Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
617611 | Wear | 2013 | 11 Pages |
Abstract
In developing materials with better tribological properties, it is always conceived that the addition of softer phase would result in better frictional behavior. In order to address this issue, we report here the results of fretting wear study on Cu-10Â wt% TiB2 and Cu-10Â wt% TiB2-10Â wt% Pb composites, sintered using spark plasma sintering (SPS) technique. It was found out that the addition of softer phase i.e. 10Â wt% Pb to Cu-10Â wt% TiB2 composites has not resulted in the lowering of the coefficient of friction (COF). The combination of steady state COF (0.6) and wear rate (10â3Â mm3/N-m) was measured and such properties are even better than that obtained with TiB2 coatings reported in the literature. For Cu-10Â wt% TiB2 sintered at different temperature, a lower wear resistance with increase in hardness is being measured. An attempt has been made to correlate the observed wear behavior with the surface and subsurface deformation. The formation of a wear-resistant delaminated tribolayer consisting of TiB2 particles and ultrafine oxide debris (Cu, Fe, Ti)xOy was the reason assigned for the observed low wear rate of these composites.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Amit S. Sharma, Nisha Mishra, Krishanu Biswas, Bikramjit Basu,