Role of monodispersed nanoparticles on the tribological behavior of conventional epoxy composites filled with carbon fibers and graphite lubricants

Exploring the potential of Raman spectroscopy for the identification of silicone oil residue and wear scar characterization for the assessment of tribofilm functionality

“…The latter material consists of an epoxy (EP) matrix with 10 vol% of short carbon fibers (SCF), 8 vol% graphite and 5 vol % silica nanoparticles (SNP). A previously published paper described the tribological properties of this material [3]. Since only acetone-cleaned discs were considered during this previous study, we repeated the tests with freshly ground discs.…”

“…Discs made of 100Cr6 are widely used as counterbodies for all kinds of polymer matrix composites (PMCs) by the present authors [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] and others as well. The steel discs are usually supplied with a grinded surface providing an average surface roughness of R a ¼ 0.3 mm.…”

“…Finally, the third objective of this study was to supplement our knowledge on the structure of beneficial tribofilms formed during pin-on-disc tests of hybrid polymer matrix composites (PMCs) at high pv-values [1][2][3]. Previous studies with SEM/EDS [5] and TEM/ EDS [4] revealed the importance of silica nanoparticles (SNPs) for film formation, but the extent to which carbonaceous species contribute to tribofilm structure and functionality were not scrutinized.…”

Corrosion resistance of superhydrophilic and superhydrophobic TiO2/epoxy coatings on AISI 316L stainless steel

“…[7][8][9][10][11][12][13][14][15][16] It is mainly the favourable effects of the particle size, the volume fraction and the size distribution on the mechanical properties of composite coatings that have been studied. [17][18][19][20][21][22] Z. Rubab et al showed that sub-micron TiO 2 particles significantly enhance the glass-transition temperature, thermal oxidative stability, tensile strength and Young's modulus of epoxy polymers.…”

Tribological response of an epoxy matrix filled with graphite and/or carbon nanotubes

“…The characteristic that makes epoxy composites promising in many applications is the possibility to control their properties by adding special fillers with different volume fractions, shapes, and sizes [13,14]. The integration of well-dispersed carbon particles into an epoxy matrix has been demonstrated to be quite effective at improving the performance of epoxy composites, including their tribological properties [15]. It has been found that nano-and micro-sized carbon particles can be used to modify the tribological properties of polymeric materials [16].…”