3. Introduction
AZ63 magnesium alloy is a two-phase alloy whose second phase plays two
functions during corrosion. Namely, it can act as a galvanic cathode or as a
corrosion barrier. Mg17Al12 phase is relatively stable and has a lower corrosion
rate in the 3.5 wt. % NaCl solution.
4. Introduction
Magnesium alloy developments have traditionally been driven by aerospace industry
requirements for lightweight materials to operate under increasingly demanding
conditions. Magnesium alloys have always been attractive to designers due to their
low density, only two thirds that of aluminum. This has been a major factor in the
widespread use of magnesium alloy castings
5. Physical Properties Of Magnesium
Magnesium is silvery white and very light. Its density is1740 kg/m3.
Magnesium is known for a long time as the lighter structural metal in the industry, due to it's
low weight and to it's capability of forming mechanically resistant alloys.
Good to excellent corrosion resistance.
Low density (two thirds that of aluminum).
