| Download | - View accepted manuscript: Photographing impact of molten molybdenum particles in a plasma spray (PDF, 744 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1361/105996305X59422 |
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| Author | Search for: Mehdizadeh, N. Z.1; Search for: Lamontagne, M.1; Search for: Moreau, C.; Search for: Chandra, S.; Search for: Mostaghimi, J. |
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| Affiliation | - National Research Council of Canada. NRC Industrial Materials Institute
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| Format | Text, Article |
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| Subject | droplet; particle impact; plasma spray; splashing; splat |
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| Abstract | Plasma-sprayed molten molybdenum particles (40 μm in diameter) were photographed impinging at high velocity (140 m/s) on a glass substrate at room temperature. An optical sensor detected thermal radiation emitted by a droplet as it approached the substrate and activated a time delay unit. After a selected time interval, an Nd:YAG laser was triggered, emitting a 5 ns pulse that provided illumination for a chargecoupled device (CCD) camera to photograph the impacting droplet through a long-range microscope. By varying the delay before pulsing the laser, different stages of droplet deformation were recorded. Impacting droplets spread into a thin circular film that ruptured and broke into small fragments. An optical detector recording thermal radiation from the impacting droplet gave a signal that increased as the droplet spread out, reached a maximum when the liquid film began to rupture, and decreased as portions of the droplet recoiled because of surface tension and then flew out of view of the photodetector. |
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| Publication date | 2005-09-01 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 47939 |
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| NPARC number | 15955051 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 92b075be-0e2c-4a6c-bfce-8f3353a4ac48 |
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| Record created | 2010-08-17 |
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| Record modified | 2020-04-07 |
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