Table 7 Interfacial fracture toughness of TC/TGO, TGO/BC, TC/BC under different thermal oxidation conditions.

From: Research on crack propagation behaviour of EB-PVD TBCs based on TGO evolution

Oxidation Conditions

Kca/MPa·m1/2

TC/BC

TC/TGO

TGO/BC

As-received

2.99927

–

–

25 h

3.68376

2.96291

3.95032

25 cycles

2.26063

1.78850

2.37712

50 h

2.53231

2.10008

2.57289

50 cycles

2.09974

1.56103

2.09553

75 h

1.97878

1.65340

2.08879

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