Temat: dental alloy - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Microstructural characterisation of Co-Cr-Mo casting dental alloys
Autorzy:: Szala, M.
Beer-Lech, K.
Gancarczyk, K.
Kilic, O.
Pędrak, P.
Özer, A.
Skic, A.
Powiązania:: https://bibliotekanauki.pl/articles/103216.pdf
Data publikacji:: 2017
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: casting
microstructure
Co-Cr-Mo
biomaterials
dendritic structure
phase composition
chemical composition
dental cobalt alloy
Opis:: The study compares the microstructure of three commercial dental cobalt matrix alloys with related chemical composition declared by the manufacturer. Casts were produced with lost wax method, then melted and casted with centrifugal induction casting machine. The Co-Cr-Mo alloys were casted according to the manufacturers procedure. The samples’ chemical composition and phase composition, respectively, using WDXRF (Wavelength Dispersive X-Ray Fluorescence) and XRD (X-ray Diffarction) methods were analysed. Casts microstructure by mean of LOM (Light Optical Microscopy), SEM (Scanning Electron Microscopy) and EDS (Energy Dispersive X-ray Spectroscopy) were investigated. Vickers hardness HV10 was measured. Quantitative microstructure evaluation was performed by means of computer image processing. The results of the chemical composition indicate the high stability of the chemical composition for alloy A. In case of alloys B and C, there was a significant difference in carbon content. Quantitative differences in image of microstructure between of castings A and B, C were noticed. The greater amount of precipitates was recorded for castings with higher carbon content. In all investigated castings, the presence of β matrix solution and M23C6 carbide precipitations was found.
Źródło:: Advances in Science and Technology. Research Journal; 2017, 11, 4; 76-82
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Quality of Ni-Cr-Mo casting dental alloys in terms of Ni and Mo contents changing
Autorzy:: Klimecka-Tatar, D.
Powiązania:: https://bibliotekanauki.pl/articles/114960.pdf
Data publikacji:: 2014
Wydawca:: Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:: Ni-Cr-Mo alloy
dental restorations
Ni alloy
microstructure
stop Ni-Cr-Mo
uzupełnienia protetyczne
stop Ni
Opis:: This paper presents results of microscopic examination and properties comparison of commercial Ni-Cr-Mo alloys (Remanium G-soft and Remanium CSe alloy) commonly used in dental laboratories. The study confirmed that a small change in the content of the basic components of the alloy, has a very large impact on the structural construction of alloy, and consequently on the properties of the alloy. The increased molybdenum content favors the segregation of the components and thus makes it possible to apply the Ni₆₁Cr₂₆Mo₁₁Si_1.5(Fe,Co,Ce)_x (x < 1) as a based material for prosthetics substructure veneered with ceramic material.
Źródło:: Zeszyty Naukowe. Quality. Production. Improvement; 2014, 1 (1); 121-130
2544-2813
Pojawia się w:: Zeszyty Naukowe. Quality. Production. Improvement
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Microstructural and micromechanical tests of titanium biomaterials intended for prosthetic reconstructions
Autorzy:: Ryniewicz, A. M.
Bojko, Ł.
Ryniewicz, W. I.
Powiązania:: https://bibliotekanauki.pl/articles/307469.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: CAD/CAM
protetyka stomatologiczna
DMLS
mikrostruktura
mikrotwardość
tytan
stop tytanu
CAD/CAM system
dental prosthetics
direct metal laser sintering
microstructure
microhardness
titanium
titanium alloy
Opis:: Purpose: The aim of the present paper was a question of structural identification and evaluation of strength parameters of Titanium (Ticp – grade 2) and its alloy (Ti6Al4V) which are used to serve as a base for those permanent prosthetic supplements which are later manufactured employing CAD/CAM systems. Methods: Microstructural tests of Ticp and Ti6Al4V were conducted using an optical microscope as well as a scanning microscope. Hardness was measured with the Vickers method. Micromechanical properties of samples: microhardness and Young’s modulus value, were measured with the Oliver and Pharr method. Results: Based on studies using optical microscopy it was observed that the Ticp from the milling technology had a single phase, granular microstructure. The Ti64 alloy had a two-phase, fine-grained microstructure with an acicular-lamellar character. The results of scanning tests show that titanium Ticp had a single phase structure. On its grain there was visible acicular martensite. The structure of the two phase Ti64 alloy consists of a β matrix as well as released α phase deposits in the shape of extended needles. Micromechanical tests demonstrated that the alloy of Ti64 in both methods showed twice as high the microhardness as Ticp. In studies of Young’s modulus of Ti64 alloy DMLS technology have lower value than titanium milling technology. Conclusions: According to the results obtained, the following conclusion has been drawn: when strength aspect is discussed, the DMLS method is a preferred one in manufacturing load structures in dentistry and may be an alternate way for the CAD/CAM system used in decrement processing.
Źródło:: Acta of Bioengineering and Biomechanics; 2016, 18, 1; 121-127
1509-409X
2450-6303
Pojawia się w:: Acta of Bioengineering and Biomechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Badania biomateriałów metalowych do komputerowego wspomagania projektowania i wytwarzania stałych konstrukcji protetycznych
Tests metallic biomaterials for computer-aided design and manufacturing of fixed prosthetic restorations
Autorzy:: Ryniewicz, A.
Bojko, Ł.
Ryniewicz, W.
Pałka, P.
Powiązania:: https://bibliotekanauki.pl/articles/197737.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:: DMLS
mikrostruktura
mikrotwardość
moduł Younga
protetyka stomatologiczna
CAD/CAM
tytan
stop tytanu
direct metal laser sintering (DMLS)
microstructure
microhardness
Young's modulus
dental prosthetics
titanium
titanium alloy
Opis:: Laserowe spiekanie proszków metali (DMLS) jest nową technologią otrzymywania konstrukcji w procedurze CAD/CAM. Celem opracowania były identyfikacja strukturalna i wyznaczenie parametrów wytrzymałościowych tytanu oraz stopów tytanu przeznaczonych na podbudowy stałych uzupełnień protetycznych otrzymywanych przy komputerowym wspomaganiu projektowania i wytwarzania. Materiałem badań były próbki z czystego technicznie tytanu – gatunek 1 do wytworzenia konstrukcji w technologii obróbki frezowaniem oraz próbki Ti6Al4V z technologii laserowego, przyrostowego spiekania proszków. Wykonano badania mikrostrukturalne i mikromechaniczne. Na ich podstawie stwierdzono, że w aspekcie wytrzymałościowym DMLS jest technologią preferowaną do wykonawstwa stałych konstrukcji nośnych dla protetyki stomatologicznej i może stanowić alternatywę dla systemu CAD/CAM z obróbką ubytkową.
A direct metal laser sintering method (DMLS) is a new technology used for getting structures by the CAD/CAM procedures. The aim of the elaboration was a question of structural identification and setting strength parameters of titanium (Ticp) and its alloy (Ti6Al4V) which are used to serve as base for those permanent prosthetic supplements which are later manufactured with the employment of CAD/CAM systems. The research work was performed on Ticp samples – those which were intended for manufacture of structures by decrement milling working, and Ti6Al4V samples that comes from laser increment sintering of powder. According to the results obtained, the following conclusion has been derived: when strength aspect is discussed, the DMLS method is a preferred one for manufacturing of load structures in dentistry and may be an alternate way for the CAD/CAM system used in decrement processing.
Źródło:: Zeszyty Naukowe. Transport / Politechnika Śląska; 2014, 82; 225-234
0209-3324
2450-1549
Pojawia się w:: Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:: Biblioteka Nauki

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