Method for restraining secondary electron yield on silver coating surface of microwave component

The invention relates to a method for restraining secondary electron yield on a silver coating surface of a microwave component, particularly relates to the method for restraining the secondary electron yield on the silver coating surface of the microwave component by an electrochemical corrosion method, and belongs to the technical field of micro-discharge. Firstly, anodic oxidation treatment is carried out on the inner surface of the microwave component by using an acid solution; a porous structure is formed at the inner surface of the microwave component; then the caliber of a large hole is increased by using a chemical solution corrosion method; and finally metal with good electrical conductivity such as gold or silver and the like is spluttered and deposited at the inner surface of the microwave component, so that the inner surface of the microwave component has a low secondary electron yield and good conductivity.