Method for detecting initial corrosion state of high-voltage anode aluminum foil

Abstract

The invention discloses a method for detecting an initial corrosion state of a high-voltage anode aluminum foil. The method for detecting an initial corrosion state of a high-voltage anode aluminum foil comprises the following steps: (1), carrying out chemical corrosion; to be specific, chemically corroding a high-voltage anode aluminum foil sample; (2), carrying out electrochemical corrosion; tobe specific, carrying out electrochemical corrosion on the chemically corroded high-voltage anode aluminum foil; and (3), carrying out detection; to be specific, carrying out surface brightness detection on the high-voltage anode aluminum foil subjected to electrochemical corrosion. According to the detection method, the initial corrosion is carried out on the anode aluminum foil for the high-voltage electrolytic capacitor to judge the surface quality of a high-voltage electronic aluminum foil product to obtain the standard for detecting and judging the delivery surface quality of the high-voltage electronic aluminum foil. The method has advantages of short time consumption, low cost, visual result and is suitable for quality detection during factory batch production.

Description

technical field [0001] The invention belongs to the technical field of high-voltage anode aluminum foil, and in particular relates to a detection method for the initial corrosion state of high-voltage anode aluminum foil. Background technique [0002] High specific capacity and miniaturization are the inevitable trend of the development of aluminum electrolytic capacitors, and the quality of anode aluminum foil for aluminum electrolytic capacitors seriously restricts the development of capacitors to achieve high specific capacity and miniaturization, but the initial corrosion and porosity of high-voltage anode aluminum foil is a sign of high-voltage anode One of the important indicators of aluminum foil quality. Because the high-voltage anode aluminum foil needs to go through 10-15 processes in the production process, the refined aluminum ingot with a thickness of 450-550mm is finally produced through multiple production processes such as milling, calendering, cleaning liqui...

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Problems solved by technology

[0003] However, this method takes a long time, is costly, and has a small observation area. It can only represent a small part of the quality of aluminum foil. It is suitable for laboratory analysis and cannot perform quality inspections on mass-produced products in factories.

Therefore, there is currently no effective method to detect and judge the initial corrosion and porosity of the anode aluminum foil, which will hinder the quality improvement of the anode aluminum foil and the development of process technology.

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