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논문 기본 정보

자료유형
학술저널
저자정보
이수열 (충남대학교) 송민지 (충남대학교) 최가현 (충남대학교) 김우철 (한국지역난방공사)
저널정보
한국부식방식학회 Corrosion Science and Technology CORROSION SCIENCE AND TECHNOLOGY 제22권 제2호
발행연도
2023.4
수록면
115 - 122 (8page)
DOI
10.14773/cst.2023.22.115

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This study aimed to elucidate causes of corrosion of heat transport pipes and air vents installed under amanhole of heat transport facilities and suggest effective anticorrosive measures by applying paints oradhesive tapes. It was found that air vent corrosion was attributed to corrosion under insulation caused bythe inflow of water and the enrichment of chloride ions. The infiltrated water caused a hydrolysis of polyurethanefoam (PUF) insulation by concentrating chloride ions at the interface between a pipe and the PUF. As insulator deteriorated, more chloride ions were eluted as confirmed by ion chromatograph (IC) analysis. As an effective method to prevent air vent corrosion, different types of paints and adhesive tapes withhigher corrosion resistance on chloride ions were applied and environmental resistance tests were performedwith those samples. Based on environmental test results of samples exposed to 10% HCl solution,it was revealed that a wax tape was the most adequate from a viewpoint of stability at operating condition,environmental resistance, surface treatment, and field applicability.

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