RSS 1.0Artigos - Física - FC
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Low-temperature ZrO2 thin films obtained by polymeric route for electronic applications
Boratto, Miguel H.
; Lima, João V. M. ; Scalvi, Luis V. A. ; Graeff, Carlos F. O. (Journal of Materials Science: Materials in Electronics, 2020) [Artigo]
In this work, zirconium oxide (ZrO2) films obtained by the polymer-assisted chemical solution method were evaluated. Thin films are obtained using dip-coating with dipping rates from 1 to 100 mm/min, and annealing temperatures ... -
Preparation and characterization of a titanium alloy with the addition of tantalum and zirconium for biomedical applications
Kuroda, Pedro Akira Bazaglia; ; Grandini, Carlos Roberto (Revista Materia, 2020) [Artigo]
Titanium alloys are widely used in the biomedical field due to its excellent corrosion resistance in bodily fluids, high mechanical strength/density ratio, low elastic modulus and good biocompatibility. The most promising ... -
The Effect of Solution Heat Treatment Temperature on Phase Transformations, Microstructure and Properties of Ti-25Ta-xZr Alloys Used as a Biomaterial
Kuroda, Pedro Akira Bazaglia; Quadros, Fernanda de Freitas ; ; Grandini, Carlos Roberto (Journal of Materials Engineering and Performance, 2020) [Artigo]
This paper describes a study of the effect of solution heat treatment temperature (500, 750 and 1000 °C) on the phase transformations, microstructure, microhardness and Young’s modulus of Ti-25Ta-xZr alloys, aimed at ... -
Development of novel Ti-Mo-Mn alloys for biomedical applications
Lourenço, Mariana Luna; Cardoso, Giovana Collombaro ; Sousa, Karolyne dos Santos Jorge ; Donato, Tatiani Ayako Goto ; Pontes, Fenelon Martinho Lima ; Grandini, Carlos Roberto (Scientific Reports, 2020) [Artigo]
Due to excellent biocompatibility and corrosion resistance, the application of titanium alloys in orthopedic and dental implants has been increasing since the 1970s. However, the elasticity of these alloys as measured by ... -
Bulk and surface design of MAO-treated Ti-15Zr-15Mo-Ag alloys for potential use as biofunctional implants
Torrento, J. E.; Grandini, C. R. ; ; ; Gonçalves, T. M. ; Sottovia, L. ; Rangel, E. C. ; Cruz, N. C. ; Correa, D. R.N. (Materials Letters, 2020) [Artigo]
This study investigated the effect of silver addition and micro-arc oxidation (MAO) treatment on the microstructure, selected mechanical properties, and surface characteristics of the Ti-15Zr-15Mo (wt%) alloy. The ingots ... -
Preparation, structural, microstructural, mechanical, and cytotoxic characterization of Ti-15Nb alloy for biomedical applications
Kuroda, Pedro Akira Bazaglia; da Silva, Luciano Monteiro ; Sousa, Karolyne dos Santos Jorge ; Donato, Tatiani Ayako Goto ; Grandini, Carlos Roberto (Artificial Organs, 2020) [Artigo]
Titanium alloys are widely used in the biomedical field due to their excellent resistance to corrosion, high mechanical strength/density ratio, low elastic modulus, and good biocompatibility. Niobium is a β-stabilizer ... -
Preparation, structural, microstructural, mechanical and cytotoxic characterization of as-cast Ti-25Ta-Zr alloys
Kuroda, Pedro Akira Bazaglia; de Freitas Quadros, Fernanda ; Sousa, Karolyne dos Santos Jorge ; Donato, Tatiani Ayako Goto ; de Araújo, Raul Oliveira ; Grandini, Carlos Roberto (Journal of Materials Science: Materials in Medicine, 2020) [Artigo]
Titanium alloys have been widely used as biomaterials, especially for orthopedic prostheses and dental implants, but these materials have Young's modulus almost three times greater than human cortical bones. Because of ... -
Towards an ink-based method for the deposition of ZnxCd1-xS buffer layers in CZTS solar cells
; ; ; Graeff, Carlos F. O.; ; ; ; (Journal of Materials Science: Materials in Electronics, 2020) [Artigo]
This work explores two different deposition methods to grow buffer layers of ZnxCd1−xS for application in kesterite (Cu2ZnSnS4 (CZTS)) solar cells. The introduction of the mixed sulfide of Cd and Zn in CZTS based solar ... -
On the mechanical biocompatibility of Ti-15Zr-based alloys for potential use as load-bearing implants
; Rocha, L. A.; Donato, T. A.G. ; Sousa, K. S.J. ; Grandini, C. R. ; ; ; ; (Journal of Materials Research and Technology, 2020) [Artigo]
This study evaluated the mechanical properties and cytocompatibility of recently developed Ti-15Zr-based alloys with Mo addition for potential use as load-bearing implants. The phase composition and microstructure were ... -
Morphology, crystalline structure and chemical composition of MAO treated Ti-15Zr-Mo surfaces enriched with bioactive ions
Sousa, Tiago Santos Pereira; Da Costa, Natália De Araujo ; Correa, Diego Rafael Nespeque ; Rocha, Luis Augusto ; Grandini, Carlos Roberto (Materials Research, 2019) [Artigo]
In this study, MAO treatment was used to enrich, with bioactive Ca, Mg and P atoms, as-casted and heat-treated Ti-15Zr-xMo (x = 0, 5, 10 and 15 wt%) alloys, for potential use as advanced metallic biomaterials. The chemical ... -
In Situ Generation of Fullerene from a Poly(fullerene)
; ; Bregadiolli, Bruna A.; ; ; ; ; Graeff, Carlos F. O. ; ; et al. (Journal of Polymer Science, Part B: Polymer Physics, 2019) [Artigo]
This article appraises the thermal, photo- and photo-oxidative stability of poly(fullerene)-alt-[bismethylbenzene)]s (PFBMBs) prepared by the atom transfer radical addition polymerization (ATRAP) with particular attention ... -
Effect of thermomechanical treatments on the phases, microstructure, microhardness and young's modulus of ti-25ta-zr alloys
Kuroda, Pedro Akira Bazaglia; Quadros, Fernanda de Freitas ; ; ; Grandini, Carlos Roberto (Materials, 2019) [Artigo]
Titanium and its alloys currently are used as implants, possessing excellent mechanical properties (more suited than stainless steel and Co-Cr alloys), good corrosion resistance and good biocompatibility. The titanium alloy ... -
Niobium oxide films deposited by reactive sputtering: Effect of oxygen flow rate
; Affonço, Lucas J.; Junior, Roberto A. R. ; da Silva, José H. D. ; ; Graeff, Carlos F. de O. (Journal of Visualized Experiments, 2019) [Artigo]
Reactive sputtering is a versatile technique used to form compact films with excellent homogeneity. In addition, it allows easy control over deposition parameters such as gas flow rate that results in changes on composition ... -
Thermomechanical treatments influence on the phase composition, microstructure, and selected mechanical properties of Ti–20Zr–Mo alloys system for biomedical applications
Kuroda, P. A.B.; Lourenço, M. L. ; ; Grandini, C. R. (Journal of Alloys and Compounds, 2020) [Artigo]
The study and development of new titanium alloys aim to place a metallic biomedical device with better mechanical compatibility with the bone, that is, with a smaller Young's modulus, on the market, to improve its application ... -
Interactions between wear and corrosion on cast and sintered Ti-12Nb alloy in comparison with the commercial Ti-6Al-4V alloy
; ; ; ; Rodrigues, I. R.; ; Grandini, C. R. ; Rocha, L. A. ; ; (Corrosion Science, 2020) [Artigo]
This work investigates the corrosion and tribocorrosion behavior of α + β Ti-12Nb alloy processed by casting and sintering, in 9 g/l NaCl solution at body temperature, and compares the results with the commercial Ti-6Al-4 ... -
Can photobiomodulation therapy (PBMT) control blood glucose levels and alter muscle glycogen synthesis?
; de Paiva Carvalho, Rodrigo Leal; ; ; ; ; ; (Journal of Photochemistry and Photobiology B: Biology, 2020) [Artigo]
Photobiomodulation therapy (PBMT) has many effects on the energy metabolism of musculoskeletal tissue, such as increased glycogen and adenosine triphosphate synthesis. In addition, these effects may be due to a systemic ... -
TiO2 nanotubes improve physico-mechanical properties of glass ionomer cement
; ; ; ; ; Gomes, Orisson Ponce; ; ; ; et al. (Dental Materials, 2020) [Artigo]
Objectives: The aim of this study was to determine the physico-mechanical properties of a high viscosity glass ionomer cement (GIC) reinforced with TiO2 nanotubes (TiO2-nt). Methods: TiO2-nt was incorporated into the GIC ... -
Degradation behavior of Ti-Nb alloys: Corrosion behavior through 21 days of immersion and tribocorrosion behavior against alumina
; ; Kuroda, P. A.B.; Grandini, C. R. ; ; Rocha, L. A. ; (Corrosion Science, 2020) [Artigo]
Non-toxic and allergic free β-type Ti alloys are attractive metallic implant materials due to their lower Young's modulus and good biocompatibility, but the corrosion and tribocorrosion behavior are yet to be fully understood. ... -
One-pot-like facile synthesis of YBa2Cu3O7-δ superconducting ceramic: Using PVP to obtain a precursor solution in two steps
Rotta, Maycon; ; Pessoa, Alexsander Lourenço ; Carvalho, Claudio Luiz ; ; Lisboa-Filho, Paulo Noronha ; ; Zadorosny, Rafael (Materials Chemistry and Physics, 2020) [Artigo]
There are a variety of chemical routes used to produce advanced ceramic materials. The sol-gel-like methods are widely applied since the final samples present high stoichiometric and grain size homogeneity. However, with ... -
Regional atmospheric dynamics govern interannual and seasonal stable isotope composition in southeastern Brazil
dos Santos, Vinícius; Gastmans, Didier ; ; Felippe Gozzo, Luiz ; Vianna Batista, Ludmila ; Lilla Manzione, Rodrigo ; (Journal of Hydrology, 2019) [Artigo]
Climatic factors controlling seasonal and interannual changes of stable isotope composition in precipitation remains understudied across the tropics. Daily isotopic measurements of rainfall (2014–2017, Rio Claro, Southeast ...