Loading...
Please wait, while we are loading the content...
Emittance and absorptance of nasa ceramic thermal barrier coating system. [for turbine cooling
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Liebert, C. H. |
| Copyright Year | 1978 |
| Description | Spectral emittance measurements were made on a two-layer ceramic thermal barrier coating system consisting of a metal substrate, a NiCrAly bond coating and a yttria-stabilized zirconia ceramic coating. Spectral emittance data were obtained for the coating system at temperatures of 300 to 1590 K, ceramic thickness of zero to 0.076 centimeter, and wavelengths of 0.4 to 14.6 micrometers. The data were transformed into total hemispherical emittance values and correlated with respect to ceramic coating thickness and temperature using multiple regression curve fitting techniques. The results show that the ceramic thermal barrier coating system is highly reflective and significantly reduces radiation heat loads on cooled gas turbine engine components. Calculation of the radiant heat transfer within the nonisothermal, translucent ceramic coating material shows that the gas-side ceramic coating surface temperature can be used in heat transfer analysis of radiation heat loads on the coating system. |
| File Size | 1507555 |
| Page Count | 32 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780018205 |
| Archival Resource Key | ark:/13960/t19k94p2q |
| Language | English |
| Publisher Date | 1978-06-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Gas Turbines Thermal Control Coatings Thermal Protection Ceramic Coatings Nickel Coatings Metal Compounds Zirconium Oxides Yttria-stabilized Zirconia Spectral Emission Absorption Spectra Aluminum Coatings Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
