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Fabrication and characterization of aluminum based quasicrystalline alloys by use of combinatorial strategies

Grant number: 16/19314-3
Support type:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): March 01, 2017
Effective date (End): August 31, 2017
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
Principal Investigator:Walter José Botta Filho
Grantee:Witor Wolf
Supervisor abroad: Jan Schroers
Home Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
Local de pesquisa : Yale University, United States  
Associated to the scholarship:15/09008-0 - Fabrication of aluminum alloys with quasicrystalline and intermetallic phases with low friction coefficient and low superficial adhesion energy for coating applications on the petrochemical industry, BP.DR


Quasicrystalline alloys exhibit a variety of interesting properties, including high hardness, low friction coefficient, high corrosion resistance in acid medium, high resistance to oxidation and low thermal conductivity. Such features make the quasicrystalline forming alloys suitable candidates to be used as coatings, for example, in the petrol industry, which has major problems associated with corrosion, wear and formation of organic deposits in ducts during oil transport. Most of the quasicrystalline phases are aluminum based and they form within a narrow range of chemical composition. Based on this, a project was proposed for a PhD graduation aiming to produce quasicrystalline aluminum phases through a selection of aluminum based systems that form quasicrystalline phases and the fabrication of compositional variations of them. The Department of Mechanical Engineering and Materials Science of Yale University (New Haven, USA) has a unique facility of combinatorial development of metallic materials by use of a co-sputtering deposition of metallic elements. This allows the fabrication of hundreds of alloy compositions in one target. The objective of this research internship abroad project is to spend a period of 6 months at the Department of Mechanical Engineering and Materials Science of Yale University under the supervision of Prof. Dr. Jan Schroers working on the fabrication of Al-Cu-Fe-M(M=Cr or Ni) alloys aiming to perform a detailed mapping of the region of quasicrystalline phase formation on these systems. The phase mapping will be performed through energy dispersive X-ray (EDX) and X-ray diffraction (XRD). Selected alloys will be also studied by transmission electron microscopy (TEM). This project would provide, not only information regarding the specific chemical compositions that would be used on fabrication of coatings of the original PhD project, but also would provide information regarding the phase formation on a vast number of alloys of the systems Al-Cu-Fe-Cr and Al-Cu-Fe-Ni. (AU)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
WOLF, WITOR; BOLFARINI, CLAUDEMIRO; KIMINAMI, CLAUDIO S.; BOTTA, WALTER J. Designing new quasicrystalline compositions in Al-based alloys. Journal of Alloys and Compounds, v. 823, MAY 15 2020. Web of Science Citations: 0.
WOLF, WITOR; BOLFARINI, CLAUDEMIRO; KIMINAMI, CLAUDIO S.; BOTTA, WALTER J. Fabrication of Al-matrix composite reinforced with quasicrystals using conventional metallurgical fabrication methods. SCRIPTA MATERIALIA, v. 173, p. 21-25, DEC 2019. Web of Science Citations: 1.
WOLF, WITOR; KUBE, SEBASTIAN A.; SOHN, SUNGWOO; XIE, YUJUN; CHA, JUDY J.; ELLEN SCANLEY, B.; KIMINAMI, CLAUDIO S.; BOLFARINI, CLAUDEMIRO; BOTTA, WALTER J.; SCHROERS, JAN. Formation and stability of complex metallic phases including quasicrystals explored through combinatorial methods. SCIENTIFIC REPORTS, v. 9, MAY 9 2019. Web of Science Citations: 2.

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