Why is it important to coat the brushed aluminum conductor with an inhibitor-type compound?

Coating the brushed aluminum conductor with an inhibitor-type compound is crucial primarily for the purpose of preventing corrosion. Aluminum is susceptible to oxidation, which can lead to the formation of aluminum oxide on its surface. While aluminum oxide is a natural protective layer, it can still allow for corrosion under certain conditions, especially in the presence of moisture and contaminants.

An inhibitor-type compound acts as a protective barrier that not only reduces the formation of this oxide layer but also provides additional protection against other forms of corrosion. This is particularly important in electrical applications where a clear conductive path must be maintained. Corrosion can hinder the performance of the conductor, leading to increased resistance and potential failure of the electrical system. Thus, applying an inhibitor ensures that the integrity and conductivity of the aluminum conductor are preserved over time.