| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Advances in Surface Engineering
|
| Presentation Title |
Erosion Resistant and Passively Emitting Composite Coatings for Space Charge Mitigation Applications |
| Author(s) |
Rajeswaran Radhakrishnan, Danny Liu, Timothy Hall, Maria Inman, Earl Jennings Taylor, Stephen Snyder, Matthew Robertson, Trace Taylor, JR Dennison |
| On-Site Speaker (Planned) |
Rajeswaran Radhakrishnan |
| Abstract Scope |
National Space Weather Strategy and Action plan calls for the need to enhance Protection of National Security, Homeland Security, and Commercial Assets and Operations against Effects of Space Weather. Ionizing radiation occurring as a result of space weather events can create negative surface charges, leading to ion sputtering, arcing, and/or parasitic current that damages spacecraft components, reducing their functionality and lifetimes. Therefore, developing a scalable manufacturing process to apply a lightweight passively emitting/erosion resistant coating that can mitigate charging and erosion effects from ionizing radiation is of interest. In this presentation, we will discuss the feasibility of a scalable manufacturing process for depositing a durable, highly emissive composite coating on spacecraft viable substrates. The composite coating shows a 140% increase in maximum total electron yield over Al, extending by 4x the range of electron yields between crossover energies >1, and maintained nominal emission properties in modeled ISS plasma erosion. |