الفهرس 
LITERATURE REVIEWOnly 14 pages are availabe for public view
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Abstract
Gears made from polymers have been widely used in industrial applications due to several advantages such as weight reduction, self lubrication, noise reduction, cost saving and low tribological characteristics i.e. wear and friction coefficient.
The main objective of this research is to study the wear behavior of polyamide (Nylon6) reinforced with multi walled carbon nanotubes (MWCNTs) spur gears. The dispersion of MWCNTs was made by using paraffin adhesive oil during injection molding practice. MWCNTs were produced by using fully automatic system using an arc discharge technique multi electrodes. The MWCNT/Nylon flanges synthesized with various percentages of MWCNTs, i.e. 0.1%,0.2%,0.3% wt. The dispersion of carbon nanotubes inside composite is examined by high emission electron microscope . The specimens in form of spur gears are fabricated by a flanges of diameter 135 mm and thickness 29 mm which then produced by hopping machine. Mechanical and wear tests are conducted to evaluate the effect of MWCNTs as a reinforcement in Nylon6 for gears applications .
The results showed that a decrease in the wear rate for all spur gears are archived by adding MWCNTs, i.e. increasing the percentage of MWCNTs decreases the wear rate . In addition, increasing MWCNTs percentage results in an increase in strength, stiffness, hardness and modules of elasticity but decreases the elongation was property.