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The Effect of Grain Size on the Wear Behaviour of Mn-Zn Ferrite
Published January 01, 1987 by Institution of Mechanical Engineers in United Kingdom
Sliding-friction experiments are carried out with a Mn-Zn ferrite pin with average grain sizes of 10, 30, and 60 μm in contact with an iron disk in an ambient, dried air and argon atmosphere. The loads vary from 0.13 to 0.35 N and the sliding velocity is 2 m/s. The results indicate that wear resistance increases with increasing of the grain size. Chemical compositions of the wear debris by XMA show a slight change from their original state. AES analyses indicate that there are a tendency of Zn to decrease and a change of Mn oxidization state on the worn surface.