High-speed thermal imaging of yttria-stabilized zirconia droplet impinging on substrate in plasma spraying

Journal Article · Mon May 07 00:00:00 EDT 2007 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2737360· OSTI ID:20971923

Shinoda, Kentaro; Murakami, Hideyuki; Kuroda, Seiji; Oki, Sachio; Takehara, Kohsei; Etoh, Takeharu Goji ^[1]

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1. Composites and Coatings Center, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan)

The authors have developed an in situ monitoring system that captures the impacting phenomena of plasma-sprayed particles at 1x10{sup 6} frames/s. The system clearly captured deformation and cooling processes of an yttria-stabilized zirconia droplet of 50 {mu}m in diameter impinging at 170 m/s on a smooth quartz glass substrate kept at room temperature. The images show that the liquid sheet jetting out sideways from the droplet detached from the substrate and kept on spreading without disintegration until its maximum extent. While the sheet was spreading, the center region of the flattened droplet cooled down much more rapidly.

• OSTI ID: 20971923
• Journal Information: Applied Physics Letters, Vol. 90, Issue 19; Other Information: DOI: 10.1063/1.2737360; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COOLING
DEFORMATION
DROPLETS
PLASMA
PLASMA ARC SPRAYING
QUARTZ
SOLIDIFICATION
SUBSTRATES
TEMPERATURE RANGE 0273-0400 K
YTTRIUM OXIDES
ZIRCONIUM OXIDES