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J Chin Soc Corr Pro  2010, Vol. 30 Issue (1): 72-77    DOI:
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EFFECTS OF THE SOLUBLE SALTS IN DESERT DUST ON ATMOSPHERIC CORROSION OF ALUMINIUM
ZHENG Qifei; SUN Shuangqing; WEN Junguo; LI Defu
General Research Institute for Nonferrous Metals; Beijing 100088
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Abstract  

Atmospheric corrosion of aluminium deposited with desert dust was simulated using a laboratory-accelerated test of cyclic wet-dry. Effects of the soluble salts in desert dust on atmospheric corrosion of aluminium were studied through mass loss, scanning electron microscope (SEM) and atmosphere corrosion monitor (ACM). The results demonstrated that the soluble salts in dust can widen the scope of relative humidity in which atmospheric corrosion occurs. Atmospheric corrosion of aluminium was getting more seriously with the increasing of the salt content in desert dust. MgCl2 in desert dust had the strongest influence on atmospheric corrosion of aluminium, then did NaCl, MgSO4 and Na2SO4 had the smaller influence.

Key words:  atmospheric corrosion      aluminium      accelerated test      desert dust      soluble salt     
Received:  18 August 2008     
ZTFLH: 

TG172.3

 
Corresponding Authors:  ZHENG Qifei     E-mail:  zhengqf@grinm.com

Cite this article: 

ZHENG Qifei; SUN Shuangqing; WEN Junguo; LI Defu. EFFECTS OF THE SOLUBLE SALTS IN DESERT DUST ON ATMOSPHERIC CORROSION OF ALUMINIUM. J Chin Soc Corr Pro, 2010, 30(1): 72-77.

URL: 

https://www.jcscp.org/EN/     OR     https://www.jcscp.org/EN/Y2010/V30/I1/72

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