Indentation method for fracture resistance determination of metal/ceramic interfaces in thick TBCs |
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| Authors: | R Dal Maschio V M Sglavo L Mattivi L Bertamini S Sturlese |
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| Affiliation: | (1) Dipartimento di Ingegneria Dei Materiali, Universita Degli Studi Di Trento, Via Mesiano77, 38050 Trento, Italy;(2) C.S.M. Cire di Pergine, Trento, Italy;(3) C.S.M. S.p.A., P.O. 10747, Roma Eur, Italy |
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| Abstract: | The indentation technique has been used to measure the adhesion of plasma- sprayed ceramic coatings on metals intended for
thick thermal barrier coating ( TTBC) applications. This approach provides the adhesion value as the critical strain energy
release rate,Gc, of the interface, which also takes into account any residual stresses. The theoretical background of the method is outlined,
and specific examples are reported with respect to the effect of substrate temperature on the metal/ceramic adhesion of thick
TBCs. |
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| Keywords: | adhesion fracture toughness indentation methods interface properties substrate temperature thermal barrier coatings yttria-stabilized zirconia ttbcs vickers indentation |
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