how to clean oxidation off of aluminum

Understanding Aluminum Oxidation

Before we tackle the cleaning process, it’s important to understand that aluminum naturally forms an oxide layer when exposed to the air. This helps prevent further corrosion. However, with prolonged exposure to the elements, this layer can build up and appear as a dull, grey film. More severe oxidation can appear as white, chalky spots on the aluminum’s surface.

Basic Cleaning to Remove Light Oxidation

For light oxidation, start with a simple cleaning process using household items:

1. Gather Materials: You will need water, mild dish soap, a sponge or soft-bristled brush, and a towel.
2. Mix Cleaning Solution: Combine warm water with a squirt of dish soap in a bucket.
3. Scrub Gently: Dip the sponge or brush in the soapy water and gently scrub the aluminum surface in the direction of the metal’s grain.
4. Rinse: Use clean water to rinse off the soap. Avoid leaving any soapy residue, which can cause further oxidation.
5. Dry: Wipe the aluminum dry with a soft towel to prevent water spots and additional oxidation.

Removing Moderate Oxidation

If the aluminum exhibits moderate oxidation, you might require a more potent cleaning agent.

1. Prepare a Vinegar Solution: Mix equal parts of white vinegar and water in a spray bottle.
2. Apply and Scrub: Spray the solution onto the aluminum and scrub with a soft brush or sponge.
3. Rinse Thoroughly: Make sure to rinse the surface well with clean water.
4. Dry Completely: Use a clean towel to dry the aluminum surface.

Treating Heavy Oxidation

For heavy oxidation, more aggressive methods will be necessary:

1. Select a Commercial Cleaner: Use a specifically designed aluminum cleaner or a homemade mixture of cream of tartar and water (mix to create a paste).
2. Apply the Cleaner: With protective gloves on, apply the cleaner or paste to the surface.
3. Scrub the Oxidation: Use a brush to scrub the area, working in small sections and rinsing frequently.
4. Rinse Off: After scrubbing the entire surface, rinse off the cleaner completely.
5. Buff and Dry: Dry with a microfiber towel and buff the area to a shine.

Preventing Future Oxidation

Once you’ve cleaned the oxidation off the aluminum, it’s crucial to take steps to prevent or slow down future oxidation:

• Applying a Protective Coating: Use car wax or a silicone-based polish designed for aluminum to create a protective layer.
• Store Properly: If possible, store the aluminum item indoors or under a protective cover to minimize exposure to the elements.
• Regular Cleaning: Wash the aluminum regularly to prevent the buildup of oxidation and pollutants.

Conclusion

Cleaning oxidation off of aluminum can be relatively simple with the right materials and methods. Always start with the least abrasive cleaning method and work your way up if necessary. After cleaning, be sure to protect the aluminum to maintain its appearance and prolong its lifespan.

Remember, when dealing with severe corrosion or valuable items, it might be best to consult a professional to avoid damaging the material.