TY  - JOUR
TI  - DRY SLIDING FRICTION and WEAR PROPERTIES of CaCO3 NANOPARTICLEFILLED EPOXY/CARBON FIBER COMPOSITES
AB  - Metal/Fiber-reinforced polymer (FRP) composite joints with lower coefficients of friction are increasingly replaced metal-metal couples in a variety of fields. The wear performance of metal/FRP tribo-contacts becomes a key design parameter for their service life, and the improvement in the wear performance of metal-FRP friction pairs is needed to extend their applications. In this paper, sliding friction and wear characteristics of carbon fiber (CF) reinforced epoxy composites against metallic counterparts were investigated. Tests were performed on a ball-on-disk tester at a constant normal load and velocity against chromium steel under dry ambient. Moreover, calcium carbonate (CaCO3) nano reinforcements were introduced into Epoxy/CFcomposites to improve their wear performance. The coefficient of friction (65%) and the specific wear rate (75%) were drastically reduced with the addition of CaCO3 nano reinforcements. Worn surfaces were analyzed by scanning electron microscopy (SEM) to evaluate the wear mechanisms. It was concluded that the abrasion dominated wear mechanism of the neat Epoxy/CF composites transformed into adhesion for the multi-scale composites with the addition of cubic CaCO3 nanoparticles, which is responsible for the increased wear performance of neat Epoxy/CF composites. This impact was most likely attributed to two main factors: “nano CaCO3 particles facilitate sliding” and “act as a solid lubricant”.
AU  - Sukur, Emine Feyza
DO  - 10.28948/ngumuh.725631
PY  - 2020
JO  - Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi
VL  - 9
IS  - 2
SN  - 2564-6605
SP  - 1108
EP  - 1117
DB  - TRDizin
UR  - http://search/yayin/detay/417819
ER  -