EB-PVD process management for highly productive zirconia thermal barrier coating of turbine blades

Reinhold, E.; Botzler, P; Deus, Carsten

doi:10.1016/s0257-8972(99)00344-8

Cited by 34 publications

(10 citation statements)

References 4 publications

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“…[19,20] State-of-the-art commercial production facilities are aimed at reducing the overall coating costs per coated article by increasing the number of coated components per coating charge, by extending the production cycle between maintenance stops, by simultaneously minimising the latter and by optimising the processing steps per coating run. Recently, some process improvements have been introduced such as electron beam pre-heating for large industrial components or in-line trolly installation for higher flexibility and throughput [15,21,22] or dual-source jumping beam evaporation for generation of new types of TBC. …”

Section: Competing Technologies For Thermal Barrier Coatings Depositionmentioning

confidence: 99%

EB-PVD Thermal Barrier Coatings for Aeroengines and Gas Turbines

Peters,

Leyens,

Schulz

et al. 2001

Adv. Eng. Mater.

162

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Section: Competing Technologies For Thermal Barrier Coatings Depositionmentioning

confidence: 99%

EB-PVD Thermal Barrier Coatings for Aeroengines and Gas Turbines

Peters,

Leyens,

Schulz

et al. 2001

Adv. Eng. Mater.

162

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“…For bulk materials, this technique has the advantage of being straightforward to perform, as sample preparation is simple and the measuring time is short [9][10][11][12][13][14][15]. However, the LF method is usually applied assuming the specimen to be uniformly dense and opaque.…”

Section: Introductionmentioning

confidence: 99%

Thermal conductivity of EB-PVD ZrO2–4mol% Y2O3 films using the laser flash method

Jang

Sakka

Yamaguchi

et al. 2011

Journal of Alloys and Compounds

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“…The pre-heating treatment, this treatment pre-heats the substrate to a given temperature level by using the radiation heating or the electron beam heating methods before the coating deposition process [27]. Previous works show that this treatment has a significant effect on the coating/substrate interface properties, residual stress distributions and thermal shock resistance ability [27–29]. As mentioned above, a high level residual stress will be generated in the fabrication of DCL-TBCs, therefore, it is of great significance to investigate the effect of pre-heating treatment on residual stress generation in the fabrication of DCL-TBCs.…”

Section: Introductionmentioning

confidence: 99%

A Theoretical Model for Predicting Residual Stress Generation in Fabrication Process of Double-Ceramic-Layer Thermal Barrier Coating System

Song

Xie

et al. 2017

PLoS ONE

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Residual stress arisen in fabrication process of Double-Ceramic-Layer Thermal Barrier Coating System (DCL-TBCs) has a significant effect on its quality and reliability. In this work, based on the practical fabrication process of DCL-TBCs and the force and moment equilibrium, a theoretical model was proposed at first to predict residual stress generation in its fabrication process, in which the temperature dependent material properties of DCL-TBCs were incorporated. Then, a Finite Element method (FEM) has been carried out to verify our theoretical model. Afterwards, some important geometric parameters for DCL-TBCs, such as the thickness ratio of stabilized Zirconia (YSZ, ZrO2-8%Y2O3) layer to Lanthanum Zirconate (LZ, La2Zr2O7) layer, which is adjustable in a wide range in the fabrication process, have a remarkable effect on its performance, therefore, the effect of this thickness ratio on residual stress generation in the fabrication process of DCL-TBCs has been systematically studied. In addition, some thermal spray treatment, such as the pre-heating treatment, its effect on residual stress generation has also been studied in this work. It is found that, the final residual stress mainly comes from the cooling down process in the fabrication of DCL-TBCs. Increasing the pre-heating temperature can obviously decrease the magnitude of residual stresses in LZ layer, YSZ layer and substrate. With the increase of the thickness ratio of YSZ layer to LZ layer, magnitudes of residual stresses arisen in LZ layer and YSZ layer will increase while residual stress in substrate will decrease.

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EB-PVD process management for highly productive zirconia thermal barrier coating of turbine blades

Cited by 34 publications

References 4 publications

EB-PVD Thermal Barrier Coatings for Aeroengines and Gas Turbines

EB-PVD Thermal Barrier Coatings for Aeroengines and Gas Turbines

Thermal conductivity of EB-PVD ZrO2–4mol% Y2O3 films using the laser flash method

A Theoretical Model for Predicting Residual Stress Generation in Fabrication Process of Double-Ceramic-Layer Thermal Barrier Coating System

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