Thin Films, Materials Surface & Interfaces
Bougoffa M. Seyf Eddine; Sayhia Benchaa
Abstract
The paper examines the influence of initial surface roughness and sliding speed on friction and wear behavior of AA6061 aluminum alloy and brass alloy (CuZn37Pb2) under dry contact using a CSM tribometer. Surface roughness of materials studied were measured using optical profilometer. Rough surfaces ...
Read More
The paper examines the influence of initial surface roughness and sliding speed on friction and wear behavior of AA6061 aluminum alloy and brass alloy (CuZn37Pb2) under dry contact using a CSM tribometer. Surface roughness of materials studied were measured using optical profilometer. Rough surfaces (Ra=0.37 - 1.33 μm) were prepared on two materials: AA6061 and CuZn37Pb2 alloy. Track width, wear rate, and wear loss values were assessed and contrasted with changes in coefficient of friction values at various starting surface roughness and sliding speeds. Experiments are conducted at sliding speed 0.15;0.24;0.35 and 0.48 m/s. wear track diameter 4;6;8;10 mm. Results show that wear loss, wear rate and track width of CuZn37Pb2 and AA6061 increase at high initial surface roughness and speed but the value of friction coefficient decreases. Various SEM analysis of the wear trace and worn surfaces for each alloy at different sliding speed were analysed and compared.

Bougoffa M. Seyf Eddine; T. Sayah; Bachir Bey M. Nabil; Benouali Chahrazed
Abstract
The paper evaluates and compares the friction and wear behavior of SAE-AISI 1060 steel and brass (CuZn37Pb2) at different initial surface roughness and normal load using pin-on-disc test. Tribological behavior of studied materials was analyzed in detail. Variation of coefficient of friction at different ...
Read More
The paper evaluates and compares the friction and wear behavior of SAE-AISI 1060 steel and brass (CuZn37Pb2) at different initial surface roughness and normal load using pin-on-disc test. Tribological behavior of studied materials was analyzed in detail. Variation of coefficient of friction at different initial surface roughness and normal load has been correlated with wear loss, wear rate, track width. Experiments are carried out in normal load 3-5-8-10 N, sliding speed 0.24-0.35m/s and 0.48 m/s, wear track diameter 4-6-8-10 mm. Results show that friction coefficient, wear loss and wear rate of steel increase with track width at high initial surface roughness and normal load. For brass friction coefficient decreases with the increase of normal load. On the other hand, it is also found that wear loss, wear rate and track width increase with sliding distance. Microscopic of worn surfaces for each alloy were carried out and compared.
