| 专利名称： | CERAMIC HEAT INSULATING LAYER |
| 公开（告）号： | |
| 公开（公告）日： | 2007-01-18 00:00:00 |
| 申请（专利）号： | WO2006EP63826(WO2007006681) |
| 申请日： | 2006-07-04 00:00:00 |
| 发明（设计）人： | ALSTOM TECHNOLOGY LTD (CH) |
| (申请)专利权（人）： | NAZMY MOHAMED YOUSSEF (CH) |
| 内容： | The invention relates to a ceramic heat insulating layer (8) for coating the surface (7) of a component (1), preferably a gas turbine component, which is composed of a nickel-base superalloy and a metallic adhesive layer (6) that is optionally applied thereto. The heat insulating layer (8) contains zirconium oxide (ZrO2) stabilized by means of yttria (Y2O3), production-related impurities, and at least one high temperature-resistant and oxidation-resistant intermetallic compound, e.g. NiAl, YRh, Erlr, whose volume fraction decreases continuously or gradually as the distance from the surface (7) of the component (1)/the adhesive layer (6) increases. The advantage of the invention lies in the fact that a less steep tensile gradient is obtained due to the gradual change of the composition of the heat insulating layer (8), resulting in greater elasticity tolerance of the heat insulating layer (8) and thus an increased service life under thermal stress (no flaking) while making it possible to apply thicker heat insulating layers (8) and therefore use the coated components (1) at higher temperatures. |
发布日期：2007-08-21 15:42:00