Gas corrosion test for electronic products what are the corrosive gases?

Date：2022-08-12 18:09:53Views：863

The corrosion gas test is used to determine the corrosion effect of the indoor environment of work or storage on the components, equipment and materials of electrical and electronic products, especially the contact and connecting parts. It is mainly used to determine the adaptability of products to work and storage in the atmospheric environment, especially the contact parts and connections. The main factors affecting corrosion are temperature, humidity, atmospheric corrosive composition, etc. The severity of the experiment depends on the type of corrosive gas and the duration of exposure. This paper collects and collates some data, and hopes to have great reference value for readers.

Introduction to gas corrosion:

Gas corrosion test is a very rigorous test item in the reliability test of climate environment. Most products are used in the atmosphere, and most corrosion occurs in the atmosphere, which contains oxygen, humidity, temperature change, pollutants and other corrosion components and corrosion factors. The atmospheric environment causes the formation of water film on the metal surface. In the atmosphere, harmful gases such as H2S, SO2, NO2 and Cl2 dissolve into the water film formed on the metal surface as corrosive ions to accelerate the corrosion process. The mixed gas of sulfur dioxide, hydrogen sulfide, nitrogen dioxide and chlorine is used in the gas corrosion equipment box to accelerate the corrosion of materials or products under a certain temperature and relative humidity.

Purpose of gas corrosion test:

Under a certain temperature and humidity environment, use harmful gases such as H2S, SO2, NO2, Cl2 to accelerate the corrosion of materials or products, and reproduce the damage degree of materials or products within a certain time range. It can also be used to assess the gas corrosion resistance of some products by assessing the gas corrosion resistance of materials and protective layers and comparing the process quality of similar protective layers.

Test application scope:

Protective layer of communication products and peripheral parts, automotive electronics, electronic components, connectors, metal materials, electronic and electrical products and electronic and electrical products.

Test application standard:

1、ISO 21207:2004(E)

2. GB / t2423.51-2000 (IEC 68-2-60:1995) environmental testing of electrical and electronic products Part 2: Test methods Test Ke: Flowing mixed gas corrosion test;

3. GB / T 2423.33-2005 environmental testing of electrical and electronic products Part 2: Test methods Test KCa: high concentration sulfur dioxide test;

4. GB / T 2423.19-1981 basic environmental test procedures for electrical and electronic products Test Kc: sulfur dioxide test method for contact points and connectors.

The above is the relevant content of the gas corrosion test of electronic products compiled by Chuangxin testing group. I hope it can be helpful to you. Our company has professional engineers and industry elite teams, and has three standardized laboratories with an area of more than 1800 square meters. It can undertake various test projects such as electronic component testing and verification, IC authenticity identification, product design and material selection, failure analysis, functional testing, factory incoming material inspection and tape weaving.