Abstract
Nanostructured lanthana-doped yttria-stabilized zirconia thermal barrier coatings were developed using the air plasma spraying technique. Scanning and transmission electron microscopy studies revealed that the coatings are characterized by a bimodal microstructure consisting of melted zones, nano-zones, splats, nano-pores and micro-cracks, which are typical features of nanostructured plasma-sprayed coatings. These coatings are tetragonal in phase, with a grain size of 30-60 nm. The thermal conductivity achieved by these coatings is lower than that of nanostructured and traditional yttria-stabilized zirconia coatings.
| Original language | English |
|---|---|
| Pages (from-to) | 109-112 |
| Number of pages | 4 |
| Journal | Scripta Materialia |
| Volume | 66 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 2012 |
Keywords
- LaO
- Nanostructure
- Plasma sprayed
- Thermal conductivity
- YSZ
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