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옥외 청동문화재 보존을 위한 BTA 방청 피막의 특성에 미치는 코팅 조건의 영향
심규태 ( G. T. Shim ),유영란 ( Y. R. Yoo ),권용혁 ( Y. H. Kwon ),김영식 ( Y. S. Kim ) 대한금속·재료학회 2009 대한금속·재료학회지 Vol.47 No.10
Many ancient and historical artifacts were made by copper and its alloys. In the case of outdoor exposure artifacts, the surface could be suffered from corrosion and tarnish by the reaction with its environment. In order to preserve the artifacts, surface treatment would be needed and BTA coating has been usually applied to tin-bronze. This paper dealt with the evaluation of the properties of BTA coated film using a linear polarization method and AC impedance measurement. On the base of corrosion rate and film resistance for the specimen formed by coating process, optimum coating conditions are as follows; 3 cycles brushing or 3 cycles spraying coatings for natural dried process and 1 cycle brushing coating or 5 cycles spraying coating for hot-air dried process.