RuO 2-TiO 2 mixed oxide composite coating for improvement of Al-alloy sacrificial anodes

S. M.A. Shibli; V. S. Dilimon; V. S. Saji

doi:10.1007/s10008-005-0088-5

RuO ₂-TiO ₂ mixed oxide composite coating for improvement of Al-alloy sacrificial anodes

S. M.A. Shibli
, V. S. Dilimon
, V. S. Saji

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

It has been recently proved that RuO ₂ can act as an effective surface activator of aluminum alloy sacrificial anodes. TiO ₂ has the property of stabilizing RuO ₂ coating and resisting biofouling on metal surfaces. Hence, a mixed oxide catalytic coating of TiO ₂ and RuO ₂ can enhance the galvanic performance of aluminum alloy sacrificial anodes and resists biofouling on the anode surface. In the present work RuO ₂-TiO ₂ mixed oxide was coated on aluminum alloy sacrificial anodes. The large and uniform porous nature of the coating was found to facilitate efficient ion diffusion. The coating was found to persist on the anode even after 3 months of galvanic exposure. The anode having an optimum combination of the mixed oxide had 70% TiO ₂ as the major component in the coating. The catalytic coating significantly improved the performance of the anodes to a large extent.

Original language	English
Pages (from-to)	201-208
Number of pages	8
Journal	Journal of Solid State Electrochemistry
Volume	11
Issue number	2
DOIs	https://doi.org/10.1007/s10008-005-0088-5
State	Published - Feb 2007
Externally published	Yes

Keywords

Corrosion, aluminum, sacrificial anode, metal oxides, surface activation, biofouling

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Electrochemistry
Electrical and Electronic Engineering

Access to Document

10.1007/s10008-005-0088-5

Cite this

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title = "RuO 2-TiO 2 mixed oxide composite coating for improvement of Al-alloy sacrificial anodes",

abstract = "It has been recently proved that RuO 2 can act as an effective surface activator of aluminum alloy sacrificial anodes. TiO 2 has the property of stabilizing RuO 2 coating and resisting biofouling on metal surfaces. Hence, a mixed oxide catalytic coating of TiO 2 and RuO 2 can enhance the galvanic performance of aluminum alloy sacrificial anodes and resists biofouling on the anode surface. In the present work RuO 2-TiO 2 mixed oxide was coated on aluminum alloy sacrificial anodes. The large and uniform porous nature of the coating was found to facilitate efficient ion diffusion. The coating was found to persist on the anode even after 3 months of galvanic exposure. The anode having an optimum combination of the mixed oxide had 70\% TiO 2 as the major component in the coating. The catalytic coating significantly improved the performance of the anodes to a large extent.",

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author = "Shibli, \{S. M.A.\} and Dilimon, \{V. S.\} and Saji, \{V. S.\}",

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AU - Shibli, S. M.A.

AU - Dilimon, V. S.

AU - Saji, V. S.

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Y1 - 2007/2

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AB - It has been recently proved that RuO 2 can act as an effective surface activator of aluminum alloy sacrificial anodes. TiO 2 has the property of stabilizing RuO 2 coating and resisting biofouling on metal surfaces. Hence, a mixed oxide catalytic coating of TiO 2 and RuO 2 can enhance the galvanic performance of aluminum alloy sacrificial anodes and resists biofouling on the anode surface. In the present work RuO 2-TiO 2 mixed oxide was coated on aluminum alloy sacrificial anodes. The large and uniform porous nature of the coating was found to facilitate efficient ion diffusion. The coating was found to persist on the anode even after 3 months of galvanic exposure. The anode having an optimum combination of the mixed oxide had 70% TiO 2 as the major component in the coating. The catalytic coating significantly improved the performance of the anodes to a large extent.

KW - Corrosion, aluminum, sacrificial anode, metal oxides, surface activation, biofouling

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