Temat: porous Ti - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Fabrication Of Porous Ti By Thermal Decomposition And Sintering Of PMMA/TiH2 Powder Compact
Wytwarzanie porowatego tytanu przez rozkład termiczny i spiekanie wyprasek PMMA/TiH2
Autorzy:: Jeon, K. Ch.
Kim, Y. D.
Suk, M.-J.
Oh, S.-T.
Powiązania:: https://bibliotekanauki.pl/articles/352341.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: porous Ti
PMMA powders
thermal decomposition of TiH2
pore structure
porowaty tytan
PMMA
rozkład termiczny
struktura porów
Opis:: Porous Ti with controlled pore structure was fabricated by thermal decomposition and sintering process using TiH₂ powders and Polymethylmethacrylates (PMMA) beads as pore forming agent. The beads sizes of 8 and 50 μm were used as a template for fabricating the porous Ti. The TiH₂ powder compacts with 20 and 70 vol% PMMA were prepared by uniaxial pressing and sintered for 2 h at 1100°C. TGA analysis revealed that the PMMA and TiH₂ were thermally decomposed at about 400°C forming pores and at about 600°C into metallic Ti phase. The porosity increased with increase in the amount of PMMA addition. Also, the microstructure observation showed that the pore size and shape were strongly dependent on the PMMA shapes.
Źródło:: Archives of Metallurgy and Materials; 2015, 60, 2B; 1375-1377
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Fabrication and Shape Memory Characteristics of Highly Porous Ti-Nb-Mo Biomaterials
Autorzy:: Kim, Y.-W.
Mukarati, T. W.
Powiązania:: https://bibliotekanauki.pl/articles/351933.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Ti-Nb-Mo alloys
porous scaffolds
biomedical materials
shape memory alloys
Opis:: Non-toxic Ti-Nb-Mo scaffolds were fabricated by sintering rapidly solidified alloy fibers for biomedical applications. Microstructure and martensitic transformation behaviors of the porous scaffolds were investigated by means of differential scanning calorimetric and X-ray diffraction. The α″ – β transformation occurs in the as-solidified fiber and the sintered scaffolds. According to the compressive test of the sintered scaffolds with 75% porosity, they exhibit good superelasticity and strain recovery ascribed to the stress-induced martensitic transformation and the shape memory effect. Because of the high porosity of the scaffolds, an elastic modulus of 1.4 GPa, which matches well with that of cancellous bone, could be obtained. The austenite transformation finishing temperature of 77Ti-18Nb-5Mo alloy scaffolds is 5.1°C which is well below the human body temperature, and then all mechanical properties and shape memory effect of the porous 77Ti-18Nb-5Mo scaffolds are applicable for bon replacement implants.
Źródło:: Archives of Metallurgy and Materials; 2017, 62, 2B; 1367-1370
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effect of Controlled Porosity on the Mechanical Properties of Ti-Zr-Sn-Mo Biomedical Alloys
Autorzy:: Kim, Yeon-Wook
Erlangga, Bagus D.
Do, Dalhyun
Lee, Seong-Min
Powiązania:: https://bibliotekanauki.pl/articles/352474.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Ti-Zr-Sn-Mo alloy
porous scaffolds
biomedical materials
shape memory alloys
Opis:: In this study, a simple and effective way to fabricate highly porous scaffolds with controlled porosity and pore size is demonstrated. Ti-7Zr-6Sn-3Mo shape memory alloy fibers were prepared through a melt overflow process. The scaffolds with porosity of 65-85% and large pores of 100-700 μm in size were fabricated by sintering the as-solidified fibers. Microstructures and transformation behaviors of the porous scaffolds were investigated by means of SEM, DSC and XRD. The scaffolds were composed of β phase at room temperature. Superelasticity with the superelastic recovery strain of 7.4% was achieved by β↔α”phase transformation. An effect of porosity on mechanical properties of porous scaffolds was investigated by using compressive test. As the porosity increased from 65% to 85%, elastic modulus and compressive strength decreased from 0.95 to 0.06 GPa and from 27 to 2 MPa, respectively.
Źródło:: Archives of Metallurgy and Materials; 2020, 65, 4; 1341-1344
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Self-Consolidation Mechanism Of Porous Ti-6Al-4V Implant Prototypes Produced By Electro-Discharge-Sintering Of Spherical Ti-6Al-4V Powders
Mechanizm autokonsolidacji prototypów porowatych implantów wytworzonych przez spiekanie sferycznych proszków Ti-6Al-4V
Autorzy:: Lee, W. H.
Jo, Y. J.
Kim, Y. H.
Jo, Y. H.
Seong, J. G.
Van Tyne, C. J.
Chang, S. Y.
Powiązania:: https://bibliotekanauki.pl/articles/356277.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Ti-6Al-4V
implant
porous
sintering
electrodischarge
porowatość
spiekanie
proszki spiekane
Opis:: Electro-Discharge-Sintering (EDS) was employed to fabricate Ti-6Al-4V porous implant prototypes from atomized powders (100 – 150 μm), that were subjected to discharges of 0.75 to 2.0 kJ/0.7g-powder from 150, 300, and 450 μF capacitors. Both fully porous and porous-surfaced Ti-6Al-4V compacts with various solid core sizes were self-consolidated in less than 86 – 155 μsec. It is known that EDS can simultaneously produce the pinch pressure to squeeze and deform powder particles and the heat to weld them together. The formation of a solid core in these prototypes depends on the amounts of both the pinch pressure and heat generated during a discharge. The size of the solid core and the thickness of the porous layer can be successfully controlled by manipulating the discharge conditions such as input energy and capacitance.
Źródło:: Archives of Metallurgy and Materials; 2015, 60, 2B; 1185-1189
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Plasma Electrolytic Oxidation as a modern method to form porous coatings enriched in phosphorus and copper on biomaterials
Autorzy:: Rokosz, Krzysztof
Hryniewicz, Tadeusz
Powiązania:: https://bibliotekanauki.pl/articles/1190116.pdf
Data publikacji:: 2016
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Plasma Electrolytic Oxidation (PEO)
Niobium
Ti6Al4V
TNZ
Porous coatings
Opis:: In the paper, the porous coatings obtained on niobium and two titanium alloys (Ti6Al4V, and TNZ) after Plasma Electrolytic Oxidation (PEO), known also as Micro Arc Oxidation, were studied. The samples were treated at the voltage of 450 V for 3 minutes in the electrolyte consisting of 300 g and 600 g of copper nitrate Cu(NO3)2 in 1 litre of concentrated phosphoric acid H3PO4, consecutively. SEM and EDS studies were performed on the samples. Based on the obtained results it may be concluded that enriched in copper porous coatings on all studied materials were created in the electrolyte within copper nitrate amounting for 600 g. The proposed by the Authors factor to evaluate the obtained coatings, i.e. copper-to-phosphorus ratio, which for the studied materials amounted to 0.21, clearly indicates that the performed electrochemical PEO treatment for surface modification especially of bioimplants may be advised.
Źródło:: World Scientific News; 2016, 35; 44-61
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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