engleski

Influence of gamma irradiation on thin film surface coating of copper

Copper is a reddish-gold metal that is easily worked and drawn, it conducts both heat and electricity very well. Because of its very good properties it has a wide range of applications and is exposed to various often aggressive environments. Therefore, additional protection is required to enhance the protective properties of its naturally formed oxide film. Formation of a thin protective film on the copper surface is a good and practical way to enhance the metal’s natural protective properties. Fatty acids are non-toxic compounds which have an affinity for adsorbing on metals with their hydrophobic end, the carboxyl group. The other end of fatty acids, the methyl group, has hydrophobic properties and when adsorbed on the metal surface it makes the whole surface of the metal appear hydrophobic. Thus by blocking access for water to the surface the dissolution of the metal is disabled [2]. Elaidic acid is a monounsaturated fatty acid found in hydrogenated vegetable oils. Because of its specific shape that it has thanks to the trans form of the double bond its molecules are close-packed on the surface of copper making the coating very compact and water difficult to approach the surface.

gamma irradiation ; coppe ; fatty acids ; self assembling monolayer

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