Optimasi Proses Pelapisan Anodisasi Keras Pada Paduan Aluminium

Febriyanti, Eka

doi:10.14203/metalurgi.v26i2.15

Cited by 4 publications

(4 citation statements)

References 1 publication

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“…The best anodized layer thickness of 89.6 m was obtained from the hard anodization study with a temperature of 9 °C, oxalic acid of 2 wt%, and anodization time of 60 min. The hard anodization study with a temperature of 5 °C, oxalic acid of 1 wt%, and anodization time of 30 min yielded the highest anodized layer hardness of 515 HV [15]. Another anodizing process is carried out with a variation of the current strength of 0.75, 1.5, 2, 25, and 3 A with variations in immersion time of 30, 40, 50, and 60 min in Fig.…”

Section: Related Workmentioning

confidence: 96%

Characterization of Anodizing Process on Aluminum Series 6 with Variable Voltage

Wisnujati¹,

Wijayanto²,

Widodo³

et al. 2022

Proceedings of the First Mandalika International Multi-Conference on Science and Engineering 2022, MIMSE 2022 (Mechanical and E

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Anodizing is one way of coating oxidation on aluminum, which is carried out by anodic oxidation at room temperature with the help of an electric current so that a chemical reaction occurs so that a layer is produced that can protect the metal from the effects of corrosion. The objective of this study was to determine the characterization of variations in electric voltage on surface hardness in the anodizing aluminum series 6. Specimens were made with dimensions of 50 mm × 25 mm with a thickness of 10 mm, then the cleaning process was carried out with a solution of sodium carbonate (Na 2 CO 3 ) with a concentration of 50 gr/100 ml of reverse osmosis (RO) water. The etching, desmut, and anodizing processes were continued with a solution concentration of 400 ml of sulfuric acid (H 2 SO 4 ) and 600 ml of RO water. The electric voltage variables used were 20, 24, and 28-V with a current of 2 A and an immersion time of 10 min. The results of the highest hardness test on a variable voltage of 20-V with a Vickers hardness value of 59.117 VHN. This proves that anodizing treatment on the surface of aluminum material with a variable voltage of 20 V will produce a high Vickers hardness value. These results indicate that the toughness of the material on the anodized specimen is also affected by the magnitude of the electric voltage.

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Section: Related Workmentioning

confidence: 96%

Characterization of Anodizing Process on Aluminum Series 6 with Variable Voltage

Wisnujati¹,

Wijayanto²,

Widodo³

et al. 2022

Proceedings of the First Mandalika International Multi-Conference on Science and Engineering 2022, MIMSE 2022 (Mechanical and E

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“…Hard Anodizing merupakan sebuah metode elektrokimia yang bertujuan mengubah permukaan aluminium menjadi lapisan pasif dalam bentuk oksida (Al 2 O 3 ) dengan menerapkan arus listrik kedalam larutan anodizing yang merupakan asam sulfat (H 2 SO 4 ) [3]. Proses tersebut membuat aluminium alloy memiliki peningkatan sifat mekanik seperti hardness dan ketahanan abrasi yang lebih baik dari logam yang dilapisi [4].…”

Section: Pendahuluanunclassified

Analisa Pengaruh Perubahan Rapat Arus Terhadap Pembentukan Passive Layer Al2O3 pada Proses Hard Anodizing Material QQA-250/4, AMS 4037

Romadhoni¹,

Agussalim²,

Risanti³

2017

JTITS

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Hard anodizing merupakan salah satu surface treatment yang diberikan pada logam aluminium dengan memanfaatkan prinsip elektrolisis untuk membentuk lapisan pasif di permukaan logam dasar. Pada penelitian ini digunakan aluminum alloy 2024 T3, dimana material ini memiliki sifat mekanik material lebih kuat jika dibandingkan dengan aluminium biasa namun memiliki ketahanan korosi yang buruk diakibatkan kandungan unsur tembaga (Cu) pada campuran ini. Salah satu variabel yang mempengaruhi proses ini adalah rapat arus yang digunakan. Penelitian ini dilakukan dengan memvariasikan rapat arus, yaitu 2 A/dm 2 , 4 A/dm 2 , dan 6 A/dm 2. Dari hasil penelitian yang didapatkan nilai ketebalan, kekerasan, coating weight, dan ketahanan abrasi memiliki kecenderungan untuk naik. Untuk sifat elektrokimia nilai V corr pada rapat arus 6 A/dm 2 yang memiliki sifat paling reaktif yaitu sebesar-0,465 V dikarenakan kualitas oksida yang terbentuk memiliki porositas yang paling rendah. Kemudian untuk nilai I corr didapatkan nilai paling kecil adalah pada rapat arus 4 A/dm 2 dengan 7,82 x 10-9 A, hal tersebut mempengaruhi nilai laju korosi pada rapat arus ini menjadi yang paling rendah juga dengan nilai laju korosi sebesar 1,42 x 10-10 mm/yr. Berdasarkan penelitian ini, rapat arus 4 A/dm 2 merupakan rapat arus yang paling optimum. Kata kunci-hard anodizing, rapat arus, sifat mekanik, sifat elektrokimia.

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“…This study used a sulfuric acid based electrolyte because sulfuric acid was an electrolyte that can be used in almost all alloys with a copper content limit not exceeding 5.0% and silicon not exceeding 7.0% [13]. In addition, this research also tries to optimize the mechanical properties of the coating by adding variations of oxalic acid H2C2O4 into the electrolyte solution [14].…”

Section: Introductionmentioning

confidence: 99%

Military Type III Anodizing: The Optimal Limit Within Hardening Process of Aluminium Alloy in a Near Zero Temperature

Adyono¹,

Lestari²,

Endahwati³

2021

Proceedings of the 2nd Borobudur International Symposium on Science and Technology (BIS-STE 2020)

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Hard anodization was a method that can enhance aluminium alloy surface characteristics by growing an aluminum anodic oxide (AAO) film on it surface. This method was very applicable to obtain a thick and hard coating. This process was carried out at galvanostatic-potentiostatic mode at high current densities (j = 4.2 A/dm2), high target voltages (Vt = 30-60 V) and low electrolyte temperature. Two sulfuric acid electrolyte was compared, the first solution was sulfuric acid 11% vol., the second one was sulfuric acid 11% vol. plus oxalic acid 1% wt, both of them was conditioned at <5°C. The maximum AAO film thickness and hardness obtained was 110.01 µm and 400 HV. The increasment of target voltage was directly proportional to the increase in thickness and hardness of the AAO film. The results of this study could be synergized with the manufacturing process of aluminum alloy-based (Al6061) components at the product finishing stage. The logarithmic regression in the function of target voltage could be used to estimate film thickness and hardness of the films.

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Optimasi Proses Pelapisan Anodisasi Keras Pada Paduan Aluminium

Cited by 4 publications

References 1 publication

Characterization of Anodizing Process on Aluminum Series 6 with Variable Voltage

Characterization of Anodizing Process on Aluminum Series 6 with Variable Voltage

Analisa Pengaruh Perubahan Rapat Arus Terhadap Pembentukan Passive Layer Al2O3 pada Proses Hard Anodizing Material QQA-250/4, AMS 4037

Military Type III Anodizing: The Optimal Limit Within Hardening Process of Aluminium Alloy in a Near Zero Temperature

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