Rapid Thermal Annealing 에 의한 Titanium Silicide 형성에 관한 연구

林秉洙 成均館大學校 科學技術硏究所 1988 論文集 Vol.39 No.1

The growth kinetics during the formation of Titanium silicide(TiSi_2) by Rapid Thermal Annealing (RTA) of Ti layer deposited on <100> single crystal silicon substrate has been investigated. The interfacial TiSi_2 layer grows as the sguare root of time, indicating that the silicide growth process is diffusion-limited. The activation energy of about 1.99±0.2 eV has been observed in the RTA temperature range of 750∼900℃. These results are in good agreement with the reported results of the conventional furnace annealing. It is conclcuded that the growth mechanism of TiSi_2 is the same for the furnace annealing and the rapid thermal annealing.

복숭아나무 揷穗의 크기와 저장양분의 發根과 圃場活着에 미치는 影響

林敬鎬,金炳三,黃仁澤,金月洙,金光秀,金相喆 全南大學校 農業科學技術硏究所 1998 農業科學技術硏究 Vol.33 No.-

복숭아나무 경지삽목 번식에 있어서 삽수 굵기와 길이 및 삽수내 저장 양분 함량이 발근과 포장활착에 미치는 영향을 구명하였다. 삽수 굵기는 直徑 5∼8㎜의 삽수가 발근율이나 발근수, 발근장 등 뿌리 발달이 좋았으나 포장 활착율은 삽수재 저장양분이 많은 직경 8∼11㎜가 좋았다. 삽수 길이는 20∼30㎝ 처리가 발근율, 발근수, 발근장 등 발근력이 좋았으나 포장 활착율은 삽수재 잔존 저장 양분이 많은 30㎝ 길이가 좋았다. 삽목용 적정삽수는 8㎜ 굵기에 30㎝ 길이가 가장 효과적이었으며 포장에서 활착후 묘고, 간경 등 생육은 모든 처리에서 116㎝ 이상, 20.4㎜ 이상으로 삽목 당년에 우량묘가 생산되었다. This experiment was studied to examine the effect of cutting size and storage nutrient on rooting and survival in field using hardwood cutting of 'Sunaga Wase' peach to establish mass production system of rooted cutting. Cuttings having 5 to 8㎜ in stem diameter showed the best rooting percentage, root number and root length. In the survival in field, the stem diameter of 8 to 11㎜ showed the highest survival rate and less consumption of storage nutrient during cutting. Those hardwood cuttings of 20 to 30㎝ in stem length showed the best rooting, and higher survival in field was obtained in 30㎝ long cuttings. After transplanting rooted cuttings to field, tree height and trunk diameter of 'Sunaga Wase' peach was 116㎝ and 20.4㎜, respectively.

복숭아 품종별 경지 삽목에 있어서 삽수기부의 Wounding이 발근 및 활착에 미치는 영향

林敬鎬,金炳三,金月洙,羅良基,鄭淳柱 전남대학교 농업과학기술연구소 2000 農業科學技術硏究 Vol.35 No.-

The effect of wounding method on rooting and field adaptation was studied in 'Sunaga Wase' peach and several cultivars in order to establish mass production system of rooted cutting. Rooting was more than 90% in 'Sunaga Wase', 'Kurakata wase', 'Wolbongjosaeng' and 'Wolmijosaeng', and Root number, weight and length showed similar tendency, however, taking root in field was the highest, as much as 75.8% 'in Sunaga Wase'. Modified wounding tool (MWT) was more effective than current method because rooted cutting with MWT showed high root growth including rooting, root number, root weight and saved wounding time.

Secondary Ion Mass Spectroscopy를 이용한 Palladium Silicide형성에 관한 연구

林秉洙 成均館大學校 科學技術硏究所 1983 論文集 Vol.34 No.2

In this paper, the results of the measurements made to characterize the solid state interaction during the formation of Pd_2Si film are presented. High purity palladium was sputter deposited in the thickness of 200 to 600nm on the cold [111] p-type Silicon single crystalline wafers to form thin Pd_2Si layers through the annealing treatment at 300℃ under the vacuum of 10^-6 torr. The analysis techniques includcd the following : X-ray determination of silicide formation, Auger Electron Spectroscopy(AES) during depth profiling to determine silicide location, Secondary Ion Mass Spectroscopy (SIMS) to find the extent of isotope seperation during silicide growth. As results, an epitaxial [001] Pd_2Si layer was found to follow the parabolic, (time)^+ type, growth behaviour with growth constant of 7.0 x 10 exp(-13) ㎠/sec at 300℃. Constant isotope seperation of Si atoms was observed in the Pd_2Si layer. From the results, it is concluded that the growth of Pd_2Si on the [111] Si single crystalline entails the lattice diffusion of Silicon atoms.

SM45C강의 Tempering 온도 변화에 따른 상온 및 300℃에서의 피로균열전파특성

장천수,김현철,임병수 成均館大學校 科學技術硏究所 1993 論文集 Vol.44 No.2

The effect of micros tructural and tempering temperature change on ΔK_th has been investigated at room temperature and 300℃ For the experiments, using SM4OC steel, specimens of different grain sizes, spacings between ΔK_th particles and tempering temperatures were prepared. Some of the conclusions obtained are as follows ; 1. ΔK_th values were greater at 300℃ when compared with those at room temperature and the crack growth rate decreased as test temperature increased. 2. ΔK_th was observed to increase with tempering temperature. However, ΔK_th value of 450℃ tempered specimen was very low, which is believed to be the result of Tempered Martensite Embrittlement(T.M.E.).

복숭아 단근처리가 화아분화와 과실품질에 미치는 영향

김병삼,임경호,나양기,김희곤,김월수 全南大學校 農業科學技術硏究所 2001 農業科學技術硏究 Vol.36 No.-

This study was carried out to investigate the effects of root pruning methods for tree vigor stability and flower bud differentiation of 'Sunaga Wase' peach. The treatment was one side 10㎝, 20㎝ and both sides 10㎝, 20㎝ depth under canopy in after summer pruning. Among the treatment, canopy volume was 0.26㎥ lower than non-treatment and flower bud differentiation and Fruit yield increased 18.8%, 9% on both sides root pruning 20㎝ depth, therefore suitability root pruning method of density peach tree was both sides root pruning 20㎝ depth.

STS 410 스테인레스강의 피로균열전파특성에 미치는 온도, 주파수 및 응력비의 영향

김현수,김현철,임병수 成均館大學校 科學技術硏究所 1994 論文集 Vol.45 No.1

The effects of temperature, stress ratio and frequency on the fatigue crack propagation have been investigated using STS 410 Stainless Steel. The temperatures employed were room temperature(27℃), 300℃ and 500℃. The stress ratios were 0.1 and 0.3 and the frequencies were 20 and 30Hz. Some of the conclusions obtained are as follows. (1) As the temperature increased, da/dN became greater, however, with the greater stress ratio, this tendency became smaller. (2) The change of frequency to a higher value at a given temperature had little effect on da/ dN. (3) The increase of stress ratio increased da/ dN, however, this effect became smaller at higher temperature.

專門大學海洋土木科模型敎育課程 修正開發硏究

李東周,林秉龍,張仁奎,申文燮,金榮燮,朴昌圭,金康洙 군산대학교 1988 群山水産專門大學 硏究報告 Vol.22 No.1

This is a study to modify the curriculum of the ocean civil engineering department in junior college. We collected and analyzed data which are concerned on the curriculum development or improvement, the marine techniques and the ocean policy. And then we also gathered the opinions of the professors serving at the ocean civil engineering department by holding several conferences and investigated the opinions of the ocean civil engineers serving at the industrial organization by way of the inquring papers. In addition we collected the advices of educational specialists and ocean civil specialists by visiting personally. On the basis of above opinions we developed the jobs of graduates and made a model curriculum shown in Table 6. We tried to intensify the subjects of special basic field related to the ocean & civil engineering and the subjects of basic experiment & practise. The ocean observation practise was newly formed and the E. D. P.S was reinforced.

P92강의 고온 특성

원성준,임병수 成均館大學校 科學技術硏究所 2001 論文集 Vol.52 No.2

In order to obtain higher efficiency and to reduce the amount of CO_2 exhausting from high temperature components, operating temperature and pressure have been raised recently. Such effort required the development of new high temperature materials, which have better high temperature properties. As the result, P92 steel is developed as a new high temperature piping material. In this study, the tensile properties and the fatigue crack growth rates of P92 steel were obtained at 600℃, 650℃ and 700℃ and the effects of temperature on high temperature characteristics were investigated using Base metal(As received), Base metal(As PWHT) and Weld metal.

AISI 4320 강과 AISI 4340 강의 Tempered Martensite Embrittlement 현상에 관한 연구

權寧逸,林秉洙 成均館大學校 科學技術硏究所 1987 論文集 Vol.38 No.1

The effect of carbon and austenitizing temperature on Tempered Martensite Embrittlement(TME) has been studied using AISI 4320 and AISI 4340 steels. Samples were austenitized at 870℃ and 1170℃ to change the austenite grain sizes and then oil quenched to obtain the martensite structure. Tempering was performed between 200℃ and 500℃ for 1 hour. The change of TME characteristics has been studied by the measurements of mechanical properties and the investigation of microstructures. Some of the conclusions obtained from the study are as follows; (1) As the austenitizing temperature increases, the tempering temperature where \4E occurs also increases. This is believed to be the effect of larger grain size and more homogeneous distribution of carbon at the higher austenitizing temperature. (2) The CVN impact energy values of the samples austenifized at the lower temperature were found to be higher than those of samples austenifized at the higher temperature, indicating the effect of the fine grain structure. (3) When TME occured, fracture was intergranular. This indicates that TME is associated with the combined effects of the cementite precipitation during the tempering process and the impurity segregation during the austenitizing treatment.