Relation Between Inter-Particle Distance (L-IPD) and Abrasion in Multiphase Matrix-Carbide Materials

Five different carbide-matrix coatings (laser claddings) have been investigated about correlation of their specific structural parameters-especially volumetric carbide distribution-with ASTM G65 abrasion wear rates. For this study, the hardphase networks of laser claddings have been characterized by specific structural parameters, such as mean inter-particle distance, mean carbide diameter, carbide area fraction, and matrix hardness. To generate quantitative values for the inter-particle distances a particular method was developed. From regression analyses, it has become evident that wear effects arising from carbide inter-particle distance surpass the influence of carbide diameter and that of carbide fraction. Only minor contribution to abrasive wear rates is related with matrix hardness.