Abstract
This work investigated the service performance of nickel-coated manganese steel in both normal high-chloride (clean) and low-sulphate high-chloride (polluted) seawater environments (typical offshore oil and gas production environments). Structural manganese steels coated with nickel together with the control were tested for corrosion characteristics using the weight loss method. It was found that the nickel coat was able to resist corrosion overtime via spontaneous formation of passive oxide films at ambient temperatures. Analysis of resulting corrosion rates underscored the viability of nickel coating at inhibiting severe corrosion owing to the harsh chloride- and sulphate-containing seawater typical of the oil and gas production environments.
Highlights
It is estimated that industry spends $276 billion annually on corrosion
Each corrosion rate curve is characterized with an initial peak owing to rapid interaction between the samples and their environment
It was observed that the electrodeposited nickel coat on the steel gave it a protection against corrosion
Summary
It is estimated that industry spends $276 billion annually on corrosion. Corrosion is the deterioration of a material or its properties in a given service environment. It is the partial or complete wearing away, dissolving, or softening of any substance by chemical or electrochemical reaction with its environment. The term corrosion applies to the gradual action of natural agents, such as air or salt water, on metals. It is a state of deterioration in metals caused by oxidation or chemical action [10]. Natural systems often place the machine part as the anode while the prevailing environment makes up the electrolyte [8, 9]
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