| Solid Particle Erosion Behaviour of Plasma-Sprayed
Conventional and Nanostructured Al2O3-13 wt% TiO2
Ceramic Coatings |
Dongsheng Wang*, Zongjun Tian, Songlin Wang#, Lida Shen and Yinhui Huang
pages : 90-96
DOI : 10.1080/0371750X.2015.1036169 |
| Abstract |
| In this study, conventional and nanostructured Al2O3-13 wt% TiO2 coatings were fabricated by plasma spraying.
The microstructural characteristics, bonding strength and solid particle erosion behaviours of the two types of
coatings were compared. Results indicated that the traditional coating has a typical laminated structure. The
nanostructured coating exhibited a bimodal microstructure consisting of fully melted regions and partially melted
regions. The bonding strength and erosion wear resistance of the nanostructured coating were considerably better
than those of the conventional one due to compact microstructure and nanoparticles of partially melted regions.
Erosion failure analysis showed that the conventional coating was dominated by brittle erosion, whereas the
nanostructured coating was dominated by brittle erosion as well as some ductile erosion.
[Keywords: Plasma spraying, Nanostructured coatings, Al2O3-13 wt% TiO2, Solid particle erosion] |
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