Abstract
Recently, a technique for improving the thermal efficiency of automotive engines has received considerable attention, namely the application of thermal insulation coatings to automotive engine components to reduce heat loss. This study presents thermal shock resistance and related microstructural changes and thermal properties of 8 wt% yttria-stabilized zirconia (8YSZ)/SiO2 multi-compositional thermal insulation coatings with suspensions of various particle sizes, when subjected to suspension plasma spray. After 10,000 cycles of thermal shock testing of the coatings, it was found that different degradation behavior related to the different microstructure of the coatings was influenced by the particle sizes of the suspension. The thermal conductivity of the coatings was significantly reduced by increasing the distribution of the unmelted particles within the coating.
| Original language | English |
|---|---|
| Pages (from-to) | 3671-3679 |
| Number of pages | 9 |
| Journal | Ceramics International |
| Volume | 47 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2021 Feb 1 |
Bibliographical note
Publisher Copyright:© 2020
Keywords
- Automotive engine
- Suspension plasma spray
- Thermal insulation coating
- Thermal shock resistance
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Process Chemistry and Technology
- Surfaces, Coatings and Films
- Materials Chemistry