High phosphorus deposits are recommended to deliver the maximum corrosion resistance possible from an electroless nickel coating. Where a design engineer needs to achieve the best wear resistance, medium phosphorous electroless nickels are the preferred choice.
铝组件可以使用Oxidi阳极氧化膜te processes. This additional treatment increases the corrosion protection, wear resistance and improves appearance. Furthermore, the anodized surfaces for decorative reasons can be colored during the anodizing process or painted afterwards.
Chromium-free conversion coatings such as Iridite NCP, provide corrosion protection equal to chromate finishes on most aluminum alloys. The coating can be used as a final finish and can also serve as a base for high performance topcoats, powder paints, lacquers, or as a base for rubber bonding and is completely free of chromium and does not contain cobalt.
MacDermid Enthone KeyKote and ACTANE pre-treatment systems have been designed to prepare a clean and active metallic surface which will allow immediate initiation in the electroplating process. The first stages remove oils from the porous substrate. After removing oxides and residuals from the casting process, the next stage ensures the surface is smut-free with support from ultrasonic and electrolytic cleaning. The surface can now be activated for the subsequent plating process.