Microstructure and properties of aluminum brass with Ce

The processing abilities,structures and corrosion properties of the ceric aluminum brass and the arsenical aluminum brass were studied by means of metallographic analysis,microhardness measurement,mass loss measurement,electrochemical testing and scanning electron microscopy.The results show that the suitable hot-rolling temperature of the alloy with Ce is between 700 and 750 ℃;it has excellent cold-working capability,and the annealed structure is fine and homogeneous after annealing at 700 ℃ for 1 h;the recrystallization grains are about 50 μm.In the process of corrosion in 3.5% NaCl solution,the ceric aluminum brass forms a homogeneous and tight corrosion film on the surface,which can inhibit the diffusion of Zn from the surface of matrix to the solution,and restrain the dezincification to a certain degree.The corrosion resistance of the ceric aluminum brass is slightly better than that of the arsenical aluminum brass,the corrosion rate is 6.2×10?3 mm/a.