Inhibisi Korosi Baja SS 304 dengan Kinina Sulfat dalam Media 1 M H₂SO₄

Nugraheni, Zjahra Vianita (2012) Inhibisi Korosi Baja SS 304 dengan Kinina Sulfat dalam Media 1 M H₂SO₄. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Inhibisi korosi baja SS 304 dalam larutan 1 M H₂SO₄ dengan kinina sulfat telah diteliti dengan metode pengurangan berat, polarisasi potensiodinamik dan Electrochemical Impedance Spectroscopy (EIS). Efisiensi inhibisi meningkat dengan meningkatnya konsentrasi inhibisi pada variasi 25-125 mg/L. Sedangkan pada variasi konsentrasi 150-200 mg/L efisiensi inhibisi kembali turun. Penambahan ion I⁻ sebesar 1,0 × 10⁻³ M ke dalam larutan 1 M H₂SO₄ dengan adanya inhibitor menyebabkan laju korosi baja SS 304 semakin menurun dan efisiensi inhibisi meningkat. Ketiga metode yang digunakan menunjukkan pola inhibisi yang sama. Efisiensi inhibisi optimum terjadi pada konsentrasi kinina sulfat 125 mg/L dalam larutan 1 M H₂SO₄. Adsorpsi molekul kinina sulfat sesuai dengan adsorpsi isoterm Langmuir.
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Corrosion inhibition of SS 304 steel in 1 M H₂SO₄ solution with quinine sulphate was investigated by use of weight loss method, polarization potentiodynamic measurements and electrochemical impedance spectroscopy (EIS). Inhibition efficiency increased by increasing the inhibitor concentration at various 25-125 mg/L. While inhibitor concentration at various 150-200 mg/L, inhibition efficiency was decreased. The addition of 1,0 × 10⁻³ M I⁻ ions to a solution of 1 M H₂SO₄ in the presence of inhibitors causes of the inhibition efficiency increased. The three methods used are showed the same pattern of inhibition. The optimum inhibition efficiency and the minimum corrosion rate occur at the concentration of quinine sulphate 125 mg/L in 1 M H₂SO₄ solution. The adsorption of quinine sulphate molecules was found to follow Langmuir's isotherm adsorption model.

Item Type:	Thesis (Other)
Additional Information:	RSKi 620.112 23 Nug i
Uncontrolled Keywords:	Efisiensi inhibisi, kinina sulfat, H₂SO₄,Inhibition efficiency, quinine sulphate, H₂SO₄.
Subjects:	Q Science > QD Chemistry > QD481 Chemical structure.
Divisions:	Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	magang .
Date Deposited:	16 Oct 2026 03:54
Last Modified:	16 Oct 2026 03:54
URI:	http://repository.its.ac.id/id/eprint/145641

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