Kesan Pemendapan Elektroforesis Gam Arab terhadap Halaju Kakisan pada Aluminium 5052

Translated title of the contribution: Electrophoresis deposition Arabic gum effect on aluminium 5052 reduce corrosion

I. Gusti Ayu Arwati, Edy Herianto, Wan Ramli Wan Daud, Kee Shyuan Loh, Arifin Khuzaimah, Teuku Husaini, Sagir Alva, Nabilah Afiqah Mohd Radzuan

Research output: Contribution to journalArticle

Abstract

Bipolar plates are one of the main components of proton exchange membrane fuel cells (PEMFC). Aluminum alloy (Al5052) is one of the metals used as a bipolar plate because it has a high conductivity, light weight. However, the acidic PEMFC system (pH3-6) is easy for Al5052 ingredients to experience corrosion so as to reduce PEMFC achievement. Therefore, in order to reduce the prevailing sidewalks, this study used a green Arabic gum inhibitor with an electrophoresis deposition (EPD). The impression of a 0.5 gL-1 Arabic gum-coated Al5052 plate sidewalk in the sulphuric acid solution was tested using an electrochemical method and a morphological test. The surface morphology of Al5052 coated with Arabic gum appeared to be smoother and homogeneous compared to uncoated surface and the cross section of the coating thickness was between 7.5 μm and 8.8 μm. Effect of temperature increase (30°C-90°C) on the interfacial contact resistance (ICR) value of the uncoated Al5052 will decrease from 11.8552 to 9.9042 mO cm2 where the Arabic gum coated has a value of 13,3497 to 11,812 mO cm2. The results showed that Arabic gum can provide protection against metal surfaces where the test using linear tafel polarization technique in 0.5 M H2SO4 (pH4) solution with corrosion current value (Icorr) decreased from 0.00264 to 0.00012 μA cm-2. Despite that, the corrosion rate reduced from 3.06 × 10-5 mpy to 1.61 × 10-6 mpy as being coted with Arabic gum. It can be concluded that Arabic gum and coating techniques with EPD can be used to reduce corrosion on the Al5052 plate, therefore, the life span of this material is longer and may reach the targets set by the DOE for bipolar plates.

Original languageMalay
Pages (from-to)401-406
Number of pages6
JournalSains Malaysiana
Volume48
Issue number2
DOIs
Publication statusPublished - 1 Feb 2019

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Proton exchange membrane fuel cells (PEMFC)
Electrophoresis
Corrosion
Aluminum
Coating techniques
Contact resistance
Metals
Corrosion rate
Surface morphology
Aluminum alloys
Polarization
Coatings
Acids
Temperature

ASJC Scopus subject areas

  • General

Cite this

Kesan Pemendapan Elektroforesis Gam Arab terhadap Halaju Kakisan pada Aluminium 5052. / Arwati, I. Gusti Ayu; Herianto, Edy; Wan Daud, Wan Ramli; Loh, Kee Shyuan; Khuzaimah, Arifin; Husaini, Teuku; Alva, Sagir; Radzuan, Nabilah Afiqah Mohd.

In: Sains Malaysiana, Vol. 48, No. 2, 01.02.2019, p. 401-406.

Research output: Contribution to journalArticle

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abstract = "Bipolar plates are one of the main components of proton exchange membrane fuel cells (PEMFC). Aluminum alloy (Al5052) is one of the metals used as a bipolar plate because it has a high conductivity, light weight. However, the acidic PEMFC system (pH3-6) is easy for Al5052 ingredients to experience corrosion so as to reduce PEMFC achievement. Therefore, in order to reduce the prevailing sidewalks, this study used a green Arabic gum inhibitor with an electrophoresis deposition (EPD). The impression of a 0.5 gL-1 Arabic gum-coated Al5052 plate sidewalk in the sulphuric acid solution was tested using an electrochemical method and a morphological test. The surface morphology of Al5052 coated with Arabic gum appeared to be smoother and homogeneous compared to uncoated surface and the cross section of the coating thickness was between 7.5 μm and 8.8 μm. Effect of temperature increase (30°C-90°C) on the interfacial contact resistance (ICR) value of the uncoated Al5052 will decrease from 11.8552 to 9.9042 mO cm2 where the Arabic gum coated has a value of 13,3497 to 11,812 mO cm2. The results showed that Arabic gum can provide protection against metal surfaces where the test using linear tafel polarization technique in 0.5 M H2SO4 (pH4) solution with corrosion current value (Icorr) decreased from 0.00264 to 0.00012 μA cm-2. Despite that, the corrosion rate reduced from 3.06 × 10-5 mpy to 1.61 × 10-6 mpy as being coted with Arabic gum. It can be concluded that Arabic gum and coating techniques with EPD can be used to reduce corrosion on the Al5052 plate, therefore, the life span of this material is longer and may reach the targets set by the DOE for bipolar plates.",
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author = "Arwati, {I. Gusti Ayu} and Edy Herianto and {Wan Daud}, {Wan Ramli} and Loh, {Kee Shyuan} and Arifin Khuzaimah and Teuku Husaini and Sagir Alva and Radzuan, {Nabilah Afiqah Mohd}",
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AU - Herianto, Edy

AU - Wan Daud, Wan Ramli

AU - Loh, Kee Shyuan

AU - Khuzaimah, Arifin

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AU - Radzuan, Nabilah Afiqah Mohd

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AB - Bipolar plates are one of the main components of proton exchange membrane fuel cells (PEMFC). Aluminum alloy (Al5052) is one of the metals used as a bipolar plate because it has a high conductivity, light weight. However, the acidic PEMFC system (pH3-6) is easy for Al5052 ingredients to experience corrosion so as to reduce PEMFC achievement. Therefore, in order to reduce the prevailing sidewalks, this study used a green Arabic gum inhibitor with an electrophoresis deposition (EPD). The impression of a 0.5 gL-1 Arabic gum-coated Al5052 plate sidewalk in the sulphuric acid solution was tested using an electrochemical method and a morphological test. The surface morphology of Al5052 coated with Arabic gum appeared to be smoother and homogeneous compared to uncoated surface and the cross section of the coating thickness was between 7.5 μm and 8.8 μm. Effect of temperature increase (30°C-90°C) on the interfacial contact resistance (ICR) value of the uncoated Al5052 will decrease from 11.8552 to 9.9042 mO cm2 where the Arabic gum coated has a value of 13,3497 to 11,812 mO cm2. The results showed that Arabic gum can provide protection against metal surfaces where the test using linear tafel polarization technique in 0.5 M H2SO4 (pH4) solution with corrosion current value (Icorr) decreased from 0.00264 to 0.00012 μA cm-2. Despite that, the corrosion rate reduced from 3.06 × 10-5 mpy to 1.61 × 10-6 mpy as being coted with Arabic gum. It can be concluded that Arabic gum and coating techniques with EPD can be used to reduce corrosion on the Al5052 plate, therefore, the life span of this material is longer and may reach the targets set by the DOE for bipolar plates.

KW - Aluminium 5052

KW - Bipolar plates

KW - Corrosion current density

KW - Electrophoresis deposition

KW - Green inhibitor Arabic gum

KW - Interfacial contact resistance

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