Abstract
An experimental investigation is conducted on hybrid nanofillers of multi-wall carbon nanotubes (MWCNTs) and alumina (Al2O3) on the tribological performance of pure epoxy nanocomposites for various weight fraction of 0.5, 1.0, 1.5, 2.0 and 2.5wt.% hybrid nanofillers. The hybrid ratio of MWCNTs-Al2O3 is maintained at 1:4. MWCNTs- Al2O3 hybrid reinforced pure epoxy matrix composites were prepared by sonication process. Wear and friction tests against steel disc show that, the introduction of 0.5, 1.0 and 1.5wt.% of MWCNTs-Al2O3 hybrid nanofillers will increases the specific wear resistance and decrease the friction coefficient. At an optimal hybrid nanofillers, i.e., 1.5wt.% addition of hybrid nanofillers in pure epoxy result in 85%, 82% and 81% improved wear resistance during low (30N), moderate (45N) and high (60N) loading conditions respectively than that of pure epoxy. Further addition of nanofillers content will lead to increase in specific wear rate and friction coefficient was observed. Microstructure studies demonstrated the homogeneous dispersion and aggregation of MWCNTs and alumina in the host matrix. Field emission scanning electron microscopy (FESEM) is used to study the worn surface morphology..
Keywords
Hybrid, Polymer-matrix composites, Wear, Nanocomposites and FESEM.
Citation
P. N. KARTHIKEYAN, B. GANESH BABU, C. SABARINATHAN, J. MANIKANDAN, Tribological performance of carbon nanotubes-alumina hybrid/epoxy composites, Optoelectronics and Advanced Materials - Rapid Communications, 9, 3-4, March-April 2015, pp.455-459 (2015).
Submitted at: March 8, 2015
Accepted at: March 19, 2015