Abstract
Brass is an excellent material choice for use in most industrial and agricultural application. Brass offers much better thermal conductivity and corrosion resistance than carbon or even stainless steel. Brass is an excellent material for use in both hot and cold water industrial and residential system including those carrying portable water. This study was carried out to investigate and evaluate the influence of fossil fuel like petrol, kerosene and diesel on the corrosion performance of brass. The samples were prepared for the study by cutting brass into 1 cm2 coupons and soaking them in different small plastic containers containing petrol, kerosene and diesel. The corrosion rate of each sample for a specific period of immersion (120, 240, 360, and 480, 600 and 720 hours) was determined on average of three samples exposed under the same condition and test media in different container. The finding showed that brass is resistant to corrosion after long hours of contact in chosen liquid fossil fuels. Brass has the highest corrosion rate in petrol, followed by kerosene and least in diesel. The photomicrographs of the samples after ten days of immersion also confirmed this.
Highlights
The most common brass is nominal brass which contains 70% copper and 30% zinc
Brass should not be used in ammonia or nitrogen compound because of corrosive product form by brass in this environment and when it comes to machining, brass is much easier to cut than most ferrous materials
Corrosion rates of brass in petrol, kerosene and diesel were low after long immersion period
Summary
The most common brass is nominal brass which contains 70% copper and 30% zinc. It is known as “cartridge brass” this brass is subjected to dezincification if left for long times in water, the zinc disappears and the metal has a dull copper color as copper is all that is left on the surface. Brass is an excellent material choice for use in most industrial and agricultural application. Brass is an excellent material for use in both hot and cold water industrial and residential system including those carry portable water. Brass provides excellent resistance to corrosion in contact with petroleum products. Brass can be nickel plated to further reduce tarnishing and corrosion or to provide a silver finish. Some examples of applications that are nickel plated for these purposes are door knobs, plumbing fixtures, gears and bearings [1]
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