Tribological characterisation in dry sliding conditions of compocasted hybrid A356/SiCp/Grp composites with graphite macroparticles
Abstract
The influence of SiC microparticles reinforcement and graphite macroparticles addition on the friction and wear characteristics of A356 Al-Si alloys, produced by compocasting, has been assessed using a pin-on-disc tribometer. The incorporation of SiC reinforcement increased the coefficient of friction and reduced the wear. The addition of graphite did not reduce the coefficient of friction. In the case of hybrid composite with 1 wt% graphite, wear was more or less the same as with SiC reinforced composite, while in the case of hybrid composite with 3 wt% graphite, wear was further reduced. On the worn surfaces of hybrid composites, the presence of the discontinuous mixed surface layer, containing graphite and transferred counter-body material, was noticed.
Keywords:
Friction / Graphite / Hybrid composites / WearSource:
International Journal of Advanced Manufacturing Technology, 2019, 100, 9-12, 2135-2146Publisher:
- Springer London
Projects:
- Investigation and Optimization of the Technological and Functional Performance of the Ventilation Mill in the Thermal Power Plant Kostolac B (RS-34028)
- Development of the tribological micro/nano two component and hybrid selflubricating composites (RS-35021)
- Developed new methods for diagnosis and examination mechanical structures (RS-35040)
- The effect of nano- and microconstituents on the synthesis and characteristics of novel composite materials with metal matrix (RS-172005)
DOI: 10.1007/s00170-018-2866-0
ISSN: 0268-3768