The impact of boron nitride (BN) on tribological behaviour of AZ84 magnesium matrix composites

In this experimental work, evaluate the effect of BN on AZ84 Magnesium alloy composite. The results of testing exposed the higher tribological properties of the composites compared to the unreinforced alloy due to the enhanced BN particle. The BN particulate concentration increased, the wear resistance of composites increased, and wear rate decreased significantly compared to material matrix alloys. On a mechanical insulation layer which prevents metal contact the surface has a mechanically mixed oxygen and iron layer. With an increased BN content the coefficient of friction is decreased and reached minimum at its 9 vol% BN.