How to keep the Magnesium from oxidizing
Copper/ Mag cells..
In the cell the negative electrode always oxidizes. Which led me to believe the solution that John B wont release actually does this. I found a car forum speaking about cleaning and preventing, its word for word and this that may help solve this issue. NOT TESTED!!
""""Magnesium and magnesium alloys are extremely chemically active. I’ll keep this as short as I can for this forum. Commercial solutions are available but I’m 8 miles from my hangar at the moment and don’t have the names readily available. The following is from my notes and can be found in the FAA AC 43.13 of September 1998.
If you have a lightly corroded surface you can make up a chemical solution using 24 ounces of Chromium Trioxide and enough distilled water to make one gallon of solution. It will take from 1 to 15 minutes to react. I use a stainless steel pot to mix the solution. Use an acid brush or acid-resistant brush and apply the solution to the corroded area being careful to not allow this solution into cracks or from touching nearby areas you don’t want touched. Masking tape can be used to protect those areas. Allow the solution to remain on the surface for approx 15 minutes using the brush to agitate the solution. Flush clean the area with distilled water and then repeat the above until all the corrosion is removed and you have a bright metallic color.
To treat the clean magnesium to prevent further corrosion you can make up a solution that will convert the magnesium skin as follows using a stainless steel, vinyl, polyethylene, or rubber container: Take 1 gallon of distilled water. Add 1.3 ounces of Chromic ACID (CrO3). Then add 1 ounce of 99.5 pure Calcium Sulfate (CaSo4.2H2O). Mix vigorously for 15 minutes to ensure the solution is saturated with Calcium Sulfate. Wait 15 minutes and transfer the solution to glass polyethylene bottles taking care to not transfer any undissolved Calcium Sulfate. Use this solution in a room temperature of 70-90 degrees F. Apply this solution to the immaculately clean metal surface using a brush, swab, or low pressure non-atomized spray. Keep applying the solution until you get a light to dark brown color free of powder. Rinse with cold running water and air dry. Apply a primer and top coat. If I have to remove metal by file or mill I will clean the surface with MEK or Acetone followed up with the conversion process. Don’t use rubbing alcohol or laquer thinners to clean the surface. MEK or Acetone are “extremely” explosive and bad for you to breathe or get on your skin (the MEK).""""
Copper/ Mag cells..
In the cell the negative electrode always oxidizes. Which led me to believe the solution that John B wont release actually does this. I found a car forum speaking about cleaning and preventing, its word for word and this that may help solve this issue. NOT TESTED!!
""""Magnesium and magnesium alloys are extremely chemically active. I’ll keep this as short as I can for this forum. Commercial solutions are available but I’m 8 miles from my hangar at the moment and don’t have the names readily available. The following is from my notes and can be found in the FAA AC 43.13 of September 1998.
If you have a lightly corroded surface you can make up a chemical solution using 24 ounces of Chromium Trioxide and enough distilled water to make one gallon of solution. It will take from 1 to 15 minutes to react. I use a stainless steel pot to mix the solution. Use an acid brush or acid-resistant brush and apply the solution to the corroded area being careful to not allow this solution into cracks or from touching nearby areas you don’t want touched. Masking tape can be used to protect those areas. Allow the solution to remain on the surface for approx 15 minutes using the brush to agitate the solution. Flush clean the area with distilled water and then repeat the above until all the corrosion is removed and you have a bright metallic color.
To treat the clean magnesium to prevent further corrosion you can make up a solution that will convert the magnesium skin as follows using a stainless steel, vinyl, polyethylene, or rubber container: Take 1 gallon of distilled water. Add 1.3 ounces of Chromic ACID (CrO3). Then add 1 ounce of 99.5 pure Calcium Sulfate (CaSo4.2H2O). Mix vigorously for 15 minutes to ensure the solution is saturated with Calcium Sulfate. Wait 15 minutes and transfer the solution to glass polyethylene bottles taking care to not transfer any undissolved Calcium Sulfate. Use this solution in a room temperature of 70-90 degrees F. Apply this solution to the immaculately clean metal surface using a brush, swab, or low pressure non-atomized spray. Keep applying the solution until you get a light to dark brown color free of powder. Rinse with cold running water and air dry. Apply a primer and top coat. If I have to remove metal by file or mill I will clean the surface with MEK or Acetone followed up with the conversion process. Don’t use rubbing alcohol or laquer thinners to clean the surface. MEK or Acetone are “extremely” explosive and bad for you to breathe or get on your skin (the MEK).""""
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