Direct current (DC) plasma spraying, in atmosphere (APS) or under vacuum condition (VPS), is a standard spraying technology to produce high performance coatings for important applications. Although inductive coupled (IC) plasma torches have been known since the early sixties, its use for industrial coating production remained limited due to the static gun requirement. An adequate substrate manipulation opens up the IC-spraying for its practical use. A VPS system was realized which combines IC- with DC-spraying. The potential of this new facility is highlighted by coatings of W and Yb2O3. The key parameters to achieve an optimized coating structure are explained.

direct current plasma spraying, inductive coupled plasma torches, tungsten coating, vacuum plasma spraying, ytterbium oxide coating
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Copyright © 2005 Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH. All rights reserved.
2005
ASM International
Topics
Thermal spray equipment Oxide-based ceramics Plasma spray coating
Issue Section:
Equipment and Processes
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