Microstructure of Suspension Plasma Spray and Air Plasma Spray Al2O3-ZrO2 Composite Coatings |
| |
| Authors: | Dianying Chen Eric H Jordan Maurice Gell |
| |
| Affiliation: | (1) Department of Chemical, Materials and Biomolecular Engineering, Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA;(2) Present address: Sulzer Metco (US) Inc., Westbury, NY 11590, USA;(3) Department of Mechanical Engineering, University of Connecticut, Storrs, CT 06269, USA |
| |
| Abstract: | Al2O3-ZrO2 coatings were deposited by the suspension plasma spray (SPS) molecularly mixed amorphous powder and the conventional air
plasma spray (APS) Al2O3-ZrO2 crystalline powder. The amorphous powder was produced by heat treatment of molecularly mixed chemical solution precursors
below their crystallization temperatures. Phase composition and microstructure of the as-synthesized and heat-treated SPS
and APS coatings were characterized by XRD and SEM. XRD analysis shows that the as-sprayed SPS coating is composed of α-Al2O3 and tetragonal ZrO2 phases, while the as-sprayed APS coating consists of tetragonal ZrO2, α-Al2O3, and γ-Al2O3 phases. Microstructure characterization revealed that the Al2O3 and ZrO2 phase distribution in SPS coatings is much more homogeneous than that of APS coatings. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
