Corrosion Performance of Aluminum and Stannum as Beverage Packaging

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The corrosion performance of tinplate (Sn) and aluminum (Al) can as beverage packaging was studied in different acidity of soft drinks available in market. The research objective is to evaluate the acidity of different beverage to corrosion attack. The performance of coating layer provides by manufacturer to enhance corrosion attack was studied as well as corrosion mechanism penetrate on these nonferrous alloy. Electrochemical analysis was used to identify breakdown potential and corrosion damage was analyzed using SEM and energy dispersive spectrometry. Overall, the corrosion rates of stannum are much higher than aluminum for both new and used packaging. From Tafel results, the most corrosion resistant performed by soft drink 1 with pH 2.45 in aluminum packaging followed by manufactured aluminum. Corrosion resistance reduced in tinplate followed by manufactured tinplate. The most corrosion resistance condition was found on the aluminum sheet without manufacturing process that immersed in soft drink A according to its lowest corrosion rate 0.0703mm/yr, followed by manufactured aluminum sheet immersed in soft drink A with second lowest corrosion rate 0.0711mm/yr. All cyclic curves in this test showed that there was no pitting occurred on specimens as the reverse anodic curve was shifted to lower currents and negative hysteresis was produced. From SEM analysis, aluminum was oxidized and oxide film formed on surface to protect the material whereas the tinplate can was corroded and holes produced after electrochemical test. In both corrosion rate measurement and microscope analysis, it was clearly proved that aluminum can had more anti-corrosion properties than tinplate can. There was showed that some leading effect due to can manufacturing to an increasing corrosion rate to the metal beverage cans.

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Edited by:

Al Emran Ismail, Muhamad Zaini Yunos, Reazul Haq Abdul Haq and Said Ahmad

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88-94

Citation:

A. Ismail et al., "Corrosion Performance of Aluminum and Stannum as Beverage Packaging", Key Engineering Materials, Vol. 791, pp. 88-94, 2018

Online since:

November 2018

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$38.00

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[1] J.S. Lankind (2013), Can Coatings for Food and Beverages: Issues and Options , Int. J. Technology, Policy and Management, vol. 13, no. 1, pp.80-95.

[2] Steven Bluden, Tony Wallace (2003), Tin in Canned Food : A Review and Understanding of Occurrence and Effect.

[3] Flaten T.P. (2001), Aluminium as A Risk Factor in Alzheimer's Disease, with emphasis on drinking water, Department of Chemistry, Norwegian University of Science and Technology, Trondheim, Norway.

[4] A.Nincevic Grassino, Z.Grabaric, A.Pezzani, G.Squitieri, G.Fasanaro & M.Impembo (2009), Corrosion Behavior of Tinplate in Contact with Tomato Puree and Protective (inhibiting) substances, Food Additives & Contaminants: Part A, 26:11, 1488-1494.

DOI: https://doi.org/10.1080/02652030903161580

[5] Rerum Naturalium (2011), Protection of Aluminium Alloy(AA7075) from Corrosion by Sol-Gel Technique.

[6] N. Anyadike (2002), Aluminium: The Challenges Ahead. Cambridge, England: Woodheard Publishing.

[7] B. Zaid, D. Saidi, A. Benzaid & S. Hadji (2008), Effects of pH and Chloride Concentration on Pitting Corrosion of AA6061 Aluminium Alloy, Elsevier Ltd.

DOI: https://doi.org/10.1016/j.corsci.2008.03.006

[8] FAO (2004), Proposed Draft Code of Practice for the Prevention and Reduction of Tin Contamination in Foods, Codex Alimentarius Commission, Joint FAO/WHO Food Standards Programme, FAO, Viale delle Terme di Caracalla,00100 Rome, Italy.

DOI: https://doi.org/10.1016/s0956-7135(97)90037-2

[9] AFSA (2011), Corrosion Resistance of Aluminium and Protective Measures where Appropriate, compiled and published by Aluminium Federation of South Africa.

[10] Nawal Abdel, Gayoum Abdel and Rahman (2015), Tin-plate Corrosion in Canned Foods, Canning Technology Department, Food Research Centre, Shambat, Khartoum North, Sudan.

[11] Berlinet C., Brat P., Ducruet V. (2008), Quality of Orange Juice in Barrier Packaging Material, Packaging Technol. Sci. 21, 279-286.

DOI: https://doi.org/10.1002/pts.802