The surface provides corrosion resistance for up to six months. Black oxide does not contribute to wear resistance of the part. Another option is to have ball screws polished. Manganese phosphate coatings produce a flat black to grey finish on steel components. This may make parts look dull.
Manganese phosphate is one of the best wear resistant coatings.
It traps oil in the coating and acts as an automatic lubricator. The coating, especially when oiled, retards corrosion. Electrodeposited Coatings Electrodeposited coatings include copper, zinc, cadmium, and thin dense chrome. The electrodeposition plating process works on an atomic level and produces a strong bond with the base material for superior adherence. Copper plating is one of the easiest to apply and one of the least expensive electroplatings.