| Autor: |
C. Muñoz-Ferreiro, C. López-Pernía, R. Moriche, A. Gommeringer, F. Kern, R. Poyato, Á. Gallardo-López |
| Přispěvatelé: |
Universidad de Sevilla. Departamento de Física de la Materia Condensada, Ministerio de Ciencia e Innovación (MICIN). España, European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER), Junta de Andalucía |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Popis: |
Electrical-discharge machining (EDM) of advanced ceramics allows the miniaturization of parts with complex shapes. Since electrical conductivity is required, non-conductive ceramics need a conductive second phase. This work assesses the feasibility of industrial EDM in advanced yttria-stabilized tetragonal zirconia (3YTZP) composites with 20 vol% graphene nanostructures with different morphology using different EDM energies. The structural integrity of the graphene nanostructures, the roughness of the machined surfaces and the geometrical tolerances have been evaluated by Raman spectroscopy, confocal microscopy and scanning electron microscopy, showing that it is possible to obtain a stable and efficient EDM process in these composites using low electrode energies. The use of the largest and thickest graphene nanostructures led to the best performance in terms of EDM machinability, the smallest nanostructures produced the best surface finish for low electrode energy and the thinnest nanostructures allowed the highest material removal rate at medium energy in the composites Ministerio de Ciencia e Innovación (MICIN). España PGC2018-101377-B-100 European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) P20_01024 Junta de Andalucía P20_01024 |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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