Corrosion should be removed from magnesium parts with a

Corrosion should be removed from magnesium parts with a

• A. Fine steel brush
• B. Wire brush
• C. Soft cloth
• D. Stiff, nonmetallic brush

Answer: (D)

Removing corrosion from magnesium parts must be done with a method that cleans off the corrosion without scratching or contaminating the metal. A stiff, nonmetallic brush is best because it can scrub away the oxide and corrosion products effectively while leaving the magnesium surface intact. Magnesium is relatively soft, so using metal brushing tools can gouge the surface and deposit iron or other metals into the magnesium, which can set up galvanic corrosion and accelerate deterioration. A nonmetallic brush removes the corrosion without introducing metal particles and without sparking, which is especially important around magnesium. A soft cloth won’t remove heavy corrosion, and metal brushes (steel or wire) are too harsh and risk contamination and damage.

Removing corrosion from magnesium parts must be done with a method that cleans off the corrosion without scratching or contaminating the metal. A stiff, nonmetallic brush is best because it can scrub away the oxide and corrosion products effectively while leaving the magnesium surface intact. Magnesium is relatively soft, so using metal brushing tools can gouge the surface and deposit iron or other metals into the magnesium, which can set up galvanic corrosion and accelerate deterioration. A nonmetallic brush removes the corrosion without introducing metal particles and without sparking, which is especially important around magnesium. A soft cloth won’t remove heavy corrosion, and metal brushes (steel or wire) are too harsh and risk contamination and damage.