Consumable and non-consumable thermal spray anodes for impressed current cathodic protection of reinforced concrete structures

Conference · Thu Jan 01 00:00:00 EST 1998

OSTI ID:351786

Covino, Jr, B S; Cramer, S D; Bullard, Sophie J; Holcomb, Gordon R; Collins, Wesley K ^[1]; McGill, G E ^[2]

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1. Dept. of Energy, Albany, OR (United States). Albany Research Center
2. Oregon Dept. of Transportation, Salem, OR (United States)

A comparison is presented of some of the differences between thermal spray Zn, a consumable anode, and catalyzed thermal spray Ti, a non-consumable anode, used for impressed current cathodic protection of reinforced concrete structures. The thermal spray process for both Ti and Zn is compared using the spray parameters, atomizing gases, spray rate, and cost. The thermal spray Ti and Zn coatings are compared in terms of physical properties, composition, and structure. Results of accelerated laboratory experiments are presented and comparisons between Ti and Zn are made on the effect of electrochemical aging on voltage requirements, bond strength, coating resistivity, water permeability, and anode-concrete interracial composition.

• Research Organization: ARC (Albany Research Center (ARC), Albany, OR)
• Sponsoring Organization: USDOE - Office of Fossil Energy (FE); Oregon Department of Transportation, Salem, OR
• OSTI ID: 351786
• Report Number(s): DOE/ARC-1998-023; CONF-980316--; TRN: IM9927%%311
• Resource Relation: Conference: Corrosion `98, San Diego, CA (United States), 22-27 Mar 1998; Other Information: PBD: 1998; Related Information: Paper 658 in Corrosion `98: 53. annual conference and exposition, proceedings; PB: [6600] p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
REINFORCED CONCRETE
ZINC
ANODES
TITANIUM
COMPARATIVE EVALUATIONS
SPRAY COATING
CATHODIC PROTECTION
zinc
titanium
thermal spray
cathodic protection
impressed current
catalyst
interfacial chemistry
steel-reinforced concrete
bridge
bond strength
water permeability
pH
resistivity
electrochemical aging