Surface treatment method of micro radio frequency glass insulator

Abstract

The invention discloses a surface treatment method of a micro radio frequency glass insulator. The method comprises the following steps of: carrying out primary chemical polishing treatment on the surface of the micro radio frequency glass insulator formed by high-temperature sintering, carrying out magnetic grinding, and finally carrying out second chemical polishing; and after the second chemical polishing, conducting cross electroplating treatment on the surface of the micro radio frequency glass insulator, wherein the electroplated coating comprises four layers from inside to outside, namely a first nickel layer, a first gold layer, a second nickel layer and a second gold layer. According to the method, a secondary chemical polishing and magnetic grinding combined method is adopted forcarrying out treatment before electroplating, so that an oxide layer at the root of a lead can be thoroughly removed, the surface state is uniform and consistent, namely, after a subsequent surface is plated with metal, a plating layer is compact, uniform, smooth and consistent in structure, and the stress sensitivity of the plating layer is eliminated; the nickel-gold cross plating technology isadopted, so that the plating layer is compact in structure and free of stress corrosion channel, and stress is effectively eliminated.

Description

technical field [0001] The invention relates to the technical field of radio frequency glass insulators, in particular to a surface treatment method for miniature radio frequency glass insulators. Background technique [0002] With the improvement of electronic integration, the structure size of radio frequency glass insulators tends to be miniaturized. See figure 1 , The micro-RF glass insulator is made of lead 1, glass blank 2 and shell 3 from inside to outside through high-temperature sintering under nitrogen protection. The lead wire diameter is ≤ φ0.5mm, and the shell diameter is about φ1.5-φ3mm. Miniature RF glass insulators are used as insulating supports for the internal and external circuits of RF connecting devices. In order to improve the anti-corrosion ability and weldability of the miniature radio frequency glass insulator, a gold layer is usually plated on the surface of the metal material (the shell 3 and the part of the lead 1 extending out of the shell 3) ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a surface treatment method for a micro-RF glass insulator, which effectively solves the problem of stress corrosion cracking at the root of the lead wire of the micro-RF glass insulator

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