Structure dependence of thermal conductivity of plasma-sprayed zirconia coatings

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

Research output: Chapter in Book/Report/Conference proceedingConference 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 languageEnglish
Title of host publicationProceedings of the 30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18
Pages393-402
Number of pages10
Publication statusPublished - 2010 Dec 1
Event30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18 - Pittsburgh, PA, United States
Duration: 2009 Aug 292009 Sep 2

Publication series

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

Other

Other30th International Thermal Conductivity Conference and the 18th International Thermal Expansion Symposium, Thermal Conductivity 30/Thermal Expansion 18
CountryUnited States
CityPittsburgh, PA
Period09/8/2909/9/2

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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).