Effect of spatial distribution of graphite and matrix on dry sliding wear of cast irons

摘要

In the selection of cast irons for sliding applications, the manner in which graphite and matrix are spatially distributed is an important factor. A Poisson distribution for graphite count and an exponential distribution for graphite size and matrix length along a line seem to be the ideal required characteristics. Of the five irons studied (three ductile irons, one flake graphite iron, and one vermicular graphite iron), only grey (flake graphite) iron satisfies the above criteria to a certain extent.