The effect of droplets in arc evaporated TiAlTaN hard coatings on the wear behavior

Evolution of residual stress in Ti–Al–Ta–N coatings on hard metal milling inserts

“…In the WC phase the found tensile residual stresses decreased and at end of lifetime the residual stress state was compressive [10]. Tkadletz et al found cracks around droplets, being inhomogeneities found in arc evaporated coatings [16], induced by shear stresses after ball on disc tests [17]. In both test setups, arising cutting forces may foster the introduction of this kind of cracks.…”

Effect of chamber pressure on defect generation and their influence on corrosion and tribological properties of HIPIMS deposited CrN/NbN coatings

“…However, a number of publications have shown the influence of defects on the tribological properties of the coatings [18,19]. So an additional study was conducted.…”

“…Any kind of growth defects are undesirable as these can restrain the coating functionality [17][18][19][20][21][22]. It can affect the surface roughness and surface finish, thus the tribological performance of the coatings can also be affected [18,19].…”

Growth defects in CrN/NbN coatings deposited by HIPIMS/UBM techniques

“…Any kind of growth defects are undesirable as they can restrain the coating functionality [2,4,7,11,14,44,103]. They can affect the surface roughness and surface finish thus the tribological performance of the coatings can also be affected [4,103]. During sliding, the applied force can smash the defects onto the coating surface [4].…”