Grain-size-dependent thermal conductivity of nanocrystalline yttria-stabilized zirconia films grown by metal-organic chemical vapor deposition
- 21 August 2000
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 77 (8) , 1155-1157
- https://doi.org/10.1063/1.1289803
Abstract
A grain-size-dependent reduction in the room-temperature thermal conductivity of nanocrystalline yttria-stabilized zirconia is reported for the first time. Films were grown by metal-organic chemical vapor deposition with controlled grain sizes from 10 to 100 nm. For grain sizes smaller than approximately 30 nm, a substantial reduction in thermal conductivity was observed, reaching a value of less than one-third the bulk value at the smallest grain sizes measured. The observed behavior is consistent with expectations based on an estimation of the phonon mean-free path in zirconia.Keywords
This publication has 16 references indexed in Scilit:
- Ductility of nanocrystalline zirconia based ceramics at low temperaturesNanostructured Materials, 1999
- Structure and Mechanical Behavior of Bulk Nanocrystalline MaterialsMRS Bulletin, 1999
- The effect of grain size, porosity and yttria content on the thermal conductivity of nanocrystalline zirconiaScripta Materialia, 1998
- Thermal conductivity of thermal barrier coatingsMaterials Science and Engineering: A, 1998
- Thermal barrier coatings issues in advanced land-based gas turbinesJournal of Thermal Spray Technology, 1997
- Heat transport in thin dielectric filmsJournal of Applied Physics, 1997
- Current and future materials in advanced gas turbine enginesJournal of Thermal Spray Technology, 1996
- Lower limit to the thermal conductivity of disordered crystalsPhysical Review B, 1992
- The effect of the exposure to different irradiation sources on the thermal conductivity of A12O3Journal of Nuclear Materials, 1990
- Thermal conductivity measurement from 30 to 750 K: the 3ω methodReview of Scientific Instruments, 1990