CORROSION OF COPPER ALLOYS IN MARINE SPLASH ZONE

J Chin Soc Corr Pro

2005, Vol. 25

Issue (2): 65-69 DOI:

Research Report

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CORROSION OF COPPER ALLOYS IN MARINE SPLASH ZONE

Guiqiao Huang

青岛海洋腐蚀研究所

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Abstract Corrosion results of 12 types of copper alloys exposed to marine splash zone at Qingdao Sea area of China were reported. Corrosion behavior and law of copper alloys in splash zone was summarized. Corrosion rate of copper alloys in splash zone was low. Corrosion type of copper alloys was uniform corrosion in splash zone for short period exposure.Exposing to splash zone for long period,copper alloys occurred not serious pitting and crevice corrosion.Their maximum pitting depths in splash zone at Qingdao Sea area for 16 years were less than 0.3mm.Brass had tendency of dezincification corrosion; and Cu-Ni alloys took place denickel corrosion.Corrosion rate of pure copper and bronzes fell with exposure time.Corrosion rate of HMn58-2 and HSn62-1exposed to splash zone during 1~4years fell with exposure time,after which the corrosion rate raised with exposure time.Corrosion rate of HAl77-2 and BFe10-1-1rose slowly with exposure time.Exposing to splash zone for long time, xorrosion resistance of copper alloys in splash zone was better than that in full immersion zone and tide zone, and was poorer than that in marine atmosphere.

Key words: corrosion copper marine splash zone

Received: 19 September 2003

ZTFLH:

TG172.5

Corresponding Authors: Guiqiao Huang

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Cite this article:

Guiqiao Huang. CORROSION OF COPPER ALLOYS IN MARINE SPLASH ZONE. J Chin Soc Corr Pro, 2005, 25(2): 65-69 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2005/V25/I2/65

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