중성자 분석을 이용한 철제유물의 부식시스템 연구
Study of Corrsion System on Iron Artefacts through Neutronic Analysis
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초록
본 연구는 철제유물의 부식시스템 분석에 비파괴 분석법과 파괴 분석법을 함께 적용하여 중성자를 이용한 비파괴 분석의 철제유물 부식생성물 및 부식시스템 연구 활용 가능성을확인하기 위하여 진행하였다. 투과촬영 분석결과 유물의 형태, 금속층과 부식층의 경계 등을확인할 수 있으며 단층촬영을 통해서는 유물의 형태, 표면 형상, 내부 단면의 확인이 가능하였다. 잔류응력측정법을 이용한 부식두께는 다른 분석 결과와 비교하였을 때 오차 10% 미만으로신뢰성이 크므로 부식두께 측정에 활용 가능성이 큼을 확인하였다. 이번에 분석한 철제유물의부식층은 DPL의 유형 중 Goethite를 주요 상으로 하며 Magnetite/Maghemite가 박혀있는 형태로확인되었다. 중성자 분석은 비파괴적으로 부식두께 추정이 가능하므로 추가적인 연구를 통해철제유물의 매장환경별 부식속도 등을 연구하는데 활용 가능성이 큼을 확인하였다.
Abstract
This study was conducted to confirm the possibility of using the corrosion products ofiron artifacts and corrosion systems for non-destructive analysis using neutrons by applying thenon-destructive analysis method and the destructive analysis method together to the analysis of thecorrosion system of iron artifacts. As a result of transmission analysis, the shape of the artifact, theboundary between the metal layer and the corrosion layer, etc. could be confirmed, and throughtomography, the shape, surface shape, and internal cross section of the artifact could be confirmed. It was confirmed that the corrosion thickness using the residual stress measurement method has a highreliability of less than 10% of an error compared to other analysis results, so it is highly likely tobe used to measure the corrosion thickness. It was confirmed that the corrosion layer of the iron artifactanalyzed this time was mainly Goethite among the types of DPL and was embedded withMagnetite/Maghemite. Since the neutron analysis can estimate the corrosion thickness non-destructive,it is highly likely to be used to study the corrosion rate of iron artifacts by burial environment throughadditional studies.
참고문헌 (15)
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