Abstract:To study resistivity test of high resistivity thin film materials for spacecraft, based on the simulation analysis of the existing design method of ring electrode for high-resistance resistivity test, combined with the mathematical model derivation, a methed of design value for a ring electrode effective test width and size was proposed, and a ring electrode device for spacecraft thin film material measurement was desighed. Through the experiment, the surface resistivity and volume resistivity of the film material for spacecraft were measured, and the margin of indication error was controlled within 9%.It can be applied to the resistivity test of composite material for spacecraft with a volume resistivity of 105~1018Ω·cm.
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