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- W2466107241 abstract "The scaffolds are material promising for biomedical applications. That type of three-dimensional material possesses properties osteoconductive. However the use of pure titanium for the production of these scaffolds makes this artifact expensive and thus inaccessible to a wide range of people. That is why titanium has been used in combination with other elements such as molybdenum (Mb), tantalum (Ta), zirconium (Zr), tin (Sn) and niobium (Nb). Among the most prominent leagues has the Ti-Sn-Nb because of their excellent biocompatibility. Several methods have been investigated for the production of those scaffolds, including the technique of metallurgy of the powder. In this work scaffolds titanium alloys (Ti-Sn-Nb 2 O 5 ) were produced from the sintering process, in order to obtain a material with a porous surface and a dense core, without the need to use space-holder for the formation of pores in order to use them as a biomaterial. The samples were characterized by optical microscopy, electronic microscopy of scanning and image analysis and absorption. The sample 1 presented a superficial layer with high porosity (56, 42%) denominated of porous layer or bombardment area, after that layer there is a decrease of the porosity. In relation to the nucleus this, comes denser with porosity of 7,44%. The sample A3 presented a high porosity so much in the surface (66,83%) as in the nucleus (58,80%). The sizes of pores found in the samples varied of minor that 10µm and above 150 µm. the sample A1 presented larger microhardness (282,9 Hv) and the sample A3 smaller microhardness (210,14 Hv). The absorption test the sample A3 absorbed faster than the sample A1, in 10 seconds. During the analyses of MEV - EDX was verified the presence of titanium, niobium, tin and oxygen." @default.
- W2466107241 created "2016-07-22" @default.
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- W2466107241 date "2013-01-01" @default.
- W2466107241 modified "2023-09-27" @default.
- W2466107241 title "Sinterização por plasma de arcabouços porosos da liga Ti-Sn-Nb 2 O 5 Plasma sintering of porous scaffolds of Ti-Sn-Nb 2 O 5 alloys" @default.
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