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Design of inorganic water repellent coatings for thermal protection insulation on an aerospace vehicle
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Fuerstenau, D. W. Ravikumar, R. |
| Copyright Year | 1997 |
| Description | In this report, thin film deposition of one of the model candidate materials for use as water repellent coating on the thermal protection systems (TPS) of an aerospace vehicle was investigated. The material tested was boron nitride (BN), the water-repellent properties of which was detailed in our other investigation. Two different methods, chemical vapor deposition (CVD) and pulsed laser deposition (PLD), were used to prepare the BN films on a fused quartz substrate (one of the components of thermal protection systems on aerospace vehicles). The deposited films were characterized by a variety of techniques including X-ray diffraction, X-ray photoelectron spectroscopy, and scanning electron microscopy. The BN films were observed to be amorphous in nature, and a CVD-deposited film yielded a contact angle of 60 degrees with water, similar to the pellet BN samples investigated previously. This demonstrates that it is possible to use the bulk sample wetting properties as a guideline to determine the candidate waterproofing material for the TPS. |
| File Size | 833482 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19980211448 |
| Archival Resource Key | ark:/13960/t1jh8gw0p |
| Language | English |
| Publisher Date | 1997-11-01 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Water Scanning Electron Microscopy Wetting X Ray Spectroscopy Boron Nitrides Pulsed Laser Deposition Inorganic Coatings X Ray Diffraction Photoelectron Spectroscopy Substrates Thin Films Vapor Deposition Thermal Protection Aerospace Vehicles Waterproofing 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 |
