초록 ▼

유기는 한국의 전통금속 산업으로 높은 문화적 가치를 가지나 산업적 경쟁력이 낮음.
식기소재로서 녹이 쉽게 슬고 가격이 높아 대중화가 어려운 문제를 겪고 있음.
전통자원인 유기에 현대 과학기술을 활용하여 산업의 고도화가 필요함.
또한 유기의 전통기술을 기반으로 하는 신산업의 창출도 모색되어야 함.
전통유기에 대한 선행연구는 유물분석, 미세구조 재현과 공예상품화에 관한 연구들임.
유기의 문화적, 기술적 가치 평가를 통해 핵심가치로서 색상과 항균성을 도출하였음.
첨단과학기술과의 접목을 통해 산업적

유기는 한국의 전통금속 산업으로 높은 문화적 가치를 가지나 산업적 경쟁력이 낮음.
식기소재로서 녹이 쉽게 슬고 가격이 높아 대중화가 어려운 문제를 겪고 있음.
전통자원인 유기에 현대 과학기술을 활용하여 산업의 고도화가 필요함.
또한 유기의 전통기술을 기반으로 하는 신산업의 창출도 모색되어야 함.
전통유기에 대한 선행연구는 유물분석, 미세구조 재현과 공예상품화에 관한 연구들임.
유기의 문화적, 기술적 가치 평가를 통해 핵심가치로서 색상과 항균성을 도출하였음.
첨단과학기술과의 접목을 통해 산업적 가치를 높이기 위한 요소기술을 선정하였음.
한계돌파형 기술로 용해/주조기술, 열처리/가공기술, 내식성/내변색성의 평가기술을 활용하여 전통 유기산업의 고도화를 달성하는 것이 연구의 첫 번째 목표임.
와해성 원천기술인 금속-탄소 고용기술(covetics)의 개발과 활용을 통해 녹슬지 않는 유기를 개발하고 항균동으로서 신산업분야의 개척을 하는 것이 두 번째 목표임.
연구목표의 달성을 위한 연구수행 체계 및 사업화 전략도 제시하였음.


(출처 : 보고서 요약서 3P)

Abstract ▼

❏ Introduction
- This research project has been performed as a preliminary study to develop “anti-tarnishing Yuggi.”
- Research includes survey of technological status in international and domestic fields of relevance, literature and patent search and review, setting up the goal of research an

❏ Introduction
- This research project has been performed as a preliminary study to develop “anti-tarnishing Yuggi.”
- Research includes survey of technological status in international and domestic fields of relevance, literature and patent search and review, setting up the goal of research and technical development, detailed establishment of research milestone and assessment of economical impact and expected outcome of the research project.
- The background of this study is that traditional cultural industry in Korea is diminishing due to past history of Japanese colonial period followed by Korean War and unprecedented inflow of western culture. However, traditional culture industry has several strong potentials to flourish such as small but sustainable market share, suitable for custom-made products, increasing interest on traditional culture, reduced barrier for product sales through Internet.
- It is therefore necessary to examine the growth potential as an independent industry from the different perspectives and to realize the factors for traditional culture industry to become technologically competitive, independent sector of the modern society.
- Since skills of traditional cultural industry has been established by experience and passed down through generation by few individuals, it is worth evaluating and confirming the scientific value of traditionally inherited skills. Also, enhancement of competitiveness is required through standardization and quality control of the products. Furthermore, sophistication of industrial structure and evolving to new industry founded on science and technology is needed.
- Definition of Yuggi is traditional high tin bronze unique to Korea containing 22% of tin.
- This is regarded as a living tradition continuing for over 1500 years of Korean history.
- Yuggi takes its place as a part of Korean food culture with golden color metal chopsticks, dishes and rice bowl.
- Yuggi Industry is distributed throughout the nation and becomes the hub of economical growth of the local region.
- From the modern materials science and engineering viewpoint, in-depth research is needed to grow its value as one of the industrial materials.
- For the development of anti-tarnishing Yuggi, 4 particular technical fields are chosen as targets for the improvement, casting defect control, heat treatment and forming, corrosion resistance evaluation and metal-carbon alloying. Current technical level, problems, prior studies, patents are investigated for each technical fields to deduce research strategy and to suggest the objectives of main research project.

❏ Research Goals and Contents
- Yugi samples supplied from companies are characterized for casting defects, mechanical properties, corrosion resistance and tarnishing resistance.
- Residual oxygen in solidified Yuggi plate is high and causes defects in the final product.
- Coarse dendritic structure is found along with gas pores and oxide inclusions.
- Target for casting defect control is set to residual oxygen content down to 30 ppm and dentrite arm spacing less than 20 microns.
- Large scattering of strength and elongation exists in samples and caused by casting defects through fractographic examination.
- High temperature properties of γphase is measured for the first time and shows possibility to improve hot deformation behavior over conventional β phase forming.
- Evaluation methods for corrosion and tarnish resistance of Yuggi are compared and concluded that best quantitative and sensitive method is colormetry and EIS measurement.
- Objective for improving corrosion resistance of Yuggi is two-fold increase over current Yuggi performance. Tarnishing resistance should be less than ΔE = 5 for Yuggi development
- Dissolution of carbon and wetting of carbon fiber with molten aluminum under applied electric current is confirmed.
- Occurrence of carbon dissolution is proven by the experiment and the goal of Yuggi development project is to apply this technology to Yuggi alloy to improve the tarnishing resistance to exceptionally high level.

❏ Contents of Research Activity
- Data collection, analysis and preliminary experiments is done by internal research teams covering each particular technology.
- External consultation experts are utilized for patent map, technical discussion and market analysis.
- 3 meetings among internal research teams for checking progress and research direction
- 3 visits to 2 companies producing Yuggi with traditional techniques to discuss research directions, technical discussion and to get samples for testing.
- 6 consultations with traditional culture institutes and experts to explore the cultural value of Yuggi
- 6 visits and meetings with 5 companies producing copper and copper alloys to discuss the possibilities to participate in commercialization of semi-finished raw material for Yuggi.

❏ Expected Results and Application Plans
- Expansion of Yuggi market by providing anti-tarnishing, economical and anti-microbial dinnerware with golden color.
- Reevaluation of Yuggi as a traditional cultural heritage that public can use in daily living.
- Growth of Yuggi industry as sustainable regional business founded on modern technology.
- Widen its fields of application to advanced anti-microbial material with golden color for medical appliances, construction components and for personal hygiene.
- Application of metal-carbon alloying technology to copper and its alloys may lead to commercialization of highly added value industrial materials.
- Areas for possible commercialization are anti-microbial dinnerware, musical instruments, ornaments, cookware, and accessories requiring aesthetic appreciation.
- For anti-microbial functionality, it can be commercialized as wall switches, water faucets, handlebars and all applications where contacts by people are frequent and repetitive.
- Heat exchanger, heat dissipation parts, high strength power line from copper-carbon alloy ensuring hugh derivative market for copper and copper alloys.
- Currently domestic market size for dinnerware Yuggi is about 30 billion Won and is expected to enlarged to 100 billon won by ‘25 from anti-tarnishing Yuggi.
- Two-fold increase of market for bronze bells, statues and bronze craft through improvement of yuggi casting technology
- Market size for anti-microbial materials is estimated to be 3.2 trillion Won by ‘18.
- Domestic market will be about 380 billon Won assuming 20% of hospital rooms use anti-microbial copper.
- Global market size may be estimated to be 3.5 trillion Won if 20% of hospital rooms in OECD nations employ anti-microbial copper.
- Derivative market of electric copper is 7.2 trillion Won that can be entered with copper-carbon alloying technology.


(출처 : SUMMARY 8P)

목차 Contents

• 표지 ... 1
• 제 출 문 ... 2
• 보고서 요약서 ... 3
• 요 약 문 ... 4
• SUMMARY ... 8
• CONTENTS ... 12
• 목차 ... 13
• 제 1 장 先기획연구 개요 ... 15
• 제 1 절 先기획연구의 목적, 필요성 및 범위 ... 15
• 1. 先기획연구의 배경 ... 15
• 2. 先기획연구의 목적 ... 15
• 3. 先기획연구의 필요성 ... 16
• 4. 先기획연구의 범위 ... 17
• 제 2 절 대상 소재기술의 정의 및 개념 ... 17
• 1. 대상 소재기술의 정의 ... 17
• 2. 대상 기술의 개념 ... 18
• 제 2 장 기술개발 현황 및 조사․분석 ... 66
• 제 1 절 국내․외 기술개발 현황 ... 66
• 1. 주조결함 제어기술 ... 66
• 2. 열처리 가공기술 ... 69
• 3. 내식성 평가기술 ... 70
• 4. 금속-탄소 고용기술 ... 75
• 제 2 절 선행 연구 조사․분석 및 시사점 ... 77
• 1. 주조결함 제어기술 ... 77
• 2. 열처리 가공기술 ... 80
• 3. 내식성 평가기술 ... 81
• 4. 금속-탄소 고용기술 ... 83
• 제 3 장 기술개발 목표 및 내용 ... 91
• 제 1 절 연구개발내용 및 범위 ... 91
• 1. 주조결함 제어기술 ... 91
• 2. 열처리 가공기술 ... 92
• 3. 내식성 평가기술 ... 93
• 4. 금속-탄소 고용기술 ... 93
• 제 2 절 기존 기술과의 차별성 및 원천성 ... 94
• 제 3 절 先연구내용 및 결과 ... 96
• 1. 주조결함 제어기술 ... 96
• 2. 열처리 가공기술 ... 108
• 3. 내식성 평가기술 ... 121
• 4. 금속-탄소 고용기술 ... 126
• 5. 유기합금의 미세조직 분석과 제어 ... 128
• 6. 유기소재의 문화적 가치의 발굴 및 활용 ... 135
• 제 4 장 先기획연구 활동 추진 내용 ... 140
• 제 1 절 先기획연구 추진 체계 ... 140
• 1. 기획 연구팀 구성 및 추진체계 ... 140
• 제 2 절 先기획연구 방법론 ... 141
• 제 3 절 先기획연구 활동 내용 ... 142
• 1. 기획위원회 활동 ... 142
• 2. 유기업체 방문 및 의견 수렴 ... 143
• 3. 유기 관련 문화자원 수집 ... 143
• 4. 산업체 기술협의 ... 144
• 제 5 장 기대성과 및 활용 계획 ... 146
• 제 1 절 기대성과 ... 146
• 제 2 절 상용화 예상 분야 ... 148
• 제 3 절 경제성 분석 ... 148
• 제 6 장 참고문헌 ... 152
• 부록 ... 159
• 부록 1. 청동수저 유물들의 분석 결과를 통해본 유기의 시원과 발전 과정 ... 159
• 부록 2. 청동기 유물과 합금의 국제 연구기관과 연구 결과 요약 ... 161
• 부록 3. 유기산업체 설문조사 항목 ... 165
• 부록 4. 구리-주석 이원계 합금의 상태도와 결정 상의 정보 ... 166
• 부록 5. 유기와 관련된 학위 논문 목록 ... 169
• 부록 6. 구리-주석 합금의 특허조사 방법과 특허 목록 ... 170
• 부록 7. 유기소재의 응력-변형율 곡선 ... 172
• 부록 8. 유기의 문화적 가치와 디자인의 예 ... 176
• 끝페이지 ... 192