Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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The Corrosion Control Using CCPP(Calcium Carbonate Precipitation Potential )Index in Metallic Coupons

$CaCO_3$침전능 조절에 의한 금속시편에서의 부식방지

  • 이재인 (부산대학교 환경공학과) ;
  • 임진경 (부산대학교 환경공학과) ;
  • 서상훈 (부산대학교 환경공학과) ;
  • 김동윤 (부산대학교 환경공학과) ;
  • 신춘환 (동서대학교 환경공학과17)
  • Published : 2000.12.01
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Abstract

The purpose of this study was to evaluate the effects of $Ca(OH)_2$ and $CO_2$ additions on the corrosion of metal coupons(ductile iron, galvanized steel, copper and stainless steel). Corrosion rate and released metal ion concentration of ductile iron and galvanized steel decreased by adjusting alkalinity, calcium hardness and pH with $Ca(OH)_2$ & $CO_2$ additions on copper and stainless steel were less than those on ductile iron and galvanized steel. When ductile iron coupon was exposed to water treated with Ca(OH)$_2$&$CO_2$, additions, the main components of corrosion product formed on its surface were $CaCO_3$ and $Fe_2 O_3 or Fe_2 O_4$ which often reduce the corrosion rate by prohibiting oxygen transport to the metal surface.

Keywords

References

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