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| Abstract No.: |
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Scheduled at:
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Tuesday, May 04, 2010, Olivia Room 9:00 AM
Plasma Spraying 2
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| Title: |
Effect of powder size distribution on the reproducibility of plasma spray process: a case study of plasma sprayed YSZ coatings
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| Authors: |
Gopal Dwivedi* / Center for Thermal Spray Research, Department of Materials Science and Engineering, Stony Brook University, USA
Jose Colmenares/ Center for Thermal Spray Research, Stony Brook University, USA
Toshio Nakamura/ Center for Thermal Spray Research, Stony Brook University, USA
Sanjay Sampath/ Center for Thermal Spray Research, Stony Brook University,
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| Abstract: |
The reproducibility of plasma spray process has always been a concern in production of repeatable coatings. This multi step process possesses numerous interacting variables which increase the complexity in controlling the process variability and the repeatability of coatings. Some of these steps and variables have more profound effect on the coating properties than others. Hence, in order to minimize any process associated variability, two different batches of four coatings were sprayed on a spinning carousel at a single spray run using two different YSZ HOSP powder cuts. Three different characterization techniques, thermal conductivity, non-linear stress-strain behaviors via low temperature thermal cycling and micro-indentation, will be used to address the effect of powder cuts on the repeatability of coatings, and hence the reproducibility of the process.
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