Data analysis of the corrosion protection performance of aminobenzene concentrations on 1070 aluminum alloy in dilute HCl solution
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Gravimetric and statistical analysis was used to assess the protection performance of
aminobenzene compound on 1070 aluminum alloy in 1 M HCl solution in volumetric
concentrations of 2.5%, 5%, 7.5%, 10%, 12.5% and 15%. Data output shows aminobenzene
performed poorly at lower concentrations (2.5% to 10% aminobenzene concentrations) with
highest value of 61.3% at 10% concentration and 480 h of exposure time. However, at higher
concentrations the corrosion and oxidation of the aluminium surface was effectively
suppressed with peak value of 81.7% at 480 h of exposure. Aminobenzene inhibition
performance was determined to be highly concentration dependent with limited variation with
respect to observation time. Standard deviation data showed significant variation of protection
performance data at lower aminobenzene concentrations due to variation of the protection
performance data with respect to observation time and thermodynamic instability of the
inhibition mechanism. At 12.5% and 15% aminobenzene concentration the standard deviation
values visibly decreased due to improved inhibition performance. Data also showed that only
31.67% of the protection performance data is above 70% inhibition efficiency at margin of
error of +8.32%. Data from analysis of variance shows inhibitor concentration is the only
statistical relevant factor at 75.57% responsible inhibition output of aminobenzene on the
aluminium alloy compared to observation time with statistical relevance value of 12.28%.
Keywords
TJ Mechanical engineering and machinery