Spray nozzle and method for atmospheric spraying, device for coating, and coated component
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SIEMENS AG
- Publication Date
- 2012-10-10
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention relates to an atmospheric plasma spraying, a device for coating and a component. Background technique
[0002] Atmospheric plasma spraying is a cost-effective alternative to plasma spraying, since a vacuum can be dispensed with here. However, this is not possible with powders. With other coating methods, defined properties of the metal layer are often not achieved.
[0003] In order to increase the efficiency of the turbine, the turbine inlet temperature of the gas must be increased. In order to protect the turbine blades from damage at high temperatures of more than 800° C., a metal coating is applied as an oxidation protection and adhesion-promoting layer (HVS), and a ceramic coating is applied on top of this metal coating for thermal insulation. In order to hold the ceramic coating on the adhesion-promoting layer, a particularly rough surface is required. Currently, HVS is mostly applied in the vacuum method of spraying technology,...