Measurement of residual stress in air plasma-sprayed Y2O3-ZrO2 thermal barrier coating system using micro-Raman spectroscopy

Date

2006-03-15

Author

Tanaka, Makoto
Hasegawa, Makoto
Dericioğlu, Arcan Fehmi
Kagawa, Yutaka

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

193
views

0
downloads

Residual stress in air plasma-sprayed Y2O3 stabilized ZrO2 thermal barrier coating (TBC) has been measured using micro-Raman spectroscopy. The frequency shift of Raman peak from tetragonal phase (approximate to 640 cm(-1)) is used for determination of local stress in TBC. The relation between Raman peak shift and applied uniaxial stress is measured using a freestanding specimen. The relation is used to determine actual residual stress of the TBC layer coated on a stainless steel substrate. The uniaxial stress, sigma(U)(thc) and Raman peak shift, Delta nu, on the freestanding TBC layer follows: Delta v = Pi sigma(U)(thc)(Pi = 25 cm(-1) GPA(-1)). The average in-plane residual stress in this layer is smaller than that obtained from thermal stress, although the trend of measured values versus thickness follows the estimated thermal stress-substrate thickness relation. This experimental evidence suggests that measurement by micro-Raman spectroscopy is an effective tool to determine local and average residual stress in the Y2O3 stabilized ZrO2 TBC layer.

Subject Keywords

Residual stress, Micro-Raman spectroscopy, Thermal barrier coating system, ZIRCONIA, LAYER

URI

https://hdl.handle.net/11511/33360

Journal

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

DOI

https://doi.org/10.1016/j.msea.2005.12.034

Collections

Department of Metallurgical and Materials Engineering, Article

Suggestions

OpenMETU
Core

Evaluation of the Effect of Spar Cap Fiber Angle of Bending-Torsion Coupled Blades on the Aero-Structural Performance of Wind Turbines Şener, Özgün; Gozc, M. Ozan; Kayran, Altan (ASME International, 2018-08-01) This paper presents a comprehensive study of the evaluation of the effect of spar cap fiber orientation angle of composite blades with induced bending–torsion coupling (IBTC) on the aero-structural performance wind turbines. Aero-structural performance of wind turbines with IBTC blades is evaluated with the fatigue load mitigation in the whole wind turbine system, tower clearances, peak stresses in the blades, and power generation of wind turbines. For this purpose, a full E-glass/epoxy reference blade has ...
Analysis of stress in a solid cylinder with periodic heat generation Varlı, Ekin; Eraslan, Ahmet Nedim; Department of Engineering Sciences (2015) Thermoelastic stress response of a periodic heat generating solid cylinder is investigated by analytical means. The cylinder is initially at zero temperature. For times greater than zero, heat is generated internally and slowly at a time dependent rate. Two periodic heat generation rates are used. The temperature distribution in the solid cylinder corresponding to each generation rate is obtained by making use of Duhamel’s theorem. An uncoupled thermoelastic solution of the solid cylinder is then obtained u...
Measurement of fractal properties of soot agglomerates in laminar coflow diffusion flames using thermophoretic sampling in conjunction with transmission electron microscopy and image processing Güvenç Yazıcıoğlu, Almıla; Campbell, A; Lee, KO; Choi, MY (2001-01-01) Aerosol property measurements including primary particle, radius of gyration, and number of primary particles per agglomerate have been performed for soot collected thermophoretically from the soot annulus at selected heights of laminar ethene/air, methane/air, and methane/oxygen diffusion flames and analyzed using a digital image processing technique. The fractal dimension D, and prefactor term k(f) calculated front these measurements were used to determine whether there exists it universality of these pro...
Analysis of the pressure fields in a swirling annular jet flow Perçin, Mustafa; van Oudheusden, B. W. (2017-12-01) In this paper, we investigate the flow structures and pressure fields of a free annular swirling jet flow undergoing vortex breakdown. The flow field is analyzed by means of time-resolved tomographic particle image velocimetry measurements, which enable the reconstruction of the three-dimensional time-resolved pressure fields using the governing flow equations. Both time-averaged and instantaneous flow structures are discussed, including a characterization of the first-and second-order statistical moments. ...
Analysis of thermomechanical cyclic behavior of unidirectional metal matrix composites Çöker, Demirkan; Nicholas, Theodore (1993-01-01) An analytical tool is developed to determine the three-dimensional stress state in a unidirectional composite subjected to axial loading and changes in temperature. A finite difference method is used to analyze a representative volume element of the composite which consists of concentric cylinders. The constituents are assumed to be elastic-plastic materials having temperature dependent properties. An iterative technique using the Prandtl-Reuss flow rule to determine incremental plastic strains is implement...

Citation Formats

M. Tanaka, M. Hasegawa, A. F. Dericioğlu, and Y. Kagawa, “Measurement of residual stress in air plasma-sprayed Y2O3-ZrO2 thermal barrier coating system using micro-Raman spectroscopy,” MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, pp. 262–268, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33360.