Studienarbeit aus dem Jahr 2018 im Fachbereich Ingenieurwissenschaften -
Metallbautechnik / Metallverarbeitung, Sprache: Deutsch, Abstract:
Corrosion is a crowing term regarding the ferrous metals which
accomplishes premonitory issues on such metals with backing of the
conditions of surrounding environment. According to the consistency
ofcrude oils it tends to bear a hand of metallic corrosion foremost the
effect of sulfur compounds, salts and organic acids that presence in
crude oils. The investigation of the corrosion rates of seven different
types of ferrous metals referring to both Murban and Das Blend crude
oils and some essential episodes regarding the corrosion were the
leading intention of the research. The sulfur contents, salt contents,
mercaptans contents and acidities of both crude oils were determined by
in succeed of XRF analyzer, salt analyzer and titration methods while
testing the chemical composition of each metal by XRF detector. A batch
of equal sized metal coupons was prepared from each type of metal and
dipped entirely in both crude oils separately. The rate of corrosion in
each metal coupon was determined by the weight loss method after 15, 30
and 45 days from the immersion while observing the corroded surface of
each coupon by an optical microscope. The ferrous concentrations and
copper concentrations in crude oil samples weretested by the AAS after
the interactions with metals and the hardness of each metal coupon was
tested before the immersion in crude oil and after corroded. There were
found relatively lower corrosion rates from stainless steels than other
the metals while finding some higher metallic concentrations in crude
oils regarding carbon steels, slight reduction of the hardness after the
corrosion and finally it can be concluded the formation of FeS,
corrosion cracks and pitting corrosion in most of occasions with the
microscopic observations regarding the appearances of such a compound.
Keywords: Ferrous metals, Crude oils
