High Power Laser and Particle Beams, Volume. 36, Issue 8, 089002(2024)
Development and application of carbon based material grids for ion thruster: status quo and suggestions
Figures & Tables(18)
Fig. 1. Sputtering yield of C/C and PG materials with different xenon ion energies
Fig. 12. Different configurations of C/C composite grid assemblies
Fig. 13. Beam state of convex grid under 20 mN operating condition
Fig. 14. Beam current parameters of equi-configuration C/C composite material grid and molybdenum grid
Table 1. Grid operating characteristics and failure factors
View tableView in ArticleTable 1. Grid operating characteristics and failure factors
work characteristic failure factors failure form feather ion sputtering broken reinforcement and pit in the bridge shortened lifespan and decreased beam performance high temperature plasma bombardment grid thermal deformation grid ignition short circuit vibration shock grid local rupture induced beam failure
Table 2. Main physical characteristic parameters of grid material
View tableView in ArticleTable 2. Main physical characteristic parameters of grid material
grid material elastic modulus/GPa strength/MPa ion sputtering rate/eV thermal expansion coefficient/(10−6 K−1) safe electric field/(kV/cm) molybdenum 324 655 50 4.9 40～50 PG 32 90 16 0 20～30 C/C 206 345 14 −1.8～−0.51 23～35
Table 3. Analysis of different composite grid hole forming techniques
View tableView in ArticleTable 3. Analysis of different composite grid hole forming techniques
hole making method advantages disadvantages machining high efficiency and low cost poor quality and high tool loss EDM high precision and smooth hole wall shrinkage effect and high cost ultrasonic machining high precision and smooth hole wall shrinkage effect and high cost waterjet etching low processing cost poor quality and significant damage laser processing high quality and low damage high cost
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Bin Gao, Juan Li, Hai Geng, Yanlong Wang, Juanjuan Chen. Development and application of carbon based material grids for ion thruster: status quo and suggestions[J]. High Power Laser and Particle Beams, 2024, 36(8): 089002
Paper Information
Category: Advanced Interdisciplinary Science·Overview
Received: Feb. 29, 2024
Accepted: Jun. 13, 2024
Published Online: Aug. 8, 2024
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