Damage of Coated Turbine Blades after Overheating Events

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F11%3APU96855" target="_blank" >RIV/00216305:26210/11:PU96855 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Damage of Coated Turbine Blades after Overheating Events
Original language description
Turbine blades of aircraft engines are the most loaded parts owing to the high working temperature, induced mechanical stresses as well as an abrasive and corrosive environment. The metallic coatings on blades serve as physical barriers protecting the underlying substrate from these severe degradation effects. One of the most serious degradation modes of coatings is their creep degradation during overheating events. If the critical temperature of gases becomes significantly higher than the nominal one, the surface layer of the blades suffers from initiation of microcracks and cavities in a very short time. Growing of these defects then leads to spalling and progressive destruction of the coating during the further service. This article presents examples of coatings on rotor blades of high-pressure turbines in aircraft engines that were degraded after overheating events during the service. These diffusion aluminide coatings are based on the intermetallic compound beta-NiAl that forms under the influenc
Czech name
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Czech description
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Project
<a href="/en/project/FR-TI1%2F099" target="_blank" >FR-TI1/099: *Research and development leading to innovation of small turbine engines.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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