A cumulative oxide growth model considering the deterioration history of thermal barrier coatings

Kim, Keekeun; Kim, Damhyun; Park, Kibum; Yun, Junghan; Jun, Namgyu; Seok, Chang-Sung

doi:10.1016/j.corsci.2021.109273

Cited by 4 publications

(2 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The BC is deposited as an intermediate layer to improve the adhesion between substrate and TC, meanwhile, protecting the substrate from oxidation and corrosion. [5][6][7] The TC, owning typically lower thermal conductivity than that of the substrate and BC, provides thermal insulation to the metallic parts. [8][9][10][11] Moreover, a thermally grown oxide (TGO) layer will form between BC and TC on account of the BC oxidation in service, which has been considered as an important factor for the TBCs degradation and failure.…”

Section: Introductionmentioning

confidence: 99%

“…In general, TBCs are the duplex system which are consisted of a metallic bond coat (BC) and ceramic top coat (TC). The BC is deposited as an intermediate layer to improve the adhesion between substrate and TC, meanwhile, protecting the substrate from oxidation and corrosion 5–7 . The TC, owning typically lower thermal conductivity than that of the substrate and BC, provides thermal insulation to the metallic parts 8–11 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of shot peening on microstructure, thermal performance, and failure mechanism of thermal barrier coatings

et al. 2022

View full text Add to dashboard Cite

Shot peening might be a potential technology to optimize the interface microstructure, plays a critical role on failure behaviors, of thermal barrier coatings (TBCs). It remains a significant challenge to understand the influence of shot peening on microstructure, oxidation resistance, and thermal shock life. In this work, the Y 2 O 3 -stabilized ZrO 2 TBCs have been deposited by EB-PVD. The phase, microstructure, thermal performance, and failure mechanism of TBCs have been systemically investigated after shot peening. The shot peening process can improve the planeness of interface and reduce the formation of the cauliflower-liked microstructure in TBCs. After shot peening, the TBC coatings exhibit relatively good isothermal oxidation resistance and high thermal shock life due to the optimization of TGO growth and the thermal stability. The phase transformation, TGO growth, and cracks extension might give rise to the failure of TBCs. This work might guide the investigation of the improvement of interface microstructure and failure behaviors.

show abstract