COMPARISON OF PERFORMANCE CHARACTERISTICS OF SACRIFICIAL ANODE FROM CASTING
Abstract
ABSTRACT
Oil and gas pipelines, refineries and petrochemical plants have
serious corrosion problems. Internal corrosion in oil and gas
industry is generally caused by water, carbon dioxide (CO2)
and hydrogen sulfide (H2S), and also can be aggravated by
microbiological activities. One major way of combating
corrosion is through Cathodic protection. And this is achieved
by making a metal surface the Cathodic side of an
electrochemical cell (Anode). The primary aim of this project
consists of producing sacrificial anodes (zinc and aluminum)
from casting in a sand mold, and comparing their
performance characteristics with that of sintered production
process in an electro chemical cell to determine which will be
most suitable for the Cathodic protection of mild steel in other
to combat corrosion when subjected to environmental
conditions.
From the results obtained following industrial methods laid
down in this report, it was deduced in terms of zinc that a
sintered zinc electrode will serve as a better sacrificial anode
than a casted one. However, in the case of aluminum, no
difference observed in electronegativity, hence both method
of manufacturing will have no significant advantage in terms
of effectiveness.
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