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What is the goal of a corrosion test?
The aim of a corrosion test is to determine the susceptibility/resistance of products to corrosion. Corrosion is the process by which a material is destroyed due to chemical reactions in its environment. There are various reasons for carrying out a corrosion test:
On the one hand, they are used for quality control. To ensure that products meet the required quality standards and are not susceptible to corrosion. Corrosion tests can reveal weak points and examine the durability of materials.
On the other hand, they are also used for research purposes. When developing new materials or alloys, it is important to understand how they behave under different environmental conditions.
Furthermore, the tests are also used to evaluate service life and help with the selection of materials for a product.
What happens during a corrosion test?
In a corrosion test, the specimen is placed in a specific chamber in which it is exposed to constantly high humidity and changing temperatures. This simulates the conditions to which the material could be exposed in certain environments. In a salt spray test, a sodium chloride solution is sprayed into a chamber at a defined temperature.
The generated environment deliberately provokes the formation of corrosion. This exposure tests the resistance of the test specimen to influences.
After a defined test duration, the effects and damages on the specimen are analyzed in order to draw conclusions about the corrosion resistance and durability of the material. This enables a well-founded assessment of the material quality and supports the development of corrosion-resistant products.
In which areas are corrosion tests used?
Corrosion testing is useful in all areas where products are exposed to the effects of corrosion, e.g. through contact with salt. For example:
- Shipping: navigation electronics, sensors
- Automotives: : brake lines, exhaust systems
- Aviation: aluminum alloys, engine components
- Eletronics: printed circuit boards, antennas and connecting elements, housings
- Energy sector: wind turbines, solar modules
Standards: DIN EN 60068-2-11, DIN EN 60068-2-52, DIN EN ISO 9227, DNV GL, MIL-STD-810, RTCA-DO160
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