Abstract
The use of magnesium and its alloy is increased in biomedical and automobile applications with advantages of higher strength to weight ratio and good biocompatibility. In the present work, the effect of addition of Calcium on microstructural and tribological behaviour have been studied. In Mg-Al-Ca ternary system, alloying element amount were varied i.e. Ca in the range of 1%-6% and Al in the range of 3%-8%. For uniform distribution of phases, alloying has been done by stir casting with atmosphere controlled furnace. The microstructure analysis were carried out by optical microscopy to study the intermetallic compounds formed during solidification along with wear study performed on pin-on-disc tribometer. Wear analysis showed that addition of Ca improved the wear resistance due to formation of stable compounds of Mg2Ca and (Mg, Al)2Ca intermetallic phases.
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