Method for processing surface of Cu electrode of multistage depressed collector through graphene
A technology of electrode surface and multi-layer graphene, which is applied in the manufacture of electrode systems, manufacture of discharge tubes/lamps, collectors of time-of-flight electron tubes, etc., can solve the problems of many reagents, complicated processing, and limited effects. Achieve the effect of large-area uniform growth graphene coating process
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[0031] The invention adopts a vapor deposition method to grow a graphene material coating on the surface of the Cu electrode of the multi-stage depressurized collector, and carries out material modification on the surface of the collector, thereby effectively reducing the secondary electron emission coefficient of the multi-stage depressurized collector electrode.
[0032] Technical process of the present invention:
[0033] 1. Pre-treatment of the electrode: soaking in 10% acetic acid aqueous solution for 30 minutes; acetone ultrasonication for 5 minutes; ethanol ultrasonication for 5 minutes; pure water ultrasonication for 5 minutes; drying the electrode;
[0034] 2. Put the electrode into the sputtering coater and coat with a layer of metal Ni of about 20-50nm;
[0035] 3. Coat the coated electrode with nickel skin on the outside and place it in the quartz tube of the graphene production equipment;
[0036] Purge the quartz tube 3 times with nitrogen;
[00...
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