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Tensile properties of PM 2124 aluminium composites reinforced with Ni 3 Al, NiAl, Cr 3 Si and MoSi 2 intermetallic powder particles have been investigated in tempering conditions T1 and T4. Intermetallics were produced by SHS and composite powders consolidated by extrusion. 2124/MoSi 2 showed the highest thermal stability, and the best mechanical properties even after comparison with those of 2124/SiC composite after processing through the same route.

This research studied the influence of the chloride ion concentration on the corrosion behaviour of high-purity magnesium (Mg) and two Mg alloys in Hank's solution, using hydrogen evolution and weight loss. A buffer based on CO2 and NaHCO3 was used to maintain the pH constant. The corrosion behaviour was governed by a partially protective surface film, and film breakdown by the chloride ions. The carbonated calcium phosphate layer that formed in Hank's solution was important in determining the protective properties of the surface film.

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