| 摘要 |
A process is described for forming integral coatings on metal and/or non-metallic substrate surfaces by the method of physical and chemical deposition in a vacuum of metal and/or non-metallic materials. The process, improved so as to obtain a coating with quasi-plasticity behavior, includes an action for depositing material onto substrate surfaces in the shape of multiple separated-in-space deposition zones of predetermined form and dimensions, and, also, an action for continuous migration of these deposition zones over the substrate surface during the whole of the coating formation process, while preserving a uniform coating thickness. In a particular embodiment, a protective high-temperature resistant NiCrAlY system coating is formed on a protected component by physical vapor deposition, which deposition is done through a screen having a series of narrow and long slots. The screen functions as a means for creating multiple separated-in-space deposition zones, and encloses the protected component along its contours with a 3-5 mm clearance. The screen rotates together with the protected component relative to the deposited material flow, so as to permit the continuous migration of the deposition zones over the protected component surface.
|
