STUDI KARAKTERISASI LAJU KOROSI LOGAM ALUMINIUM DAN PELAPISAN DENGAN MENGGUNAKAN MEMBRAN SELLULOSA ASETAT
DOI:
https://doi.org/10.22441/jtm.v6i1.1204Abstract
Korosi terjadi akibat adanya reaksi oksidasi dan reduksi antara material dengan lingkungannya. Reaksi oksidasi diartikan sebagai reaksi yang menghasilkan elektron dan reduksi adalah antara dua unsur yang mengikat elektron . Korosi merupakan peristiwa yang tidak mungkin dielakan dalam kehidupan baik dalam lingkungan industri maupun rumah tangga. Korosi tidak dapat dihilangkan, namun dapat dikendalikan lajunya. Secara teoritis, menurut tabel deret volta, Aluminium merupakan logam yang mudah terkorosi. Pada penelitian ini dilakukan upaya untuk mengkarakterisasikan jenis korosinya dengan menggunakan media asam lemah (asetat), asam kuat (HCl), dan basa kuat (KOH). Pada percobaan dengan menggunakan media asam lemah (asetat), korosi yang terjadi adalah korosi sumuran (pitting corrosion). Pada percobaan menggunakan media asam kuat (HCl), pada konsentrasi rendah yang terjadi adalah korosi sumuran, sedangkan pada konsentrasi tinggi yang terjadi adalah korosi erosi. Salah satu metode pencegahan terjadinya korosi yaitu dengan menggunakan metode pelapisan (coating). Pada penelitian ini, upaya yang dilakukan untuk memperlambat laju korosinya adalah dengan cara melapisi logam dengan “Sellulosa Asetat”(CA). Sellulosa asetat terdiri dari powder sellulosa dilarutkan dengan asam asetat 99%, kemudian diaplikasikan pada logam aluminium. Hasil percobaan perendaman dengan media asam asetat, yang terjadi adalah bahwa sellulosa asetat membuat laju korosi semakin meningkat sebesar 54% dibanding sebelum dilapisi. Pada percobaan perendaman dengan menggunakan asam HCl, sellulosa asetat mampu memperlambat laju korosi sebesar 47.479%. Dan pada percobaan perendaman dengan larutan KOH, efisiensi inhibisinya mencapai 255% lajunya lebih cepat dibandingkan sebelum dilapisi. Hal ini terjadi dikarenakan adanya proses deasetilasi dimana proses ini adalah proses terputusnya gugus asetil pada membran sellulosa asetat sehingga kemampuan menempel pada permukaan logam menjadi menurun.Downloads
References
Gelman. D., Shvartsev.B, and Ein.E.Y. (2014). Aluminum–Air Battery Based On An Ionic Liquid Electrolyte. Journal of Materials Chemistry A. doi: 10.1039/c4ta04721d.
Gita Anggaretno., Imam Rochani., Heri Supomo. 2012. Korosi pada Pengelasan Pipa API 5L Grade X65 dengan Media Korosi FeCl3. Jurnal Teknik ITS, Vol. 1, No. 1, ISSN: 2301-9271.
In-Joon Son, Nakano Hiroaki, Satoshi Oue, Shigeo Kobayashi, Hisaaki Fukushima, Zenji Horita. (2008). Pitting Corrosion Resistance of Anodized Auminum-Copper Alloy Processed by Severe Plastic Deformation. Jurnal The Japan Institute of Metal, Vol. 49, No. 11 pp. 2648 to 2655, doi: 10.2320/matertrans.MRA2008216.
J.J. Martin, V. Neburchilov, H. Wang, and W. Qu., 2009. Air cathodes for metal-air batteries and fuel cells. In Electrical Power Energy Conference (EPEC), pages 1 –6.
J.R. Davis. (1999). Corrosion of Aluminum and Aluminum Alloys (#06787G). ASMS specialty Handbook International.
Jake.C. Paul.A., Roel.S.S.C. Timm.L. Boris.K., Ralf. Jasim.A. Aleksandar.K. (2012). A Critical Review of Li/Air Batteries. Journal of The Electrochemical Society. doi: 10.1149/2.086202jes.
Jang-Soo Lee, Sun Tai Kim, Ruiguo Cao, Nam-Soon Choi, Meilin Liu, Kyu Tae Lee, and Jaephil Cho. (2011). Metal–Air Batteries with High Energy Density: Li–Air versus Zn–Air. Advanced Energy Materials. doi: 10.1002/aenm.201000010.
Joseph Wang. (2006). Analytical Electrochemistry. 3rd Edition, John Wiley & Sons.Inc, New Jersey.
Kirsi Yliniemi., Benjamin. P. Wilson., Ferdinand Singer., Sarah HÖhn., Eero Kontturi., Sannakaisa Virtanen. 2014. Dissolution Control of Mg by Cellulose Acetate-Polyelectrolyte Membranes. Journal American Chemical Society, Vol. 6, pp 22393-22399. doi: 10.102/am5063597.
Mohamad, A.A. (2008). Electrochemical Properties of Aluminum Anodes in Gel Electrolyte Based Aluminum-Air Batteries. Corrosion Science. Doi: 10.1016/j.corsci.2008.09.001.
Natishan, P. M. & O’Grady, W. E. O. (2014). Chloride Ion Interaction with Oxide-Covered Aluminum Leading to Pitting Corrosion: A Review. Journal of The Electrochemical Society, 161 (9) C421-C432, doi: 10.1149/2.1011409jes.
Prihandoko Bambang,. & Achmad Subhan. 2011. Pemanfaatan Soda Lime Silica Dalam Pembuatan Komposit Elektrolit Baterai Lithium. Disertasi Fakultas Teknik: Universitas Indonesia.
Sagir Alva dan Mohd Rais Ahmad. (2011). Metal-Air Cell and Method of Fabricating Thereof, Patents, WIPO, WO 2011/139140 A2.
Sumarji, 2012. Evaluasi Korosi Baja Karbon Rendah ASTM A36 Pada Lingkungan Atmosferik Dikabupaten Jember. Jurnal ROTOR.
Suratman Rochim, (2001). Karakteristik Korosi Aluminium dan Baja Tahan Karat. Jurnal Sains dan Teknologi Nuklir Indonesia, Vol. II, No 1, 27-38.
Tamborim, S. M., Dias, S. L. P., Silva, S. N., Dick, L. F. P., Azambuja, D. S. 2011. Preparation and Electrochemical Caracterization of Amoxicilin-doped Cellulose Acetate Films for AA2024-T3 Aluminum Alloy Coatings. Corrosion Science Elsevier, 53, doi: 10.1016/j.corci.2011.01.034.
Vincenzo. C., & Benedetto.B. (2014). Materials Science Aspects of Zinc–Air Batteries: A Review. Mater Renew Sustain Energy. doi: 10.1007/s40243-014-0028-3.
Yoichiro Yamashita., Takeshi Endo. 2003. Deterioration Behavior of Cellulose Acetate Films in Acidic or Basic Aqueous Solutions. Journal of Applied Polymer Science, Vol. 91, 3354-3361.
Yugang Sun. (2013). Lithium Ion Conducting Membranes for Lithium-Air Batteries. Nano Energy.
Zheng, J.P.,Liang, R.Y.,Hendrickson,M., Plichta,E.J. (2008). Theoretical Energy Density of Li–Air Batteries. J. Electrochem. Soc.
Downloads
Published
How to Cite
Issue
Section
License
The copyright to this article is transferred to Universitas Mercu Buana (UMB) if and when the article is accepted for publication. The undersigned hereby transfers any and all rights in and to the paper including without limitation all copyrights to UMB. The undersigned hereby represents and warrants that the paper is original and that he/she is the author of the paper, except for material that is clearly identified as to its original source, with permission notices from the copyright owners where required. The undersigned represents that he/she has the power and authority to make and execute this assignment.
We declare that:
1. This paper has not been published in the same form elsewhere.
2. It will not be submitted anywhere else for publication prior to acceptance/rejection by this Journal.
3. A copyright permission is obtained for materials published elsewhere and which require this permission for reproduction.
Furthermore, I/We hereby transfer the unlimited rights of publication of the above mentioned paper in whole to UMB. The copyright transfer covers the exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online) or any other reproductions of similar nature.
The corresponding author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. This agreement is to be signed by at least one of the authors who have obtained the assent of the co-author(s) where applicable. After submission of this agreement signed by the corresponding author, changes of authorship or in the order of the authors listed will not be accepted.
Retained Rights/Terms and Conditions
1. Authors retain all proprietary rights in any process, procedure, or article of manufacture described in the Work.
2. Authors may reproduce or authorize others to reproduce the Work or derivative works for the authors personal use or for company use, provided that the source and the UMB copyright notice are indicated, the copies are not used in any way that implies UMB endorsement of a product or service of any employer, and the copies themselves are not offered for sale.
3. Although authors are permitted to re-use all or portions of the Work in other works, this does not include granting third-party requests for reprinting, republishing, or other types of re-use.
This work is also licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
