경강선의 평압가공성에 미치는 조직과 가공의 영향에 대한 연구

이인섭,김동훈,김원태 대한금속재료학회(대한금속학회) 1984 대한금속·재료학회지 Vol.22 No.5

Microstructure analysis and tensile test were performed to study the effects of microstructure and drawing on the flat rolling of high carbon steel wires. Critical reduction ratio in flat rolling increases due to the developed fibrous microstructure as drawing ratio increases, and is roughly proportional to the area reduction ratio in tensile test. Edge crack is formed at the angle of 45 degree to the rolling direction due to tensile stress. Critical width to thickness ratio of Stelmor treated wire is superior to that of the lead patenting treated wire. Sorbite created in the lead patenting treatment is considered to be deterious to flat rolling of wire.

아세안 국가의 산업안전보건체제 증진 및 발전방향

이인섭 한국정책학회 2013 한국정책학회 추계학술발표논문집 Vol.2013 No.-

이집트 유목문화에 나타난 성과 속 연구

이인섭 한국외국어대학교(글로벌캠퍼스) 중동연구소 2007 중동연구 Vol.26 No.1

A Study on the Nomadic Culture in Egyptbetwen Sacredness and SecularityLe, In-SeopHUFSThis tudy is to investigate the sacrednes and secularity이 논문은 년 정부 교육인적자원부 의 재원으로 한국학술진흥재단의* 205 ( )지원을 받아 수행된 연구임(KRF-205-079-AS0146)한국외국어대학교 통번역대학원 한아과 부교수 *74 중동연구 제 권 호26 1features in the nomadic ulture in Egypt.This tudy is the first year's result of the thre-year proje ctsuported by Korea Research Foundation under the title of "AStudy on the Arab's Way of Thinking through the UnderlyingCultural Data Writen in Arabic: Colapse of the Boundarybetwen Sacrednes and Secularity". So, This tudy starts w iththe underlying cultural data writen in Arabic, not by thefieldwork or survey in Egypt.This tudy includes Egyptian omadic haracteristics andconsciousnes in the colors, gretings, an optative xpres sions.It includes also Egyptians' senses of tabos, sexualdiscrimination, and some features of animism in their everydaylife such as 'bidah' in Arabic (which means 'mixed formbetwen religion and animism'), sacrificial ofering, env iouseye(ayn al- sd, ayn al- sid, ayn sharrah), fivefingers(amsah, amsah), jar-breaking for escape frommisfortune, some ways of driving away devils(ifrt) byincantation and amulet, saint worship, etc.As a result, the study was able to introduce the Egyptiannomad's way of thinking mixed with Islam, Coptic Christianityand folk, because the belief in the supernatural power could notbe xcluded from primitive human being not even in Egypt, butin Korea lso.

The effect of processing temperature and time on the surface properties of plasmaradical nitrided SKD61 steel

이인섭,박익민 한양대학교 세라믹연구소 2006 Journal of Ceramic Processing Research Vol.7 No.2

Plasma-radical nitriding was performed to harden the surface of SKD 61 steel for 1-10 hours at a temperature range of 450- 550oC. This process involved the use of NH3 gas instead of N2 gas which is employed for the well-established plasma-nitriding method. An NH radical, which played a key role to produce a nitrogen diffusion layer without the formation of the brittle compound layer, was generated in a gas mixture of NH3 and H2. One of the main advantages of the plasma-radical nitriding is to improve the surface hardness by maintaining the roughness of the initial polished surface. The microstructures and material properties of the radical- nitrided layer were characterized in order to investigate the effects of various radicalnitriding processing parameters. In addtion, radical nitriding produces better surface roughness, compared with conventional ion nitriding.

Influence of Temperature and Time on Low-Temperature Plasma Nitrocarburizing of AISI 304L Austenitic Stainless Steel

이인섭 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.54 No.3

The major drive for the applications of low-temperature plasma treatment in nitrocarburizing of austenitic stainless steels lies in improved surface hardness without degraded corrosion resistance. The low-temperature plasma nitrocarburizing was performed in a gas mixture of N2, H2 and a carbon-containing gas such as CH4. The in uence of the processing temperature (380-430℃) and time (4-20 h) on the surface properties of the nitrocarburized layer was investigated. The resultant nitrocarburized layer was a dual-layer structure, which was comprised of a N-enriched layer (γN) with a high nitrogen content on top of a C-enriched layer (γC) with a high carbon content, leading to a significant increase in surface hardness and corrosion resistance. Chromium nitride was formed in the N-enriched layer only for the specimen treated at 430℃. The surface hardness and the layer thickness increased up to about 1200 HV0.01 and 15μm with increasing temperature and time, respectively. No loss in corrosion resistance was observed, except for the specimen treated at 430℃. The major drive for the applications of low-temperature plasma treatment in nitrocarburizing of austenitic stainless steels lies in improved surface hardness without degraded corrosion resistance. The low-temperature plasma nitrocarburizing was performed in a gas mixture of N2, H2 and a carbon-containing gas such as CH4. The in uence of the processing temperature (380-430℃) and time (4-20 h) on the surface properties of the nitrocarburized layer was investigated. The resultant nitrocarburized layer was a dual-layer structure, which was comprised of a N-enriched layer (γN) with a high nitrogen content on top of a C-enriched layer (γC) with a high carbon content, leading to a significant increase in surface hardness and corrosion resistance. Chromium nitride was formed in the N-enriched layer only for the specimen treated at 430℃. The surface hardness and the layer thickness increased up to about 1200 HV0.01 and 15μm with increasing temperature and time, respectively. No loss in corrosion resistance was observed, except for the specimen treated at 430℃.

Development of Plasma Nitrocarburizing and Post-Oxidation Technology for the Replacement of Cr 6+ Plating for Application to Vehicle Engine Shafts

이인섭 대한금속·재료학회 2008 METALS AND MATERIALS International Vol.14 No.1

Plasma nitrocarburizing and post-oxidation treatments were performed to improve the wear and corrosion resistance of S45C steel. Plasma nitrocarburizing was conducted for 3 h at 57℃ in a nitrogen, hydrogen and methane atmosphere to produce the ε-Fe2-3(N,C) phase. It was found that the compound layer produced by plasma nitrocarburising was predominantly composed of the ε-phase with traces of the γ′-Fe₄(N,C) phase. The thickness of the compound layer was approximately 12 μm and the diffusion layer was approximately 300 μm in thickness. Plasma post oxidation was performed on nitrocarburized samples with various oxygen / hydrogen ratios at a constant temperature of 500℃ for 1 h. The very thin magnetite (Fe₃O₄) layer 1 μm to 2 μm in thickness on top of the compound layer was obtained by plasma post oxidation. It was also confirmed that further improvement of the corrosion characteristics of the nitrocarburized compound layer was possible with an application of the superficial magnetite layer. Finally, throttle valve shafts of S45C steel were treated under optimum plasma processing conditions. Accelerated life time test results using a throttle body assembled with a shaft treated by plasma nitrocarburising and post oxidation showed that plasma nitrocarburizing and plasma post-oxidation processes could be a viable technology in the very near future in place of Cr6+ plating.

크론병 치루 및 농양의 수술 후 경과

이인섭,최은경,박성찬,박규주 대한대장항문학회 2007 Annals of Coloproctolgy Vol.23 No.6

부산?경남 지역에서 수집된 재래종 찰옥수수의 과피 두께에 대한 고찰

이인섭,김순임 한국생명과학회 2007 생명과학회지 Vol.17 No.2

To get abundant germplasm for developing new waxy corn varieties, pericarp thickness was measured and other factors were evaluated with a total of 142 Korean local waxy corn lines collected from various parts of Busan City and Gyungnam Province. The average pericarp thickness of Korean local waxy corn lines collected was 40.61 ㎛ and the rate of thin pericarp under 50 ㎛ was 70.4%. The pericarp thickness compared by the regions collected showed non significant difference, but which compared by the ear row number per ear showed significant difference (MS = 597.52*). Correlation between pericarp thickness and row numbers per ear was low (-0.93).

부산.경남 지역에서 수집된 재래종 찰옥수수의 과피 두께에 대한 고찰

이인섭,김순임,Lee, In-Sup,Kim, Soon-Im 한국생명과학회 2007 생명과학회지 Vol.17 No.1

To get abundant germplasm for developing new waxy corn varieties, pericarp thickness was measured and other factors were evaluated with a total of 142 Korean local waxy corn lines collected from various parts of Busan City and Gyungnam Province. The average pericarp thickness of Korean local waxy corn lines collected was $40.61{\mu}m$ and the rate of thin pericarp under $50{\mu}m$ was 70.4%. The pericarp thickness compared by the regions collected showed non significant difference, but which compared by the ear row number per ear showed significant difference $(MS=597.52^*)$. Correlation between pericarp thickness and row numbers per ear was low (-0.93).

연구보고서 소개 - 생물학적 인자 측정 및 평가방법 연구(I)

이인섭,Lee, In-Seop 대한산업보건협회 2010 산업보건 Vol.265 No.-