crosses
Autorzy:: Garbacz-Klempka, A.
Nosek, E. M.
Rzadkosz, S.
Powiązania:: https://bibliotekanauki.pl/articles/381176.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: nondestructive testing method
artistic casting
metal artefacts conservation
copper alloy
bronze
badanie nieniszczące
odlewnictwo artystyczne
konserwacja metalu
stop miedzi
brąz
Opis:: Non-destructive testing methods are widely applied for metal artefacts research. The analyses presented here are part of research and conservation program encompassing metal artefacts discovered during archaeological excavations in the years 2010–2011 in the area of Czermno. Among metal artefacts of archaeological origin there is an important group of objects connected with cult. Reliquary crosses called encolpions can be distinguished here; worn both by priests and by lay people in Central and Eastern Europe. They present an interesting group for historical and iconographic research, as well as for the analyses of the materials and the techniques applied. The type of cast encolpions were examined, found in the area of the old dwelling complex connected with fortified settlement of Czermno (the old Grody Czerwieńskie). These objects are initially dated to the 12^th century. These metal artefacts are researched, by application of the non-destructive testing methods, at the Faculty of Foundry Engineering of the AGH University of Science and Technology in Kraków in cooperation with Maria Curie-Skłodowska University in Lublin, the Polish Academy of Sciences and the Rzeszów University. The research helped to enlarge the scientific scope of knowledge on Mediaeval materials and manufacturing techniques, while the conservation efforts gave back the proper artistic value to the artefacts from Czermno and allowed for the appropriate exhibition.
Źródło:: Archives of Foundry Engineering; 2013, 13, 1 spec.; 147-152
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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