High temperature damping behavior of plasma sprayed NiCoCrAlY coatings |
| |
Authors: | K A Khor C T Chia Y W Gu F Y C Boey |
| |
Affiliation: | (1) School of Mechanical Production Engineering, Nanyang Technological University, Nanyang Avenue, 639798 Singapore;(2) School of Materials Engineering, Nanyang Technological University, Nanyang Avenue, 639798 Singapore |
| |
Abstract: | There is a trend to design the turbine coating and the substrate as in integral, layered, engineering assembly. Under the
harsh environment of the turbine engine, a failure in one component can quickly lead to failure in other components. Materials
that are used in structural applications are prone to mechanical vibration, which, when not attenuated, will lead to fatigue
of components and shortening of life cycle. Therefore, it is necessary to examine the thermal stability and dynamic mechanical
properties of coatings under dynamic conditions. In addition to these noise reduction and vibration amplitude control motivated
objectives, however, mechanical energy dissipation processes also find intrinsic applications in cases for which a thorough
understanding of the mechanisms responsible for the damping response of the material is required. This article describes the
damping behavior and mechanisms that exist in plasma sprayed NiCoCrAlY coatings. |
| |
Keywords: | creep damping behavior dislocations NiCoCrAlY plasma spray thermal barrier coatings |
本文献已被 SpringerLink 等数据库收录! |
|