Optimasi Parameter Proses Anodizing (Arus dan Waktu Perendaman) terhadap Sifat Fisik dan Ketahanan Korosi Lapisan Anodik Aluminium 6061

Rahman, Fauzan Aulia (2026) Optimasi Parameter Proses Anodizing (Arus dan Waktu Perendaman) terhadap Sifat Fisik dan Ketahanan Korosi Lapisan Anodik Aluminium 6061. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Aluminium banyak digunakan dalam industri otomotif untuk membuat komponen piston ataupun komponen otomotif lainnya. Namun, karena piston bekerja dalam kondisi ekstrem yang dapat mengurangi kinerja dan umur pakai piston, penggunaan aluminium pada komponen piston masih memiliki keterbatasan pada karakteristik permukaannya, terutama dalam aspek ketahanan aus dan korosi. Salah satu metode umum yang digunakan untuk meningkatkan karakteristik permukaan aluminium adalah proses anodizing, yaitu proses elektrokimia untuk membentuk lapisan oksida pelindung.
Pada penelitian ini bertujuan untuk mengetahui bagaimana pengaruh variasi arus dan waktu perendaman terhadap ketebalan lapisan, daya rekat lapisan, dan ketahanan korosi pada material aluminium 6061. Metode penelitian yang dilakukan adalah metode eksperimen, dengan menggunakan elektrolit H2SO4 dengan konsentrasi 20%, Tegangan 13 Volt, dan variasi arus (2A, dan 3A) dan menggunakan variasi waktu perendaman (10, 20, 30, 40, 50) menit. Hasil dari penelitian ini diperoleh nilai tertinggi pada pengujian ketebalan lapisan dengan metode coating thickness gauge, didapatkan sebesar 43,02 μm dengan parameter kuat arus 2A waktu perendaman 40 menit. Pengujian daya rekat lapisan dilakukan menggunakan metode pull-off test Type V (⌀ dolly 20mm), dengan memperoleh nilai terbesar pada parameter kuat arus 2A dengan waktu perendaman 50 menit sebesar 5,72 Mpa dan dengan dihasilkan tipe failure yaitu adhesive failure pada keseluruhan titik uji. Pengujian laju korosi dilakukan dengan metode weight loss, diperoleh nilai terendah pada parameter kuat arus 3A dengan waktu perendaman 50 menit sebesar 202,34 mmpy. Hasil dari penelitian ini adalah diharapkan dapat diperolehnya korelasi dan pengaruh antara parameter proses anodizing dengan pengujian karakteristik lapisan yang dihasilkan, sehingga dapat memberikan rekomendasi parameter yang optimal untuk meningkatkan kinerja dan ketahanan permukaan pada aluminium piston.
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Aluminum is widely used in the automotive industry to manufacture piston components and other automotive parts. However, because pistons operate under extreme conditions that can reduce their performance and service life, the use of aluminum in piston components is still limited by its surface characteristics, particularly in terms of wear and corrosion resistance. One common method used to improve the surface characteristics of aluminum is the anodizing process, an electrochemical process that forms a protective oxide layer.
The purpose of this study is to determine how variations in current and immersion time affect coating thickness, coating adhesion, and corrosion resistance in 6061 aluminum. The research method employed was experimental, using a 20% H₂SO₄ electrolyte, a voltage of 13 volts, and using variations current (2A and 3A) and immersion times (10, 20, 30, 40, and 50 minutes). The results of this study showed the highest value in the coating thickness test using a coating thickness gauge, which was 43.02 μm, obtained with a current of 2A and a immersion time of 40 minutes. Coating adhesion testing was conducted using the Type V pull-off test (⌀ dolly 20 mm), with the highest value recorded at a current of 2A and a immersion time of 50 minutes, amounting to 5.72 MPa, and resulting in adhesive failure at all test points. Corrosion rate testing was conducted using the weight loss method, yielding the lowest value of 202.34 mmpy at a current of 3A and a immersion time of 50 minutes. The results of this study are expected to reveal the correlation and influence between anodizing process parameters and the characteristics of the resulting coating, thereby providing recommendations for optimal parameters to improve the performance and surface durability of aluminum pistons

Item Type: Thesis (Other)
Uncontrolled Keywords: Anodizing, Aluminium, Piston, Arus, Waktu Perendaman, Ketebalan Lapisan, Daya Rekat, Ketahanan Korosi. Anodizing, Aluminium, Piston, Current, Immersion Time, Coating Thickness, Adhesion, Corrosion Rate.
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA418.75 Corrosion-resistant materials
T Technology > TA Engineering (General). Civil engineering (General) > TA418.9.C57 Coatings
T Technology > TA Engineering (General). Civil engineering (General) > TA455.A34 Adhesives
T Technology > TA Engineering (General). Civil engineering (General) > TA462 Metal Corrosion and protection against corrosion
T Technology > TA Engineering (General). Civil engineering (General) > TA480.A6 Aluminum alloys.
T Technology > TA Engineering (General). Civil engineering (General) > TA491 Metal coating.
T Technology > TJ Mechanical engineering and machinery
T Technology > TJ Mechanical engineering and machinery > TJ561 Surface
Divisions: Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User: Fauzan Aulia Rahman
Date Deposited: 10 Jul 2026 04:46
Last Modified: 10 Jul 2026 04:46
URI: http://repository.its.ac.id/id/eprint/134632

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