Paper Information

Journal:   IRANIAN JOURNAL OF SURFACE SCIENCE AND ENGINEERING   AUGUST 2007 , Volume - , Number 3; Page(s) 77 To 88.
 
Paper: 

AN INVESTIGATION ON THE TRIBOLOGICAL BEHAVIOR OF AL/GRP COMPOSITES PRODUCED BY IN-SITU POWDER METALLURGY METHOD

 
 
Author(s):  ZARE BIDAKI M., AKHLAGHI F.
 
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Abstract: 

The tribological behavior of A12024/Grp composites containing 5-20 wt.% Graphite produced by in situ powder metallurgy method was investigated. The age-hardened composite samples were tested under dry and lubricated conditions by a pin-on-disk wear test machine. In order to investigate the effect of graphit content on the quantity of the mild to severe transition load different load were used (0.5-3.5MPa). The worn surface of samples as well as the wear debrises was studied by Scanninng Electron Microscopy (SEM). It was found that in the composite samples, due to the formation of a tribolayer, the wear rate and friction coefficient decrease dramatically as compared with the matrix alloy. The composites containing 5wt.% graphite exhibited the minimum wear rate. In composite samples lower wear rate together with a higher friction coefficient in dry wear test were observed as compared with the lubricated conditions.

 
Keyword(s): ALUMINUM-GRAPHITE COMPOSITES, IN-SITU POWDER METALLURGY, WEIGHT PERCENT OF GRAPHITE, WEAR RATE, FRICTION COEFFICIENT, DRY SLIDING TEST, LUBRICATED CONDITIONS
 
References: 
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