Formation of aluminium nitride during sintering of powder injection moulded aluminium
D Kent, G Schaffer, M Qian, Z Liu
Materials Science Forum | Published : 2009
A TEM study of aluminium nitride formed during sintering of powder injection moulded aluminium under nitrogen is presented. A polycrystalline layer consisting of fine, rod-shaped crystallites of hexagonal AlN formed on the Al powder surfaces. The grain boundaries exhibit a double layer of AlN separated by a thin layer of Al. The structure of the AlN is characterised and its influence upon sintering discussed.