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Fused slurry silicide coatings for columbium alloys reentry heat shields. volume 1: evaluation analysis
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Fitzgerald, B. |
| Copyright Year | 1973 |
| Description | The R-512E (Si-20Cr-20Fe) fused slurry silicide coating process was optimized to coat full size (20in x 20in) single face rib and corrugation stiffened panels fabricated from FS-85 columbium alloy for 100 mission space shuttle heat shield applications. Structural life under simulated space shuttle lift-off stresses and reentry conditions demonstrated reuse capability well beyond 100 flights for R-512E coated FS-85 columbium heat shield panels. Demonstrated coating damage tolerance showed no immediate structural failure on exposure. The FS-85 columbium alloy was selected from five candidate alloys (Cb-752, C-129Y, WC-3015, B-66 and FS-85) based on the evaluation tests which have designed to determine: (1) change in material properties due to coating and reuse; (2) alloy tolerance to coating damage; (3) coating emittance characteristics under reuse conditions; and (4) new coating chemistries for improved coating life. |
| File Size | 64148081 |
| Page Count | 153 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730024093 |
| Archival Resource Key | ark:/13960/t1fj77b33 |
| Language | English |
| Publisher Date | 1973-08-01 |
| Access Restriction | Open |
| Subject Keyword | Thermodynamics And Combustion Oxidation Resistance Silicides Space Shuttles Liftoff Launching Heat Shielding Niobium Alloys Atmospheric Entry Protective Coatings Slurries Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
