Study on insulation and stresses of TBCs on a turbine vane under ununiform temperature field

DOI

10.2991/mseee-17.2017.59How to use a DOI?

Keywords

thermal barrier coatings, insulation, stresses, turbine vane, ununiform temperature field.

Abstract

The paper focuses on insulation and stress of TBCs on a multilayer-coated blade considering ununiform temperature field. First the ununiform temperature field of TBCs was conducted by thermal-flow couple method. Then the thermal cycle residual stresses were modeled by holding the uniform temperature in the dwell step. It is found that the blade benefited more in substrate average temperature than the maximum temperature with top coating (TC) thickening, but the thickness of TC can only slightly affect the temperature fluctuation on TBCs surface. However, thickening TC produced higher normal stresses near the interface around the blade. It suggests that TBCs may suffers delamination near the interface due to residual stresses with TC thickening.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jianhua Liu
AU  - Yongbao Liu
AU  - Li Liu
PY  - 2017/08
DA  - 2017/08
TI  - Study on insulation and stresses of TBCs on a turbine vane under ununiform temperature field
BT  - Proceedings of the 2017 International Conference on Material Science, Energy and Environmental Engineering (MSEEE 2017)
PB  - Atlantis Press
SP  - 319
EP  - 326
SN  - 2352-5401
UR  - https://doi.org/10.2991/mseee-17.2017.59
DO  - 10.2991/mseee-17.2017.59
ID  - Liu2017/08
ER  -