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Analisa Laju Korosi Logam tak Sejenis pada Berbagai Jenis Logam
Authors: Jahirwan Ut Jasron
Number of views: 707
Corrosion attack can not be prevented, but we can control so that the structure of the components have a longer life, one way to inhibit the rate of corrosion is by way of coupling (decouplet) was a kind of metal to form a simple wet corrosion cell. In a study made, used metal steel, aluminum, brass with a length of 6 cm, width 2.5 cm, thickness 3 mm and 4 mm diameter bolt holes, having done the research process by way of corrosion rate immersed in sea water from each place the container on its own steel-aluminum, aluminum-brass-brass and steel separate individual. Time variation of the corrosion test is 408 hours, 744 hours, 1080 hours, 1416 hours, 1752 hours and 2088 hours. The results achieved corrosion steel-aluminum: 408 hours corrosion time of steel 0.009 mm-year and increased 0.02 mm-year at 2088 hours, 408 hours of corrosion when aluminum 0.1 mm-year and decreased 0.05 mm-year at 2088 hours, aluminum, brass: aluminum corrosion time of 408 hours 0.08 mm-year and decreased 0.04 mm-year at 2088 hours, the corrosion of brass 408 hours 0.02 mm-year and decreased 0.01 mm-year at 2088 hour, steel-brass: steel corrosion time of 408 hours 0.10 mm-year and decreased 0.04 mm-year at 2088 hours, 408 hours of corrosion of the brass 0.009 mm-year and increased 0.01 mm-year at 2088 hours. Great influence on the rate of corrosion galvanic series of low alloy steels, aluminum alloys and aluminum brass decouplet unfit for low alloy steels and aluminum alloys because it has close proximity to the series while decouplet aluminum alloys brass aluminum and steel alloys decouplet low aluminum brass decouplet should not be, because it has a long way in the series.