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Thermal conductivity and sintering behavior of advanced thermal barrier coatings
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Zhu, Dongming Miller, Robert A. |
| Copyright Year | 2002 |
| Description | Advanced thermal barrier coatings, having significantly reduced long-term thermal conductivities, are being developed using an approach that emphasizes real-time monitoring of thermal conductivity under conditions that are engine-like in terms of temperatures and heat fluxes. This is in contrast to the traditional approach where coatings are initially optimized in terms of furnace and burner rig durability with subsequent measurement in the as-processed or furnace-sintered condition. The present work establishes a laser high-heat-flux test as the basis for evaluating advanced plasma-sprayed and physical vapor-deposited thermal barrier coatings under the NASA Ultra Efficient Engine Technology (UEET) Program. The candidate coating materials for this program are novel thermal barrier coatings that are found to have significantly reduced thermal conductivities due to an oxide-defect-cluster design. Critical issues for designing advanced low conductivity coatings with improved coating durability are also discussed. |
| File Size | 626651 |
| Page Count | 13 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20020061255 |
| Archival Resource Key | ark:/13960/t1tf4rh1t |
| Language | English |
| Publisher Date | 2002-05-02 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Vapor Deposition Thermal Control Coatings Furnaces Sintering Thermal Conductivity Burners Heat Flux Real Time Operation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
