Structure dependence of thermal conductivity of plasma-sprayed zirconia coatings

Y. Xu; H. B. Guo; H. Murakami; S. Kuroda; M. Yamazaki

Structure dependence of thermal conductivity of plasma-sprayed zirconia coatings

Y. Xu^*, H. B. Guo, H. Murakami, S. Kuroda, M. Yamazaki

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Pores included in plasma-sprayed zirconia coatings have been classified into four types: inter-splat cracks, globular pores, segment cracks and branch cracks, according to the dimension, geometry and formation mechanism of the pores. Thermal conductivities of three samples produced under different atmospheric plasma spraying conditions with similar total porosity but different volume fractions of each type of pores were measured. Different thermal conductivities were observed. Dependences of thermal conductivity on volume fraction of each type of pores and the geometry of the pores were simulated by a multi-stepped finite element method, which shows that effect of pores on thermal conductivity depends on the shape and dimension of the pores.

Original language	English
Title of host publication	Proceedings of the 30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18
Pages	393-402
Number of pages	10
Publication status	Published - 2010
Externally published	Yes
Event	30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18 - Pittsburgh, PA, United States Duration: 2009 Aug 29 → 2009 Sept 2

Publication series

Name	Proceedings of the 30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18

Other

Other	30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18
Country/Territory	United States
City	Pittsburgh, PA
Period	09/8/29 → 09/9/2

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology

Cite this

Xu, Y., Guo, H. B., Murakami, H., Kuroda, S., & Yamazaki, M. (2010). Structure dependence of thermal conductivity of plasma-sprayed zirconia coatings. In Proceedings of the 30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18 (pp. 393-402). (Proceedings of the 30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18).

Structure dependence of thermal conductivity of plasma-sprayed zirconia coatings. / Xu, Y.; Guo, H. B.; Murakami, H. et al.

Proceedings of the 30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18. 2010. p. 393-402 (Proceedings of the 30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Xu, Y, Guo, HB, Murakami, H, Kuroda, S & Yamazaki, M 2010, Structure dependence of thermal conductivity of plasma-sprayed zirconia coatings. in Proceedings of the 30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18. Proceedings of the 30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18, pp. 393-402, 30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18, Pittsburgh, PA, United States, 09/8/29.

Xu Y, Guo HB, Murakami H, Kuroda S, Yamazaki M. Structure dependence of thermal conductivity of plasma-sprayed zirconia coatings. In Proceedings of the 30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18. 2010. p. 393-402. (Proceedings of the 30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18).

Xu, Y. ; Guo, H. B. ; Murakami, H. et al. / Structure dependence of thermal conductivity of plasma-sprayed zirconia coatings. Proceedings of the 30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18. 2010. pp. 393-402 (Proceedings of the 30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18).

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abstract = "Pores included in plasma-sprayed zirconia coatings have been classified into four types: inter-splat cracks, globular pores, segment cracks and branch cracks, according to the dimension, geometry and formation mechanism of the pores. Thermal conductivities of three samples produced under different atmospheric plasma spraying conditions with similar total porosity but different volume fractions of each type of pores were measured. Different thermal conductivities were observed. Dependences of thermal conductivity on volume fraction of each type of pores and the geometry of the pores were simulated by a multi-stepped finite element method, which shows that effect of pores on thermal conductivity depends on the shape and dimension of the pores.",

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AU - Guo, H. B.

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AB - Pores included in plasma-sprayed zirconia coatings have been classified into four types: inter-splat cracks, globular pores, segment cracks and branch cracks, according to the dimension, geometry and formation mechanism of the pores. Thermal conductivities of three samples produced under different atmospheric plasma spraying conditions with similar total porosity but different volume fractions of each type of pores were measured. Different thermal conductivities were observed. Dependences of thermal conductivity on volume fraction of each type of pores and the geometry of the pores were simulated by a multi-stepped finite element method, which shows that effect of pores on thermal conductivity depends on the shape and dimension of the pores.

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ER -

Structure dependence of thermal conductivity of plasma-sprayed zirconia coatings

Abstract

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ASJC Scopus subject areas

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