High Temperature Friction and Wear Performance of PVD Coatings under Press Hardening Contact Conditions

Figure 10

Scanning electron micrographs at tilting angle in secondary mode of (a) the entrance to the contact (converging gap) on one and (b) the exit of the contact (diverging gap) on another TiAlN coated tool steel pin and (c) of the edge of the material transfer layer on an AlCrN 1 coated tool steel pin after sliding against Al-Si coated 22MnB5 steel; arrows indicate the sliding direction.

(a)

(b)

(c)