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포화 수산화칼슘 수용액 내에서의 무기계 및 유기계 방청제의 전기화학적 방식 특성평가A Study on the Anti-corrosion Properties of Organic and Inorganic Inhibitor by Electrochemical Evaluation Method in Saturated Aqueous Solution of Calcium Hydroxide

Other Titles
A Study on the Anti-corrosion Properties of Organic and Inorganic Inhibitor by Electrochemical Evaluation Method in Saturated Aqueous Solution of Calcium Hydroxide
Authors
김수영류화성김성길이한승
Issue Date
Jul-2013
Publisher
한국구조물진단유지관리공학회
Keywords
유기계 방청제; 무기계 방청제; 전기화학적 기법; 분극저항; 부식전위; 부식속도; 아미노알코율유도체; Ogarnic inhibitor; Inorganic inhibitor; Electrochemical evaluation method; Polarization resistance; corrosion potential (Ecorr); Corrosion rate; Amino Alcohol inhibitor
Citation
한국구조물진단유지관리공학회 논문집, v.17, no.4, pp 66 - 74
Pages
9
Indexed
KCI
Journal Title
한국구조물진단유지관리공학회 논문집
Volume
17
Number
4
Start Page
66
End Page
74
URI
https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/29735
DOI
10.11112/jksmi.2013.17.4.066
ISSN
2234-6937
2287-6979
Abstract
본 연구에서는 부동태피막형 무기계 방청제와 흡착형 유기계 방청제를 대상으로, 시멘트세공용액을 모사한 포화 수산화칼슘 수용액내에서 염화물이온 농도와 방청성분 몰비를 변수로 하여 Potentiostat을 사용하여 부식전위, 부식속도, 분극저항을 측정하여 방식성능을 평가하였다. 그 결과, 무기계 방청제는 방청몰비 약 1.2 이상에서 방식성능을 확보하는 것으로 나타났고, 유기계 방청제는 방청몰비 약 0.3 이상에서 방식성능을 확보하는 것으로 나타났다. 또한, 부식속도와 분극저항, 부식속도와 부식전위의 관계는 선형 반비례 경향을 나타냈고, 분극저항과 부식전위는 선형 비례하는 것을 알 수 있었으며, 부식전위, 부식속도, 분극저항과의 상관관계는 유기계와 무기계 방청제에서 큰 차이가 없는 것으로 나타났다.
In this study, corrosion potential (Ecorr), corrosion rate, and polarization resistance were measured aimed at inorganic inhibitors (passive film type) and organic inhibitors (absorption type). The experiment was conducted using potentiostat for the variable molar ratio and chloride ion concentration of the components of inhibitors in an aqueous solution of saturated calcium hydroxide targeting corrosion. As a result, it was possible to ensure an anticorrosive performance of at least a 1.2 molar ratio of inorganic inhibitors. Also, the organic inhibitors ensured the prevention of the anticorrosive performance of at least about a 0.3 molar ratio. It also showed the tendency that between polarization resistance and corrosion rate, Ecorr and corrosion rate is inversely proportional to the linear. Conversely, the tendency between polarization resistance and Ecorr is proportional to the linear. Also, a distinct difference in organic and inorganic inhibitors’ relationship to Ecorr, corrosion rate, and polarization resistance was not shown.
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