Influence of SO2 Concentration on Initial Corrosion of Aluminum in Marine Atmosphere

De Sheng Han; Di Li; Tian Liang Zheng

doi:10.4028/www.scientific.net/AMR.15-17.53

Paper Titles

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Casting and Extrusion of 7003 Alloy Billets Having Complete Feathery Crystal by Using Unidirectional Solidifying Process
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Influence of SO₂ Concentration on Initial Corrosion of Aluminum in Marine Atmosphere
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Influence of Cooling Rate on the Size of the Precipitates and Thermal Characteristic of Al-Si Cast Alloys
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Bone Tissue Engineering: Natural Origination or Synthetic Polymeric Scaffolds?
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Preparation and Characterisation of New Titanium Based Alloys for Orthopaedic and Dental Applications
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Engineering Biomaterials Surfaces Using Micropatterning
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Influence of SO₂ Concentration on Initial Corrosion of Aluminum in Marine Atmosphere

Abstract:

Influence of SO2 concentration on initial corrosion of aluminum was studied in simulated marine atmosphere. Variation of initial corrosion morphology, relation between weight gain and time in the course of initial corrosion, corrosion speed (token with maximum pitting depth and weight gain) were analyzed and discussed. Primary results is list below: In marine atmosphere, SO2 sedimentation above 0.1 mg/100cm2 can accelerate Al pitting with low Cl- sedimentation. Both corrosion weight gain and pitting depth increase obviously. For pitting surface of LY12 with SO2 and Cl- sedimentation, corrosion potential change little, Nyquist Graph was single arc of capacitance resist with retractile real part, Rr can’t reflect corrosion degree.