Study on instant droplet and particle stages during suspension plasma spraying (SPS)

Suspension plasma spraying (SPS) is a new process in the field of the atmospheric plasma spraying (APS). The SPS process uses a heterogeneous mixture of liquids and particles. Thus it is possible to process particles with a size between ten to a few hundred nanometres. This leads to completely new o...

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Bibliographic Details
Published in:Surface & coatings technology 2008-06, Vol.202 (18), p.4355-4361
Main Authors: KASSNER, H, VASSEN, R, STÖVER, D
Format: Article
Language:English
Subjects:
Applied sciences
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Metals. Metallurgy
Microstructure
Nano-particles
Particle characteristics
Physics
Production techniques
Surface treatment
Surface treatments
Suspension plasma spraying
YSZ
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Summary:Suspension plasma spraying (SPS) is a new process in the field of the atmospheric plasma spraying (APS). The SPS process uses a heterogeneous mixture of liquids and particles. Thus it is possible to process particles with a size between ten to a few hundred nanometres. This leads to completely new or at least improved material features and structures. Notwithstanding the process and the involved mechanisms that lead from a suspension droplet to a molten ceramic droplet and its influence on the generated coating are not yet completely understood. Because of the liquid in the suspension and much smaller particles the process in the plasma is much more complex compared to the APS process. Based on empiric studies including in-flight monitoring of the particles as well as splat and coating analyses a new schematic of the single stages during suspension plasma spraying and their influence on the coating structure will be introduced.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2008.04.009