Isolation of the intermetallic compounds Al2Cu, Al12Mg17 Al3Fe, Al9Co2 and Al3Ni in binary aluminium alloys by application of an organic solvent

For the isolation of the intermetallic compounds Al2Cu, Al12Mg17, Al3Fe, Al9Co2 and Al3Ni in their binary alloys a new method is proposed: Sample alloy particles are placed in a flask with a methanolic solution of benzoic acid (20% wt.), oxine (5% wt.), chloroform (20% vol.) and sodium hydroxide (0.02% wt.). After sufficient time of agitation, the intermetallic compounds remain quantitatively in the solution.