Selection of quaternaries quasicrystalline forming alloys of the system Al-Cu-Fe-(...
| Grant number: | 15/09008-0 |
| Support type: | Scholarships in Brazil - Doctorate |
| Effective date (Start): | August 01, 2015 |
| Effective date (End): | March 31, 2018 |
| Field of knowledge: | Engineering - Materials and Metallurgical Engineering |
| Cooperation agreement: | Coordination of Improvement of Higher Education Personnel (CAPES) |
| Principal Investigator: | Claudemiro Bolfarini |
| Grantee: | Witor Wolf |
| Home Institution: | Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil |
| Associated research grant: | 13/05987-8 - Processing and characterization of amorphous, metastable and nano-structured metallic alloys, AP.TEM |
| Associated scholarship(s): | 16/19314-3 - Fabrication and characterization of aluminum based quasicrystalline alloys by use of combinatorial strategies, BE.EP.DR |
Abstract Quasicrystalline alloys present very interesting characteristics for coating applications such as high hardness, low friction coefficient, low superficial adhesion energy (that is, a material with a nonstick property), high corrosion resistance in acid environment, high oxidation resistance and low thermal conductivity. As an example of a promising application field for these alloys as coatings is the oil industry ,which has problems associated with corrosion, wear and adhesion of organic material on the pipes where the oil is transported which hinders the oil flow. In this sense, quasicrystalline alloys possess excellent surface properties for coating protection of oil line pipes which can decrease the adhesion of organic material on the pipe wall and promote tribological resistance. In this project it is proposed the study of quasicrystalline alloys and intermetallic aproximants with improved combination of the superficial properties quoted above. The study will aim to obtain aluminum alloys with low friction coefficient, low superficial adhesion energy and high corrosion resistance through a selection of aluminum based systems that form quasicrystalline phases and the fabrication of these alloys and compositional variations of them. Fabrication processes as melt-spinning, atomization and thermal spray will be used in this project, which is part of the FAPESP thematic project: "Processamento e Caracterização de ligasmetálicasamorfas, metaestáveis e nano-estruturadas". Among the many characterization methods that will be used the most important are: transmission and scanning electron microscopy (TEM and SEM), X ray diffraction (XRD), differential scanning calorimetry (DSC) and wear and corrosion tests. (AU) | |