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handle: 10261/34136
[EN]The invention relates to the preparation and use of metallic nanoparticles that are protected by an organic crust as a system for improving the tribological behaviour of contact surfaces that move in relation to one another. The use of said nanoparticles either in the pure form or dispersed in a continuous medium (aqueous or organic) enables the passage of electric current through the contact being lubricated. The adsorption and/or migration of the metallic nanoparticles in relation to the contact surfaces increases the load capacity and prevents wear without negatively affecting the coefficient of friction. The size, microstructure and chemical composition of the nanoparticles (type of crust and metallic core) can be suitably controlled in order to enable the preparation of formulations that can be used for different applications (dispersants, lubricants, softeners, etc.) for which it is also beneficial for the mixture to be electrically conductive.
[ES]La presente invención recoge la preparación y el empleo de nanopartículas metálicas protegidas por una corteza orgánica como sistema para mejorar el comportamiento tribológico de superficies en contacto y en movimiento relativo. Su utilización tanto en forma pura como dispersadas en el seno de un medio continuo (acuoso u orgánico) permite el paso de la corriente eléctrica a través del contacto que lubrica. La adsorción y/o migración de las nanopartículas metálicas sobre las superficies en con tacto incrementa la capacidad de carga y previene el desgaste sin deterioro del coeficiente de fricción. Mediante adecuado control del tamaño, microestructura y composición química de las nanopartículas (tipo de corteza y núcleo metálico) pueden prepararse formulaciones útiles para diferentes aplicaciones (dispersantes, lubricantes, suavizantes, etc) en las que además interese dotar a la mezcla de conductividad eléctrica.
Fecha de Presentación internacional: 06.04.2006.- Titular:Consejo Superior de Investigaciones Científicas (CSIC).
Peer reviewed
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