Electrochemical analysis device and method for electrochemical migration microcell of electronic product

Abstract

The invention discloses a micro-area electrochemical analysis device and method for electrochemical migration of an electronic product, and is used for analyzing the occurrence trend of a corrosion electrochemical reaction according to micro-area potential distribution on the surface of a circuit board. The device comprises an electrochemical migration generation device, a closed environment simulation container, a pollution gas presetting system, an air circulation system, a waste gas absorption treatment device and a digital display control panel. The pollution gas presetting device, the environment simulation container air circulation system and the waste gas absorption and treatment device are connected with the environment simulation container through pipelines. According to the invention, the influence of pollution gas, environment temperature and humidity and the like on the electrochemical corrosion process of circuit boards, electronic equipment parts and the like in an actual service environment can be effectively simulated, and real-time in-situ micro-area electrochemical analysis is carried out on the corrosion behavior of the circuit boards, the electronic equipment parts and the like.

Description

technical field [0001] The invention relates to the technical field of corrosion and protection of electronic materials, in particular to a micro-area electrochemical analysis device and method for electrochemical migration of electronic materials. Background technique [0002] At present, in order to meet the requirements of miniaturization, multi-function, high density and high flexibility, electronic components are developing towards the direction of small pitch and fine aperture. This has led to electronic components being more sensitive to temperature, humidity and pollutants in the service environment. On the other hand, electronic components are usually biased in the actual service environment. Previous studies have shown that electrochemical migration failure caused by corrosion is considered to be one of the most important failure modes of electronic components. Electrochemical migration occurs when two adjacent and biased electrodes are covered by a layer of elect...

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Problems solved by technology

However, the consistency of liquid volume and weight cannot be guaranteed by manually adding droplets, resulting in poor repeatability of the water drop test and poor controllability of the test conditions; and the current water drop test is only carried out at room temperature and atmospheric environment, which cannot further simulate the actual situation. Changes in environmental factors such as temperature, humidity and other polluting gases in the application cannot realize real-time monitoring of surface corrosion status

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