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KMID : 1024520000090060505
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Journal of the Environmental Sciences
2000 Volume.9 No. 6 p.505 ~ p.509
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The Corrosion Control Using CCPP(Calcium Carbonate Precipitation Potential )Index in Metallic Coupons
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Lee Jae-In
Lim Jin-Kyoung
Seo Sang-Hoon
Kim Dong-Youn
Shin Choon-Hwan
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Abstract
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The purpose of this study was to evaluate the effects of and 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 & 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)&, additions, the main components of corrosion product formed on its surface were and which often reduce the corrosion rate by prohibiting oxygen transport to the metal surface
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