ANALYSIS OF THE EFFECT OF VARIATIONS IN CERIUM COMPOSITION OF 0.39%, 0.61%, and 1.07% AND SALINITY OF 2.9% and 3.4% NaCl ON THE EFFICIENCY OF ALUMINUM SACRIFICIAL ANODES USING THE DNV RP-B401 METHOD

Fachri, Muhammad (2024) ANALYSIS OF THE EFFECT OF VARIATIONS IN CERIUM COMPOSITION OF 0.39%, 0.61%, and 1.07% AND SALINITY OF 2.9% and 3.4% NaCl ON THE EFFICIENCY OF ALUMINUM SACRIFICIAL ANODES USING THE DNV RP-B401 METHOD. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

As time goes by, problems related to corrosion emerge with the discovery of new solutions to control it. One of the corrosion controls, namely cathodic protection by sacrificing anode vessels, is often used on hulls, tankers, port structures, docks, offshore platforms, etc.. The anode, as a more reactive metal, dissolves first and is sacrificed to protect the iron. Aluminum metal is used more often than other types of galvanic anodes in marine environments because of its relatively low consumption rate. Aluminum as a sacrificial anode was added with the element Cerium in this research at levels of 0,39%, 0,62% and 1,07% through a casting process. Furthermore, XRF/OES, XRD, Metallography, SEM-EDX, EIS, and Potentiodynamic tests were carried out, as well as sacrificial anode efficiency testing using the DNV RP-B401 standard with salinity variations of 2.9% and 3.4% NaCl for sacrificial anode applications in estuary and sea areas. The addition of the rare earth element Cerium to the Aluminum sacrificial anode can form Al11Ce3 compounds at the grain boundaries which can refine the grain size and thus improve the electrochemical properties. Thus, the addition of Cerium acts as a grain refiner in the Aluminum sacrificial anode. The addition of the rare earth element Cerium to the Aluminum sacrificial anode can increase the efficiency of the sacrificial anode to 94.12% in a 2.9% NaCl solution and 90.03% in a 3.4% NaCl solution on an Al-0.61wt%Ce sample. The addition of 0.61% Cerium is the optimal point to increase the efficiency of the sacrificial anode in this research. Increasing NaCl levels in the solution can reduce efficiency due to the aggressive nature of chloride which reduces the potential value so that it is very easily corroded which ends in waste and casualties.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Aluminium, Corrosion, Sacrificial Anode, Cerium, Aluminium, Anoda Korban, Korosi, Cerium
Subjects:	V Naval Science > VC Naval Maintenance
Divisions:	Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Fachri
Date Deposited:	05 Aug 2024 01:54
Last Modified:	05 Aug 2024 01:54
URI:	http://repository.its.ac.id/id/eprint/111008

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