Physicochemical Studies of Al–Cu Alloy Powder and Material on Its Basis Produced under Nonoptimal Conditions of 3D Printing
| Autor: | Vitaliy G. Shevchenko, D. A. Eselevich, N. A. Popov, A. G. Merkushev, M. V. Kuznetsov |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Scanning electron microscope 020209 energy Organic Chemistry Alloy Metals and Alloys chemistry.chemical_element 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Copper Surfaces Coatings and Films law.invention Surface tension X-ray photoelectron spectroscopy chemistry law 0202 electrical engineering electronic engineering information engineering Materials Chemistry engineering Selective laser melting Crystallization Composite material 0210 nano-technology Porosity |
| Zdroj: | Protection of Metals and Physical Chemistry of Surfaces. 56:693-699 |
| ISSN: | 2070-206X 2070-2051 |
| DOI: | 10.1134/s2070205120040218 |
| Popis: | The surface structure and volume of a 3D article produced by the method of selective laser melting from a powder of the D-16 alloy has been studied. Using the XPS method, it has been determined that there is an Al2O3 layer on its surface and a metal alloy Al–Cu with a copper content of ~5% under it, which coincides with the data of energy dispersive X-ray analysis conducted on the initial powder by the method of scanning electron microscopy. Local areas with an increased copper content (up to 13 at %) were revealed at the boundaries of the crystal grains. A high porosity of the obtained material has been established, which resulted from the specifics of crystallization of the Al–Cu system’s alloys related to the transfer of substance along the interfaces, as a consequence of the presence of concentration, temperature and, surface tension gradients along with nonoptimal 3D printing conditions. |
| Databáze: | OpenAIRE |
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