한국해양대학교

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초임계수에서 SUS 316L의 전기화학적 부식측정 연구

Title
초임계수에서 SUS 316L의 전기화학적 부식측정 연구
Alternative Title
Electrochemical Measurement of Corrosion of SUS 316L in Supercritical Water Oxidation Environment
Author(s)
이무중
Publication Year
2007
Publisher
한국해양대학교 대학원
URI
http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002175971
http://repository.kmou.ac.kr/handle/2014.oak/10305
Abstract
Supercritical Water Oxidation (SCWO) has attracted considerable attention as an oxidation method for hazardous organic wastes like PCBs (Polychlorinated biphenyls), dioxine, TCE (Trichloroethylene). Although SCWO is technologically capable of the efficient destruction of hazardous wastes, the process must be carried out in a reactor that will withstand not only the conditions of high temperature and pressure, but also a very corrosive environment. Such problem of corrosion may ultimately be the deciding factor in the commercial application of this technology.

In this study, corrosion rates of Fe, Ni, Cr, Mo and SUS 316L were measured by LPR (Linear Polarization Resistance) method and weight loss method, in order to confirm the validation of electrochemical method in SCWO environment.

Corrosion test was performed under the condition of 400℃, 40 MPa in 0.1 M HCl solution. As corrosion rates of the metals obtained from LPR method were similar to those obtained from weight loss method, electrochemical method seems to effective method for corrosion. Also it was found that the main corrosion mechanism of SUS 316L was selective dissolution of Fe and Ni under the supercritical water condition.
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재료공학과 > Thesis
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