Which material should be used to treat aluminum surfaces during cleaning and corrosion removal for avionic test equipment?

The most suitable material for treating aluminum surfaces during cleaning and corrosion removal, particularly for avionic test equipment, is a chemical conversion material. These materials are specifically designed to improve the corrosion resistance of aluminum by converting the aluminum surface into a protective layer. This chemical process typically involves a treatment that forms a stable oxide coating, which not only provides a barrier against further corrosion but also enhances the adhesion of subsequent coatings, such as primers and paints.

Additionally, chemical conversion materials can help to stabilize the aluminum surface after corrosion has been removed, making it vital in avionics where reliability and durability are critical. They ensure that the integrity of the equipment is maintained over time, especially in the challenging environments that aviation components often face.

Using oil-based cleaners or general-purpose solvents, while effective for basic cleaning, does not provide the same level of protection or surface enhancement as chemical conversion materials. Paint primers are useful for finishing processes after cleaning and corrosion treatment but do not actively treat the surface to prevent corrosion on their own. Therefore, chemical conversion materials are the optimal choice for ensuring the longevity and performance of aluminum components in avionics.