CORROSION ANUYSIS OF NICKEL, AND GOLD PLATED CARBON STEEL ORNAMENTALS IN SULPHURIC ACID MEDIUM

ABSTRACT

This study investigated the corrosion resistance of Nickel and Gold plated carbon steels ornamentals in 0.5rno~dd Suphuric acid (&SO4) medium. Nickel plating of carbon steel ' was done in watts solution for 25 minutes with a current density of 3 Aldrn3 at 60°C. The nickel plated carbon steel was later gold plated for 20 minutes with a current density of 0.2 A,ldm3 at 50°C . The plated and unplated carbon steels were exposed to environment for 15 days. The weight loss was taken every 24 hours in order to evaluate Corrosion penetration rate (CPR). The results obtained showed that plated carbon steel generally offered a betrer cornsion resistance than the unplated carbon steels. The conclusion that can be drawn from this study is that: Nickel plated dn steel is found to be more reliable material to be used as ornrunentals than gold plated carbon steel in HzS04 environment.