Abstract
Copper-tin alloy with the addition of tungsten disulfide (WS2), prepared through powder metallurgical route is widely used in weaving and aircraft industries as bearings and bushes. Incorporation of WS2 helps to reduce sliding contact between machine components, especially where no grease and oil lubricant used. Bronze—WS2 sintered composite with a different volume percentage of WS2 at the different constituents of the copper-tin alloy and at varying compaction load was produced. The sintered composite exhibits that reduce in porosity as well as increase in relative density. The related terms like theoretical, green, sintered and relative density of the composite were calculated. It was concluded that the porosity of the composites decreased with a rise in the volume percentage of WS2. The effect of variation in the composition of bronze, volume of WS2 content and compaction load on the tribological behavior of the composites was investigated. It was observed that the hardness of the composites decreased with the increase in volume percentage of WS2 and increased with the increase in compaction load. The scratch test for all the specimens as a constant load of 10 N was conducted and scratch width, the coefficient of friction, wear loss were measured and reported.
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