Soft Magnetic Composites (SMCs) typically consist of large iron particles coated with a fairly
thin inorganic layer. The combination of soft particles with a brittle layer causes however a
rather poor mechanical behaviour of the SMCs. The particle boundaries of the specific SMC
Somaloy 700 3P can be classified into four different types according to the complexity of their
layers. Tests on both micro- and macroscale showed that the particle-boundary interface is
critical in terms of failure.
