majid Mokarizadeh - Graduate Student Department of materials science and engineering, School of engineering, Shiraz University, Shiraz, Iran
Seyed Mojtaba Zebarjad - Professor, Department of materials science and engineering, School of engineering, Shiraz University, Shiraz, Iran
Ramin Ebrahimi - Professor, Department of materials science and engineering, School of engineering, Shiraz University, Shiraz, Iran

Surface modified multi-walled carbon nanotubes (MWCNTs) were added to high density polyethylene (HDPE) to enhance its mechanical and tribological properties. CNT/HDPE composites were fabricated by mechanical jar milling of MWCNTs and HDPE powders, followed by compression molding of the composite powder. This fabrication process resulted in uniform dispersion of CNTs in the matrix. Vickers microhardness evaluation indicated gradual increase in hardness by incorporation of CNTs. Pin on disc wear tests was performed to evaluate tribological properties of the fabricated samples. The results showed that addition of CNTs decreased average mass loss and increased coefficient of friction of HDPE. Worn surfaces also were observed and analyzed by scanning electron microscope (SEM) in order to explain the changes in tribological properties

Carbon nanotubes, high density polyethylene, Tribological properties, wear