• 대한금속재료학회지
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• 제47권10호
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• pp.652-659
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• 2009

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.

• 한국표면공학회지
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• 제46권5호
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• pp.197-207
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• 2013

In the midst of increasing importance of modern cultural assets, especially, most modern bronze objects are exposed to outdoor environment, and as the objects are corroded steadily due to environmental factors the objects lost their original colors on the surface. We performed artificial patinas on the bronze sample per each color of red, black and green and checked cuprite and tenorite which are detected from actual bronze corrosion by analyzing the components. In addition, we applied the existing corrosion removal methods of grinder and sand blaster on a similar sample of bronze mirror per injection pressure and performed comparative analysis on the result with Nd:YAG laser. As a result of Nd:YAG laser cleaning artificial patina from bronze samples, all of the patinas were removed by laser wavelength 1064 nm better than 532 nm. Upon applying to a similar sample of bronze mirror, the artificial patina could be selectively removed from substrates without surface damage when Nd:YAG laser was conducted other than the existing removal method, and so it showed the possibility of application.

• 보존과학회지
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• 제33권3호
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• pp.155-165
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• 2017

공공 예술 조각품과 야외 조형물에 대한 관심과 함께 미술품 보존 관리의 중요성이 높아지고 있다. 야외 조각작품의 경우, 장기간 대기 중에 노출되어 대기오염물과 자연재해 등의 이유로 부식과 열화 등의 손상이 발생하게 되는데, 국립현대미술관 야외조각공원에 전시중인 김찬식의 '정' 역시 부식으로 인해 작품표면의 파티나층이 손상되었다. 따라서 상태조사, 표면연마, 재파티네이션, 왁스코팅 등의 보존처리를 진행하였으며, 그 결과 원형에 가까운 복원을 이룰 수 있었다. 작품의 재질특성에 대한 분석 결과, 구리, 주석, 아연, 납으로 주조된 미술 공예용 청동임을 확인하였다. 작품 표면연마 후 관찰되는 용접, 균열, 밝은 얼룩의 재질 특성 중, 용접부위는 바탕금속보다 구리를 제외한 나머지 주요원소의 함량이 비교적 적은 경향을 보였으며, 밝은 얼룩은 주석과 납의 함량이 13.0 wt%, 10.5 wt%로 바탕금속(주석: 7.0 wt%, 납: 4.4wt%)보다 높게 측정되었다. 또한 미세조직 관찰결과, 작품의 제작은 열처리를 비롯한 인위적인 가공이 가해지지 않은 주조기법이 사용된 것으로 추정되었다.

• Journal of Korean Society for Atmospheric Environment
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• 제19권E2호
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• pp.51-61
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• 2003

The material exposure tests have been carried out since 1993 to evaluate the relationship between air pollution and material corrosion with the cooperation of the researchers in Japan, China, and Korea. The test pieces such as bronze, copper, marble, and carbon steel have been exposed under both unsheltered and rain-sheltered outdoor condition separately at 18 sampling sites in East Asia. At the same time, the concentration of SO$_2$ and NO$_2$ has been measured simultaneously with passive sampler. The meteorological data were collected from the AWS (Auto-mated weather station) In each country and chemical compositions of wet deposition were also analyzed by the bulk sampling of rainfall every month. As the results, it was found that the corrosion rates of test pieces in the ambient air were appeared to be in the order of carbon steel > marble > bronze copper. The corrosion rates of test pieces in the unsheltered outdoor condition were 2.34 to 5.88 times larger than those in rain-sheltered condition. It was also found that the corrosion rate in the heavy polluted area in China was the highest, and the corrosion rates of the metal pieces were generally proportional to SO$_2$ concentration. Between two sites in Korea, the test pieces at Daegu site showed higher corrosion rates that would be due to the higher SO$_2$ concentration.

• 보존과학회지
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• 제34권4호
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• pp.259-271
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• 2018

Outdoor copper alloy is exposed to the atmospheric environment, accelerating corrosion progress compared with indoor copper alloy. In order to prevent corrosion, the outdoor copper alloy is coated with wax to block external corrosion factors. However, corrosion of the inside of the coating film is highly likely to continue without the internal corrosion prevention treatment. B.T.A, which is used as a copper alloy water-soluble corrosion inhibitor, has a high possibility of being harmful to the human body and is mainly used to treat excavated artifacts. This study had selected the water-soluble corrosion inhibitor, which was easier to use than the existing wax and B.T.A being used in corrosion inhibition treatment for outdoor copper alloy. A comparative study was conducted on B.T.A, which is a water-soluble corrosion inhibitor used on excavated artifacts, and $VCI^{(R)}$, $Rus^{(R)}$, and L-cys, an amino acid corrosion inhibitor, used for tin bronze test pieces. The experimental method was conducted for a certain period of time with the salt, acid, and air pollution affecting the corrosion of outdoor copper alloy. Based on experiment results, it was concluded that the best water - soluble copper alloy corrosion inhibitor in the atmospheric environment is $VCI^{(R)}$. and it could be considered to be applied in replacement of B.T.A due to its low harmfulness. In addition, $VCI^{(R)}$ is judged to serve as a corrosion inhibitor for outdoor copper alloy because it showed the best result even in the outdoor exposure test which is a real atmospheric environment.

• 한국조경학회지
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• 제33권3호
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• pp.43-55
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• 2005

Since 1990s, increasing number of public arts have been installed in housing projects in Korea. Most of them were made of granite, bronze and stainless steel and were sculptures as well. Then it resulted in monotony. New technology and community need various Dials in material and genre of Public art. The author wonders if people really want granite sculpture, so started the study of public arts in housing projects. Unfortunately most of people related public art wanted granite sculpture. But there were some hope in survey. They wanted the other genre and material like ceramic wall, art fountain and landmark tower. This means that they care about real world like vandalism and Product Liability, but also want more fantastic and beautiful world in the second step. Recently, the facades of apartments are changing rapidly as more diverse materials in their forms, textures, and colors. And landscape designs are changing their clothes in every second as well. According to these flows public arts in apartments needs more diversified trial within genres and materials to avoid monotonous outdoor.

• 한국환경과학회지
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• 제11권5호
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• pp.445-454
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• 2002

Material exposure experiments were performed to evaluate the relationship between air pollution and material corrosion rates based on collaboration with researchers in China, Japan, and Korea. Qualitative and quantitative atmospheric corrosion was estimated from damage caused to bronze, copper, steel, marble, cedar, cypress, and lacquer plates exposed to outdoor and indoor conditions in certain East Asian cities. The effects of atmospheric and meteorological factors on the damage to the copper plates and marble pieces were estimated using a regression analysis. The results indicated that sulfur dioxide produced the most destruction of the materials, especially in South Korea and China. In Japan, the copper plates were damaged as a result of natural conditions and sea salt. Copper was also found to be damaged by the surface deposition of sulfur and chlorine. Meanwhile, marble was substantially degraded by gaseous sulfur dioxide, yet sulfate ions in rain had no effect. Accordingly, the analysis of air pollution from the perspective of material damage was determined to be very useful in evaluating and substantiating the intensity of air pollution in East Asia.

• 한국조경학회지
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• 제39권2호
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• pp.1-9
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• 2011

본 연구는 롯데 부여리조트의 외부공간 중 백제 테마정원을 대상으로 한다. 리조트는 백제역사재현단지 내에 있으며, 이 사업은 '백제문화권 특정지역 종합개발 계획' 중의 하나이다. 백제정원은 역사적으로 유구할 뿐만 아니라 고대 일본에 영향을 주었을 정도로 양식에서도 뛰어났다고 할 수 있는데, 본 연구에서는 이러한 백제정원의 재현 방식을 공간적으로 구현했다. 구체적 내용으로는 첫째, 백제정원을 롯데 부여리조트에 조성하게 된 배경과 과정을 살펴봄으로써 백제정원의 공간적 구현 방식을 설정하는 것이다. 둘째, 백제 정원의 조경사적 의미와 함께 현재까지 문헌연구와 발굴을 통해 밝혀진 백제 정원의 양식적 특성에 대한 것이다. 셋째, 리조트 외부공간에서 백제정원 재현의 공간적 실현 방식을 제안하는 것이다. 본 연구의 내용에서 재현은 구조 적용과 구성요소 차용 차원에서 이루어졌다. 구조 적용에서는 임류각 공간을 주진입공간으로 하여 관북리 백제 유적을 재현한 월선정 공간을 인접하여 배치하였다. 이 두 공간을 통해서는 건축과 정원의 관계를 보여주는데 주력했다. 후면에는 후원 성격을 지닌 익산 왕궁리 정원의 곡수로와 석조원, 비폭원을 재현하였다. 구성요소 차용은 식재계획과 건축물을 비롯한 시설물 계획에서 이루어졌다. 이외 정원주변으로는 금동대향로와 산수문전에서 표현되는 대표적 경관인 신선계의 모습과 삼산오봉(三山五峰)형 봉우리, 산 사이 맑은 시냇물, 소나무 숲(송림(松林)) 경관을 형상화하였다. 본 연구의 의의는 먼저 백제정원이라는 주제 자체가 새로운 시도라는 것이다. 백제정원에 대한 선행연구와 실제적인 공간에 구현된 사례가 거의 없었기 때문이다. 둘째, 백제시대에 대한 심도 있는 고증을 토대로 백제정원을 개념적 차원뿐만 아니라 계획적 설계적 차원에서 적용 재현하고자 시도했다는 것이다. 전통의 적용이나 재현을 다루는 기존 연구가 사례 중심으로 분석과 평가에 치중해왔던 것과 차별성을 갖는다. 한계는 백제정원의 사실에 대한 선행 연구가 많지 않고, 현재 관련 유적에 대한 발굴 및 연구가 진행되고 있는 상태에서 진행된 연구이기 때문에 추후에 새로운 사실이 발견된다면 본 연구에서 제시한 재현에 대한 진정성의 문제와 다양한 대안이 제시되지 못했다는 한계를 드러낼 수 있다. 그러나 전통의 재현과 계승의 화두는 어느 시점에서의 완결성보다는 전통에 대한 새로운 해석과 시도가 요구되는 진행형이라는 측면에서 본 연구가 인정될 수 있을 것이다. 더불어 발굴된 유적을 그 자리에 '원형복원'하는 것이 아니라 리조트의 외부공간에 '재현'하다 보니 그 자체로 체험의 다양성과 완결성까지 부여되어야 한다는 어려움이 있었다.