Water-Quenching Thermal Shocking Property of Sm₂Zr₂O₇/NiCoCrAlY Function Grade Thermal Barrier Coatings

Abstract:

In the present manuscript, the influence of interface location, coating structure (layer number) and layer-material composition on water-quenching thermal-shocking property of Sm2Zr2 O7/NiCoCrAlY functional graded thermal barrier coatings (TBCs) were investigated using finite element method. Results show that radial thermal stress at surface of top-layer have the highest value. Radial thermal stress in TBCs decrease gradually with increase of layer number, and function graded TBCs have better thermal-shocking resistance compared with other TBCs. 1357 function graded TBCs have the most excellent thermal shocking resistance in these investigated TBCs in the current manuscript.

• Periodical: Key Engineering Materials (Volume 537)
• Pages: 101-104
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.537.101
• Online since: January 2013
• Authors: Xin Li Wang, Jian Ping Bi
• Keywords: Finite Element Method (FEM), Thermal Barrier Coating (TBC), Thermal Shocking

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