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Testing multiwall carbon nanotubes on ion erosion for advanced space propulsion
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|Title: ||Testing multiwall carbon nanotubes on ion erosion for advanced space propulsion|
|Authors: ||Yap, Yoke Khin|
Vanga, Lakshman Kumar
King, Lyon B.
Gogotsi, Yury G.
|Issue Date: ||2004 |
|Publisher: ||Materials Research Society|
|Citation: ||Materials Research Society symposia proceedings v. 821: pp. P3.7.1-P3.7.5|
|Abstract: ||Are carbon nanotubes more resistant than diamonds against ion erosion?
Here, we report an evaluation of multiwall carbon nanotubes (MWNTs) as the protective
coating against plasma erosion in advanced space propulsion systems. We have compared
polycrystalline diamond films with MWNTs, amorphous carbon (a-C) and boron nitride
(BN) films. Two types of MWNTs were investigated including vertically aligned (VA)
MWNTs, and those horizontally laid on the substrate surfaces. Only diamond films and
VA-MWNTs survived erosion by 250 eV krypton ions of a flight-quality Hall-effect
thruster. VA-MWNTs are found to bundle at their tips after ion erosion.|
|Appears in Collections:||Faculty Research and Publications (MSE)|
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