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Cu 60 Zn 40 powders, as grain boundary modifiers, were added into Nd 28.2 Dy 2.0 Fe bal Al 0.1 Nb 0.2 Ga 0.11 B 0.96 sintered magnets to improve the corrosion resistance of magnets. The corrosion resistance of magnets was investigated by polarization curve measurements in 3.5wt% NaCl and 3.0wt% NaOH solutions. It was found that...