Loading...
Please wait, while we are loading the content...
Similar Documents
Sputtering erosion measurement on boron nitride as a hall thruster material
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Britton, Melissa Waters, Deborah Sechkar, Edward Banks, Bruce Messer, Russell |
| Copyright Year | 2002 |
| Description | The durability of a high-powered Hall thruster may be limited by the sputter erosion resistance of its components. During normal operation, a small fraction of the accelerated ions will impact the interior of the main discharge channel, causing its gradual erosion. A laboratory experiment was conducted to simulate the sputter erosion of a Hall thruster. Tests of sputter etch rate were carried out using 300 to 1000 eV Xenon ions impinging on boron nitride substrates with angles of attack ranging from 30 to 75 degrees from horizontal. The erosion rates varied from 3.41 to 14.37 Angstroms/[sec(mA/sq cm)] and were found to depend on the ion energy and angle of attack, which is consistent with the behavior of other materials. |
| File Size | 847472 |
| Page Count | 11 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20020082939 |
| Archival Resource Key | ark:/13960/t3qv8gj17 |
| Language | English |
| Publisher Date | 2002-09-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Propulsion And Power Corrosion Resistance Hall Thrusters Impingement Boron Nitrides Xenon Angle of Attack Sputtering Erosion 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 |
