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8406389 
Journal Article 
Effect of water on steel corrosion under supercritical CO2 conditions 
Zhang, Y; Gao, K; Schmitt, G 
2011 
0 
Materials Performance
ISSN: 0094-1492 
50 
6 
62-68 
English 
The corrosiveness of carbon dioxide aqueous solutions for steels and other iron-based alloys is well known, and carbon dioxide corrosion mechanisms have been developed for various environmental conditions. Prior to the experiment, the coupon surfaces were mechanically polished with silicon carbide (SiC) paper progressively up to 800 grit, and then subsequently cleaned by immersion under ultrasonic action in hexane (5 min), acetone (5 min), and methanol (5 min). The pits obviously grew at surface sites where droplets from the water mist had become sessile. No localized attack was observed on the coupon surfaces of the corrosion-resistant alloys (CRA). Pitting corrosion at sites of sessile water drops may stop or will be retarded in propagation after fast initial pit growth. This should be subject to further investigations.