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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    No. 4    August 2009

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Effects of thickness of Al thermal spray coating for STS 304
Min-Su HAN1, Yong-Bin WOO1, Seok-Cheol KO2, Young-Jae JEONG3,
Seok-Ki JANG1, Seong-Jong KIM1

1. Division of Marine Engineering, Mokpo Maritime University, Mokpo City, Jeonnam, 530-729, Korea;
2. Chungnam Regional Innovation Agency, 506 Jiksan-eup, Sameun-ri, Cheonan City, Chungnam, 330-816, Korea;
3. Jeonnam Techno Park, Suncheon City, Jeonnam, 540-856, Korea

Abstract:Thermal spray coating presents a sacrificial-anode cathodic protection method since differences between the potentials of materials are employed. If a base metal is exposed to seawater, due to defect in the thermal spray coating, the metal is protected by the sacrificial anodic characteristics of the coating layer because micro-cells formed by the base metal and the thermal spray coating act as cathodes and anodes, respectively. The coating thickness has little effect on the surface morphology of the coating. However, the electrochemical properties with the increasing of coating thickness present good results.

 

Key words: aluminum; thermal spray coating; STS 304

ISSN 1672-7029
CN 43-1423/U

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