Obtaining different magnetic nanoparticles by microwave as additive mineral lubricating
Ana Emilia Diniz Silva Guedes1; Aline Raquel Vieira Silva2; Felipe da Silva Pontes1; Salete Martins Alves1; Valdicleide Silva e Mello1
1 UFRN; 2 UFRJ
doi:10.20906/CPS/COB-2015-1794
Resumo
The synthesis and characterization of magnetic nanoparticles have been widely studied due to their applications in several areas. Obtaining nanomaterials as additives with specific properties for industrial lubricating oil, has been getting a lot of expectations that can minimize tribological problems, in addition the friction and wear are responsible for failures in equipment and machinery. For iron oxide nanoparticles, the most important variations are caused by the observed phenomena that are intrinsic or become dominant in nano-scale. These phenomena include confinement due to the size, predominance interface phenomena and quantum phenomena. However, the study of these magnetic phenomena of nanoparticles is connected with type and morphology, directly influenced by the synthesis. Therefore the aim of this study is to synthesize the nanoparticles by microwave power 300W, in two different times and temperatures, 0.5 minutes and 2.0 minutes, 62° C and 83 ° C, respectively, obtaining them with different physical and chemical properties, also be characterized by XRD and correlated with crystallite size, time, kinetic energy study nucleation and about how the magnetic nanoparticles can act as antiwear additives.
Palavras-chave: Magnetics nanoparticles; Microwave sinthesis; X-Ray Diffraction