Bachelor's at Materials Egineering from Federal University of São Carlos (1994), master's at Materials Science and Engineering from Federal University of São Carlos (1997) and PhD at Materials Science and Engineering from Federal University of São Carlos (2001). Associate professor at University of São Paulo (USP). Has experience in materials and metallurgical engineering, focusing on transformation of phases, solidification and acting on the following subjects: metallic glasses, nanocrystalline allloys, cristalization and microestruture characterization. (Source: Lattes Curriculum)
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Despite the great advances in the research field of metallic glasses, during the last fifty years, the actual factors governing the glass forming ability of metallic alloys during solidification are still not well understood. The Glass Forming Ability (GFA) of an alloy is dependent not only of an appropriate combination of chemical elements but also of correct stoichiometry. The main obje…
Recently a new criterion to predict the glass forming ability (GFA) of alloys has been introduced (M. F. de Oliveira, J. Appl. Phys. 111, 023509, 2012). The criterion is based on the topological instability of crystalline phases and electronic parameters (related to the mixing enthalpy). However the topological instability is derived from the approach introduced by Egami and Waseda ( T. E…
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The growing need for high temperature resistant metal alloys has promoted the development of new materials, including Refractory High Entropy Alloys (RHEAs). Its first compositions were reported in 2010 and its mechanical resistance at high temperature outperformed the traditionally used nickel super alloys. REAHs are metallic alloys composed of 5 or more elements, most of them refractory…
The aerospace and power generation industries are constantly looking for new materials that enable an improvement in the performance of thermal machines so necessary to these sectors. The efficiency of thermal machines is closely related to the operating temperature, as at higher service temperatures there is fuel saving and reduced emission of pollutants. For this, it is necessary to dev…
Metallic glasses are metallic materials that do not present any atomic ordered structure at medium and long ranges. They are special kind of alloys that have brought attention lately due to some interesting mechanical properties that are superior to traditional alloys. In order to increase the fabrication quality and to make it easier and cheaper it is important that nucleation and growth…
The growth of the aerospace market brings a boost to the competition between the companies on the aeronautics industry, making them chase for solutions that may reduce operational and production costs. Thus, is possible to observe a growing demand for materials or processes that may reduce the weight of airplanes, and as a result of that, cause a reduction in the use of fuels, contributin…
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Metallic glasses are amorphous metallic alloys that are continuously cooled from liquid state at a higher rate than critical. The fast cooling rate does not allow atoms to organize as crystalline structures with long-range order, so they have local and medium range order only. The poor glass-forming ability presented by the first ever developed metallic glasses limited its thickness to mi…
Several theories have been developed and applied in metallic systems in order to find the best alloy stoichiometries with high glass forming ability; however there is no universal theory to predict the glass forming ability in metallic systems. A new criterion has been applied to predict and select the glass forming ability of metallic alloys. This criterion correlates critical cooling ra…
This research project develops a study on the production of BMG's by electric arc melting under inert atmosphere of argon and squeeze casting in water cooled copper molds. All cast samples were analyzed by X-ray diffraction (XRD). Some were later analyzed by optical microscopy (OM), SEM/EDS and DSC. Studied samples of ternary Zr-Ni-Cu alloys were wedge-shaped. The Zr-Ni-Cu system has no m…
| 10 / 7 | Completed research grants |
| 1 / 1 | Ongoing scholarships in Brazil |
| 29 / 25 | Completed scholarships in Brazil |
| 3 / 3 | Completed scholarships abroad |
| 43 / 36 | All research grants and scholarships |
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