PENGARUH KONDISI TANAH ASAM DAN CACAT GORES BERBENTUK PERSEGI PANJANG PADA LAPIS LINDUNG TERHADAP KEBUTUHAN ARUS PROTEKSI SISTEM IMPRESSED CURRENT CATHODIC PROTECTION (ICCP) DENGAN MENGGUNAKAN BAJA AISI 1045
ABSTRACT: Corrosion is
degradation of the metal due to an oxidation reaction between the metal with many
substances that exist in the environment around them and form undesirable
compounds. Corrosion can not
be prevented, but
still can be
controlled its speed.
One of the
corrosion control process in a material can be used a coating and cathodic protection by providing
a forced flow. At this time the research conducted will learn about the effect
of the rectangular scratch defect and the acid soil pH to the needs of current
protection in the impressed current cathodic
protection system (ICCP).
The variation of given scratch
is rectangular with
each area of 10 mm2, 50 mm2, 100 mm2, 150 mm2, 250 mm2 and 500 mm2.
While the differences in soil pH use
is pH 3,
pH 5, and
pH 7. Then
there is also
a specimen without
scratch and without layers
of protection that
is used as
a comparison. In
the ICCP system
installation, AISI 1045 steel is used as the cathode and graphite as the
anode. The system used a rectifier that is useful for current rectifier. The
flow of the ICCP protection is set such that the value of the potential
difference can reach
-850 mV against
the reference electrode
Cu / CuSO4. Measurement of the current protection
on the ICCP system performed during the 7 days with daily data retrieval. After
obtained the measurement of the current protection value, showed that the
greatest current protection value with 500 mm2 defect area in acidic soils (pH
3) that is equal to
1.696 mA. While
the smallest current
protection in area
of 10 mm2
with normal soil that
is equal to
0.032 mA. The
influence of these
two variables were
calculated using multiple
regression statistical analysis so as to get the equation Y = 0,11 + 0,008 X1 +
0,0004 X2. Where the
value of X1
as soil pH
conditions, X2 as
scratch defect, and
Y as current protection.
Penulis: Tubagus Noor
Rohmannudin, Sulistijono, Faris Putra Ardiansyah
Kode Jurnal: jptindustridd150359
