Abstract
En este trabajo, se estudiaron compuestos de nanoplaquetas de grafeno (GNP) como refuerzo de una aleación de aluminio, estudiándose refuerzos con adiciones variables de hasta un 2,0% en peso de GNP. Los polvos, de diferentes composiciones, se agitaron durante 2 h a una velocidad de 35 rpm en un mezclador tipo V para obtener una dispersión homogénea. Posteriormente, se sintetizaron mediante un tratamiento térmico a 620 ºC, en un horno de inducción de ultra alta frecuencia (UHFIHS) durante 5 min y 40 MPa de presión en un entorno de vacío. Se evaluó la densidad, rugosidad superficial, pérdida de masa ocurrida durante el proceso y la dureza Vickers de los nanocomposites obtenidos en cada caso. Se realizaron análisis SEM, EDX y XRD y se examinaron los resultados obtenidos. Se evaluó el efecto de la adición de grafeno en el aluminio y se determinó que las mejores propiedades se producían para una adición de un 0,8% en peso de GNP.
Highlights
The need for advanced engineering materials is increasing in the aeroplane, aerospace, energy, defence, and transportation industries, because a single material often cannot meet the requirements (Ozden et al, 2007; Topcu et al, 2009; Varol et al, 2017)
Contrary to what is used in this study, conventional sintering applications are generally performed by using a furnace
The particle size of 40-50 μm, purity of 99.5% alumina nanoparticles (44931 Alfa Aesar Aluminum oxide NanoDur) and sub-micron particles, S.A. 500 m2·g-1 Graphene (47132 Alfa Aesar, Graphene nanoplatelets aggregates,) were used. 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.8, 1 and 2 wt.% of Graphene NanoPlatelets (GNP) was added to aluminium nanoparticles and coded as in Table 1 according to the various GNP addition
Summary
The need for advanced engineering materials is increasing in the aeroplane, aerospace, energy, defence, and transportation industries, because a single material often cannot meet the requirements (Ozden et al, 2007; Topcu et al, 2009; Varol et al, 2017). Contrary to what is used in this study, conventional sintering applications are generally performed by using a furnace This sintering method is the cheapest and easiest heating method in PM this can increase the properties of the material to a certain extent. Cavdar and Akurt (2018), Rashad et al (2015) and Khorshid et al (2016) fabricated Al-GNP composites by using nano powders by using conventional sintering method. They investigated the microstructural, mechanical (Çavdar and Akkurt, 2018), electrochemical properties (Rashad et al, 2015) and tribological behaviours (Khorshid et al, 2016) of Aluminium composites reinforced with Graphene NanoPlatelets
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