| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Preparation and Secondary Electron Emission Characteristics of Gold Nano-bowl Structure Based on Polystyrene Template |
| ZHANG Yi1, HAN Zhao1, BAI Yuanrui2, BAO Yan2,*, MA Jianzhong2, YE Nan1
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1 China Academy of Space Technology(Xi’an), Xi’an 710100, China
2 College of Bioresources Chemistry and Material Engineering, Shaanxi University of Science & Technology, Xi’an 710021, China |
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Abstract Reducing the low secondary electron emission coefficient (SEY) of metal microwave components is a common method to improve its multipactor threshold. In this paper, gold nanostructures were prepared on the surface of silver-plated aluminum alloy by electrochemical method using two-dimensional polystyrene (PS) colloidal crystals as a template, TiO2 as transition layer, and the secondary electron emission yield was reduced by using gold nanostructures to absorb and capture secondary electrons. The results showed that the maximum value of the secondary electron emission yield of the gold nanostructures was 1.62, when the concentration of Na2SO3, Na2EDTA, and HAuCl4 was 140 g/L, 5 g/L and 10 g/L, respectively, and the deposition time was 60 min. It was a 26.4% reduction in the SEY maximum compared to the initial silver-plated aluminum alloy sample. This research provides a new surface treatment method for inhibiting multipactor effect.
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Published: 10 April 2023
Online: 2023-04-07
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2023, Vol. 37 
