Femtosecond laser fabrication of porous ceramics for electrospray thruster emitter

Yu Chen; Ben Niu

doi:10.1117/12.2602412

24 June 2021 Femtosecond laser fabrication of porous ceramics for electrospray thruster emitter

Yu Chen, Ben Niu

Proceedings Volume 11885, International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2021); 118850E (2021) https://doi.org/10.1117/12.2602412
Event: 2021 International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2021), 2021, Xi'an, China

Abstract

In recent years, artificial satellites have developed towards miniaturization and micro-nano. The propulsion system is indispensable for micro-nano satellites. The key component of the electrospray thruster is the emitter made of porous material, which generates micro thrust by emitting ionic liquid. The hardness and brittleness of porous ceramics are relatively large. Traditional machining methods and long-pulse laser fabricating have disadvantages such as low machining accuracy, poor surface quality, severe tool wear, and large heat-affected zones. This paper studied the femtosecond laser fabrication of porous borosilicate ceramics to obtain strip-shaped and cone-shaped convex structure which could be used for electrospray thruster emitter. The rough machining and finish machining of porous ceramics were studied and the laser fabricating parameters were optimized. Combining the advantages of rough machining and finish machining, the "twostep machining" was used to fabricate porous ceramics, which improved the machining efficiency while ensuring the machining accuracy and machining quality.

Citation Download Citation

Yu Chen and Ben Niu "Femtosecond laser fabrication of porous ceramics for electrospray thruster emitter", Proc. SPIE 11885, International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2021), 118850E (24 June 2021); https://doi.org/10.1117/12.2602412

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available