ScienceON 검색
ScienceON '특허' 검색
더보기| No | 제목 / 내용 |
|---|---|
| 1 |
ALUMINUM ALLOY PISTON EXCELLENT IN HIGH TEMPERATURE FATIGUE STRENGTH AND WEAR RESISTANCE, AND ITS MANUFACTURE / NIPPON LIGHT METAL CO LTD PROBLEM TO BE SOLVED: To provide an aluminum alloy piston exhibiting excellent fatigue strength even in a temperature region as high as 200 to 250°C. SOLUTION: After forging, this aluminum alloy piston has a composition containing 11-13% Si, 0.2-1.2% Fe, 3.5-4.5% Cu, 0.2-0.5% Mn, 0.3-1.0% Mg, 0.01-0.2% Ti, 0.0002-0.02% B, 0.005-0.02%s P, and Ca in an amount controlled to ≤0.005%. The aluminum alloy piston has a forged structure in which Si and an intermetallic compound both crystallized out at the time of casting are uniformly dispersed, in 5-35 μm average grain size, in a matrix after forging and gas content is controlled to ≤0.25 cc/100 g-Al. Further, the average number of inclusions is controlled to ≤0.01 piece/cm2 by K10 value in a stage of an ingot, and forming is performed by forging. |
| 2 |
MERCURY RARE GAS DISCHARGE LAMP FOR COMPACT MIRROR PROJECTION / USHIO INC (PURPOSE) To stabilize the position of an arc spot by setting the sealed quantity of mercury into a light emitting tube to a specific value 1-10atm, providing a flat face at the tip of a cathode, and setting the area of the flat face to a specific value. (CONSTITUTION) The sealed quantity of mercury into a light emitting tube 10 is set to 13-30mg for the inner volume 1cc of the tube 10. The rare gas sealed quantity into the tube 10 is set to 1-10atm at the room temperature. The radiation quantity in the region on the short-wavelength side is increased. A flat face 31 is provided at the tip of a cathode 30, and the area of the flat face 31 is set to 0.005-0.01cm2 . When the area of the flat face is made smaller than 0.005cm2 , an arc spot is increased, and it is difficult to shrink the radiation light with high intensity. When the area is made larger than 0.01cm2 , the position of the arc spot is made unstable, and precise exposure is made difficult. |
| 3 |
OXIDE MAGNETIC MATERIAL / NEC TOKIN CORP PROBLEM TO BE SOLVED: To provide an oxide magnetic material having high saturation magnetic flux density and high permeability in which increase in core loss is suppressed in the range of room temperature to 140°C or at high temperature of 100°C or above by containing CuO as a principal component.SOLUTION: Low loss is ensured up to high frequency near several hundreds kHz by setting the density of sintered body at 4.95 g/cc or above and the crystal grain sizes in the range of 10-15 μm in an oxide magnetic material comprising 52.0-56.0 mol% of iron oxide in terms of Fe2O3, 8.0-13.0 mol% of zinc oxide in terms of ZnO, 0-5.0 mol% (0 is excluded) of copper oxide in terms CuO, as principal components, and the remainder of manganese oxide (MnO), and 0.005-0.05 wt.% of silicon oxide in terms of SiO2, 0.01-0.1 wt.% of calcium oxide in terms of CaO, 0.01-0.5 wt.% of niobium oxide in terms of Nb2O5, and 0.01-0.5 wt.% of cobalt oxide in terms of CoO, as secondary components. |
ScienceON '논문' 검색
더보기ScienceON '보고서' 검색
더보기| No | 제목 / 내용 |
|---|---|
| 1 |
유아 교육시설에서 건강보호를 위한 유해인자평가와 보건소용 관리지침 개발 박두용 , 대구가톨릭대학교 , 2003 |
| 2 |
백신 자동 접종시스템 개발 및 실용화 이동길 , 국립수산과학원 , 2014 |