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홍순직(Hong, Soon Jick) 국민대학교 한반도미래연구원 2019 한반도미래연구 Vol.3 No.1
비무장지대(DMZ)를 포함한 접경지역은 생물 다양성과 희귀 동식물 보전 등 생태계의 보고인 동시에, 분단의 아픔을 간직하고 있는 대립과 갈등의 상징적 장소이기도 하다. 이러한 특성으로 이 지역은 생태⋅평화적 가치 증가 및 보존⋅복원에 대한 요구와 제안들이 꾸준히 이어져 왔으나, 개발이 제한되어 여전히 낙후되어있다. 그러나 문재인 정부 들어 3 차례의 남북정상회담, 한반도 신경제구상에서의 ‘접경지역 평화경제벨트’ 채택, 그리고 2019년 9월 UN연설에서의 ‘DMZ 국제평화지대화’ 제안 등으로 이 지역 개발에 대한 관심과 가능성이 커졌다. DMZ⋅접경지역 개발은 분단과 갈등, 냉전을 상징하는 장벽(Wall)에서 벗어나 두 동강 난 남북한의 허리를 하나(Onekorea)로 연결하고 한국경제의 신성장 동력 발굴과 경제통일 실현, 나아가 한반도를 동북아의 거점(Hub)으로 발전시키는 새로운 기회의 창(Window)을 제공함으로써 남북한 상생(WinWin)의 터전이 될 것이다. 또한 이의 평화적⋅경제적 이용은 남북한 경제적 측면 외에 정치⋅군사⋅사회문화적으로도 큰 의미와 유무형의 효과를 가져다줄 것이다. 본고에서는 경제적 측면을 중심으로 DMZ의 평화적 이용에 대한 국가적 의미와 추진방안을 살펴보고자 한다. 이를 위해 먼저 DMZ 개발의 의미와 중요성, 필요성과 함께, 주요국의 접경지역 및 평화공원 개발 사례를 살펴보았다. 주요 사업별 단계적 추진방안 제시와 함께, 자금 조달방안도 간단히 점검해보았다. Border area including the demilitarized zone(DMZ) is a repository of ecosystems that preserves the biodiversity and protects endangered species, but on the other hand, it is a symbolic place of antagonism and conflict from the separation of two Koreas. There have been continuous requests and suggestions made for the restoration of biospheric and peaceful value but the area is still left undeveloped due to restrictions. However, during the Moon Jae-In administration, three North-South Korean summits, ‘peace economic belt construction in the border area’ as part of the Korean peninsula New Economic Initiative, and the proposal for an ‘international peace zone’ at the DMZ made in the UN speech in September 2019 brought much attention and possibilities of this area’s development. The development of the DMZ·border area, if possible, would remove the wall that symbolizes separation, conflict, and cold war and connect the broken Koreas into One-Korea. It would provide a new window of opportunity to discover a power of Korea’s economy and realize economic unification and to develop the Korean peninsula into a hub of economic cooperation in Northeast Asia, so that it becomes the ‘win-win place’ for both South and North Koreas. Moreover, the peaceful and economic utilization would bring a significant meaning in terms of political, military, and sociocultural aspects as well as economic aspect. In this paper, the national significance of the DMZ’s peaceful utilization and the progression plan are discussed from economic perspective. First, the paper addresses the significance of the DMZ development and the case-study of the border area and peace park in neighbor countries. Then the paper introduces a step-by-step plan by major projects and funding plans.
급속응고 Al-20 wt% Si 합금분말 압출재의 ECAP
윤승채,홍순직,서민홍,팜쾅,김형섭,Yoon, Seung-Chae,Hong, Soon-Jik,Seo, Min-Hong,Quang, Pham,Kim, Hyoung-Seop 한국분말야금학회 2004 한국분말재료학회지 (KPMI) Vol.11 No.2
In this paper processing and mechanical properties of Al-20 wt% Si alloy was studied. A bulk form of Al-20Si alloy was prepared by gas atomizing powders having the powder size of 106-145 ${\mu}m$ and powder extrusion. The powder extrudate was subsequently equal channel angular pressed up to 8 passes in order to refine grain and Si particle. The microstructure of the gas atomized powders, powder extrudates and equal channel angular pressed samples were investigated using a scanning electron microscope and X-ray diffraction. The mechanical properties of the bulk sample were measured by compressive tests and a micro Victors hardness test. Equal channel angular pressing was found to be effective in matrix grain and Si particle refinement, which enhanced the strength and hardness of the Al-2OSi alloy without deteriorating ductility in the range of experimental strain of 30%.
방전 플라즈마 소결법(SPS)으로 제조된 급속응고 p-type Bi<sub>2</sub>Te<sub>3</sub> 합금의 소결 특성
문철동,홍순직,김도향,김택수,Moon, Chul-Dong,Hong, Soon-Jik,Kim, Do-Hyang,Kim, Taek-Soo 한국분말야금학회 2010 한국분말재료학회지 (KPMI) Vol.17 No.6
The p-type thermoelectric compounds of $Bi_2Te_3$ based doped with 3wt% Te were fabricated by a combination of rapid solidification and spark plasma sintering (SPS) process. The effect of holding time during spark plasma sintering (SPS) on the microstructure and thermoelectric properties were investigated using scanning electron microscope (SEM), X-ray diffraction (XRD) and thermoelectric properties. The powders as solidified consisted of homogeneous thermoelectric phases. The thermoelectric figure of merit measured to be maximum ($3.41{\times}10^{-3}/K$) at the SPS temperature of $430^{\circ}C$.
자기펄스성형법 및 통전가압소결법의 연속공정을 이용한 고밀도 나노 알루미나 세라믹의 제조
이종극,홍순직,이민구,이창규,Lee, J. K.,Hong, S. J.,Lee, M. K.,Rhee, C. K. 한국분말야금학회 2005 한국분말재료학회지 (KPMI) Vol.12 No.5
In this study the nanostructured ${\alpha}-Al_{2}O_3$ ceramics have been fabricated by the combined application of magnetic pulsed compaction (MPC) and subsequent spark plasma sintering (SPS), and their density and hardness properties were investigated. The ${\alpha}-Al_{2}O_3$ prepared by the combined processes showed an increase by $8.4\%$ in density, approaching the value close to the true density, and an enhancement by $210\~400\;Hv$ in hardness, compared to those fabricated by MPC or static compaction method followed by sintering treatment.
P형 Fe(Mn)Si<sub>2</sub> 열전재료 분말의 성형 및 미세조직
심재식,홍순직,천병선,Shim, J.S.,Hong, S.J.,Chun, B.S. 한국분말야금학회 2008 한국분말재료학회지 (KPMI) Vol.15 No.5
The effects of the dopant (Mn) ratio on the microstructure and thermoelectric properties of $FeSi_2$ alloy were studied in this research. The alloy was fabricated by a combination process of ball milling and high pressure pressing. Structural behavior of the sintered bulks were systematically investigated by XRD, SEM, and optical microscopy. With increasing dopan (Mn) ratio, the density and ${\varepsilon}-FeSi$ phase of the sintered bulks increased and maximum density of 94% was obtained in the 0.07% Mn-doped alloy. The sintered bulks showed fine microstructure of ${\alpha}-Fe_{2}Si_{5}$, ${\varepsilon}-FeSi$ and ${\beta}-FeSi_2$ phase. The semiconducting phase of ${\beta}-FeSi_2$ was transformed from ${\alpha}-Fe_{2}Si_{5}+{\varepsilon}-FeSi$ phase by annealing.
기계적 합금화 공정에 의한 Fe가 코팅된 Mg 탈황 분말 제조 연구
송준우,천병선,홍순직,Song, Joon-Woo,Guillermo, Otaduy,Chun, Byong-Sun,Hong, Soon-Jik 한국분말야금학회 2012 한국분말재료학회지 (KPMI) Vol.19 No.3
In this research, the coating behavior of Mg and Fe desulfurization powder fabricated by low energy and conventional planetary mill equipment was investigated as a function of milling time, which produces uniform Fe coated powders due to milling energy. Since high energy ball milling results in breaking the Fe coated Mg powders into coarse particles, low energy ball milling was considered appropriate for this study, and can be implemented in desulfurization industry widely. XRD and FE-SEM analyses were carried out to investigate the microstructure and distribution of the coating material. The thickness of the Fe coating layer reaches a maximum of 14 ${\mu}m$ at 20 milling hours. The BCC structures of Fe particles are deformed due to the slip system of Fe coated Mg particles.
분말야금법으로 제조된 FeSi<sub>2</sub> 열전특성 화합물의 열처리 시간에 따른 미세조직과 상변화
박경태,신진교,홍순직,천병선,Park, Kyoung-Tae,Shin, Jin-Gyo,Hong, Soon-Jik,Chun, Byong-Sun 한국분말야금학회 2010 한국분말재료학회지 (KPMI) Vol.17 No.6
In this study, $FeSi_2$ as high temperature performance capable thermoelectric materials was manufactured by powder metallurgy.The as-casted Fe-Si alloy was annealed for homogenization below $1200^{\circ}C$ for 3 h. Due to its high brittleness, the cast alloy transformed to fine powders by ball-milling, followed by subsequent compaction (hydraulic pressure; 2 GPa) and sintering ($1200^{\circ}C$, 12 h). In order to precipitate ${\beta}-FeSi_2$, heat treatment was performed at $850^{\circ}C$ with varying dwell time (7, 15 and 55 h). As a result of this experiment thermoelectric phase ${\beta}-FeSi_2$ was quickly transformed by powder metallurgical process. There was not much change in powder factor between 7h and 55h specimens.