MICRO-DROPLETS PHENOMENON AND ATMOSPHERIC CORROSION—— Ⅰ. Formation and spreading of micro-droplets

J Chin Soc Corr Pro

2006, Vol. 26

Issue (4): 207-210 DOI:

Research Report

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MICRO-DROPLETS PHENOMENON AND ATMOSPHERIC CORROSION—— Ⅰ. Formation and spreading of micro-droplets

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广东海洋大学海洋资源与环境监测中心

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Abstract he formation of the electrolyte droplet due to the deliquescence of soluble salt particles is one of the cause for the acceleration of atmospheric corrosion.A lot of micro-droplets,1 μm～10 μm in diameter,were observed around the edge of the main-droplet formed by the deliquescence of salt particles deposited on metal surface in atmosphere.In this paper,the characteristics of the formation and spreading of the micro-droplets were investigated in detail in a humidity-controlled chamber.The results showed that oxygen,relative humidity and a combination of salt particles and metals played important role in the formation of micro-droplets.Two premises were necessary for the formation of micro-droplets in atmosphere.First,the relative humidity should exceed the saturated relative humidity of the main-droplet.Another was that the metal substrate could be eroded under the main-droplet.

Key words: micro-droplets phenomenon formation and spreading environment parameters atmospheric corrosion

Received: 18 May 2005

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TG172.3

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;. MICRO-DROPLETS PHENOMENON AND ATMOSPHERIC CORROSION—— Ⅰ. Formation and spreading of micro-droplets. J Chin Soc Corr Pro, 2006, 26(4): 207-210 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2006/V26/I4/207

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