The influence of surface deformation on mechanical wear

Wear and corrosion resistance of CrN/TiN superlattice coatings deposited by a combined deep oscillation magnetron sputtering and pulsed dc magnetron sputtering

“…Although the increased hardness of hard coatings exhibited a lower plastic deformation and a higher resistance to scratch during wear tests, the high toughness and low friction are required as important parameters in the tribological applications [16,17]. The occurrence of the elastoplastic deformation during sliding led to wear [18]. The wear particles generated by the surface plastic deformation failure can possibly act as an abradant to accelerate wear rate and to influence the wear mechanism for the coatings [15].…”

Relevance of Wavelet Shape Selection in a complex signal

“…It has been known that wear rate of materials is closely related to the grit size in "two-body abrasion" in relationship with the dimensions of the scratch profile. Nevertheless, a plastic deformation behavior of abraded material still has a strong effect on the wear process [25]. It can be inferred that the critical particle size effect can be explained directly from β factor because it shows the true fraction of cutting wear among the grooving materials.…”

A method for calculating boundary friction and wear

“…In order to predict with any precision the influence of contact conditions upon K, it is first necessary to have a satisfactory model of the mechanics of wear. One possibility, which has been suggested by several workers [2][3][4][5][6][7][8][9][10], is to calculate the surface plastic strain produced by asperity interaction, then to use a damage rule to relate it to the wear rate. This requires a model which predicts the extent and rate of strain due to sliding, and the amount of strain needed to produce wear particles.…”

“…Moreover, it has become clear that a rigid-plastic model of asperity interaction severely overestimates surface strains for most practical engineering surfaces, and that an elastoplastic Nomenclature A 1 +1/2π + 2ε + 2η − 2α a non-dimensional group B 1 + π/2 + 2(ε + sin ε cos ε − η − α) C strain to remove a wear particle in 1/4 cycle C a strain to remove a wear particle in 1/4 cycle for Al C b strain to remove a wear particle in Greek letters α attack angle ε angle in slip-line field ε p effective plastic strain (F.E.) γ e effective plastic shear strain (SLF) η angle in slip-line field µ coefficient of friction τ shear strength of interface (MPa) model is required [9]. Thus, the agreement found [2] must be explained by two erroneous assumptions cancelling each other out.…”