An investigation of the structure of powder metallurgy iron with different porosities by scanning electron microscopy

Model of Fracture, Friction, and Wear Phenomena of Porous Iron

“…As seen from Figure 9, the function I h (P) is nonmonotonic over the entire range of variation of P n . A similar result for the constant values of pressure and a wide range of P was experimentally obtained in [55]. Good agreement between the values of the coefficients A and n with the published data [71] and a satisfactory approximation of the experimental results confirm the correctness of the approach adopted for the study of porous iron.…”

“…Some factors mentioned could be eliminated as a result of using pure iron [21,54,55]. But high content of impurities in industrial iron powder, insufficient porous structure description, and narrow ranges of the test pressure variation are the reasons of determination impossibility of the contribution of each measured parameters with high reliability.…”

“…Features of porous materials [55,64,65] allow us to relate the friction surface characteristics and the material structure with wear resistance, Table 4, Figure 9. Iron wear during dry friction on steel is a fatigue wear [66,67].…”