Effect of Plasma Pretreatment on Thermal Durability of Thermal Barrier Coatings in Cyclic Thermal Exposure

Figure 3

Highly magnified microstructures at the interfaces of the top and bond coats in TBCs after cyclic thermal exposure tests for 381 cycles: (a) TBC-A, (b) TBC-B, (c) TBC-C, and (d) TBC-F.

(a)

(b)

(c)

(d)