Thermal Conductivity of Nano-Pore Dispersed Y-PSZ Fabricated by EB-PVD

Abstract:

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ZrO2-4mol% Y2O3 coatings on zirconia substrate were deposited by EB-PVD. Influence of the coating thickness on thermal conductivity and thermal diffusivity of coated samples is examined. The fractured surface of the coated samples reveals a columnar microstructure consisting of feather-like structure. We have adopted a laser flash method for thermal diffusivity and specific heat capacity of coated samples. It was found that the thermal conductivity of the coating layers was strongly dependent on coating thickness. The thermal conductivity of coating layers shows increasing tendency with increasing the coating thickness.

Info:

Periodical:

Key Engineering Materials (Volumes 317-318)

Edited by:

T. Ohji, T. Sekino and K. Niihara

Pages:

509-512

DOI:

10.4028/www.scientific.net/KEM.317-318.509

Citation:

B. K. Jang et al., "Thermal Conductivity of Nano-Pore Dispersed Y-PSZ Fabricated by EB-PVD", Key Engineering Materials, Vols. 317-318, pp. 509-512, 2006

Online since:

August 2006

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Price:

$35.00

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[1] [2] 0 100 200 300 400 500 600 700.

[1] [2] 0 100 200 300 400 500 600 700 Coating thickness (µm) Thermal conductivity (W/m⋅k).

[10] [20] [30] [40] [0] 100 200 300 400 500 600 700 Coating thickness (µm) Column boundaries (N).

[20] [40] [60] [80] 100 0. 001 0. 01 0. 1 1 10 100 Pore diameter (µm) Cumulative pore volume (%).

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