Influence of the Chemical Composition in the Electrochemical Response of Permanent Magnets

Figure 14

Superficial aspects of NdPr magnets after corrosion tests for 24 hours in 3.5% NaCl solution at 25°C: (a) 30Nd6Pr, (b) 30Nd8Pr, and (c) 30Nd10Pr.

(a)

(b)

(c)