Effects of residual stress on thickness and interlayer of thermal barrier ceramic MgO-ZrO2 coatings on Ni and AlSi substrates using finite element method

Ozkan Sarikaya; Erdal Celik; Erdal Celik

doi:10.1016/S0261-3069(02)00047-X

Effects of residual stress on thickness and interlayer of thermal barrier ceramic MgO-ZrO₂ coatings on Ni and AlSi substrates using finite element method

Ozkan Sarikaya, Erdal Celik, Erdal Celik

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

Thermal analysis evolution of MgO-ZrO₂/NiCrAlY coatings on Ni metal and AlSi alloy (LM13) substrates was studied. MgO-ZrO₂/NiCrAlY coatings were deposited on metallic substrates using an atmospheric plasma spray technique. The coatings were characterized by optical microscope and scanning electron microscope. Thermal loadings were applied to the model at the temperature range 800-1000 °C using finite element method. Methollographic examinations pointed out that coatings possessed porosity, oxide, unmelted and semi-melted particle, and inclusion. Finite element calculations showed that stress concentration was at higher levels in the coatings with AlSi substrates than that of Ni. It was also found that the larger residual stresses were obtained with an increase of the coating thickness and interlayer bond coatings decreased residual stresses.

Original language	English
Pages (from-to)	645-650
Number of pages	6
Journal	Materials and Design
Volume	23
Issue number	7
DOIs	https://doi.org/10.1016/S0261-3069(02)00047-X
Publication status	Published - Oct 2002
Externally published	Yes

Keywords

Finite element
Plasma spray

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10.1016/S0261-3069(02)00047-X

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title = "Effects of residual stress on thickness and interlayer of thermal barrier ceramic MgO-ZrO2 coatings on Ni and AlSi substrates using finite element method",

abstract = "Thermal analysis evolution of MgO-ZrO2/NiCrAlY coatings on Ni metal and AlSi alloy (LM13) substrates was studied. MgO-ZrO2/NiCrAlY coatings were deposited on metallic substrates using an atmospheric plasma spray technique. The coatings were characterized by optical microscope and scanning electron microscope. Thermal loadings were applied to the model at the temperature range 800-1000 °C using finite element method. Methollographic examinations pointed out that coatings possessed porosity, oxide, unmelted and semi-melted particle, and inclusion. Finite element calculations showed that stress concentration was at higher levels in the coatings with AlSi substrates than that of Ni. It was also found that the larger residual stresses were obtained with an increase of the coating thickness and interlayer bond coatings decreased residual stresses.",

keywords = "Finite element, Plasma spray",

author = "Ozkan Sarikaya and Erdal Celik and Erdal Celik",

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T1 - Effects of residual stress on thickness and interlayer of thermal barrier ceramic MgO-ZrO2 coatings on Ni and AlSi substrates using finite element method

AU - Sarikaya, Ozkan

AU - Celik, Erdal

PY - 2002/10

Y1 - 2002/10

N2 - Thermal analysis evolution of MgO-ZrO2/NiCrAlY coatings on Ni metal and AlSi alloy (LM13) substrates was studied. MgO-ZrO2/NiCrAlY coatings were deposited on metallic substrates using an atmospheric plasma spray technique. The coatings were characterized by optical microscope and scanning electron microscope. Thermal loadings were applied to the model at the temperature range 800-1000 °C using finite element method. Methollographic examinations pointed out that coatings possessed porosity, oxide, unmelted and semi-melted particle, and inclusion. Finite element calculations showed that stress concentration was at higher levels in the coatings with AlSi substrates than that of Ni. It was also found that the larger residual stresses were obtained with an increase of the coating thickness and interlayer bond coatings decreased residual stresses.

AB - Thermal analysis evolution of MgO-ZrO2/NiCrAlY coatings on Ni metal and AlSi alloy (LM13) substrates was studied. MgO-ZrO2/NiCrAlY coatings were deposited on metallic substrates using an atmospheric plasma spray technique. The coatings were characterized by optical microscope and scanning electron microscope. Thermal loadings were applied to the model at the temperature range 800-1000 °C using finite element method. Methollographic examinations pointed out that coatings possessed porosity, oxide, unmelted and semi-melted particle, and inclusion. Finite element calculations showed that stress concentration was at higher levels in the coatings with AlSi substrates than that of Ni. It was also found that the larger residual stresses were obtained with an increase of the coating thickness and interlayer bond coatings decreased residual stresses.

KW - Finite element

KW - Plasma spray

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ER -

Effects of residual stress on thickness and interlayer of thermal barrier ceramic MgO-ZrO₂ coatings on Ni and AlSi substrates using finite element method

Abstract

Keywords

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