公开(公告)号：KR1020120009912A

公开(公告)日：2012-02-02

申请号：KR1020100071006

申请日：2010-07-22

Applicant: 한국에너지기술연구원

Inventor： 한인섭 ,  우상국 ,  김세영 ,  서두원 ,  홍기석 ,  유지행 ,  이기성

IPC: D06M11/74 ,  D06M11/67 ,  D06M14/36 ,  D06C7/00 ,  D06M101/40

CPC classification number: D06M11/74 ,  D06C7/00 ,  D06M11/67 ,  D06M14/36 ,  D06M2101/40 ,  D10B2101/12 ,  D10B2401/06

Abstract: PURPOSE: A fiber reinforced composite containing a reinforcing fiber with a dual coated layer is provided to ensure deformation resistance and mechanical strength. CONSTITUTION: A fiber reinforced composite has a reinforcing fiber. The reinforcing fiber has a dual coated layer of pyrolytic coated layer and boron nitride coated layer. The dual coated layer is formed on the surface of the reinforcing fiber. A silicon carbide fiber is woven in a plain weave. The silicon carbide fiber is woven from a fiber containing 50 wt% of Si, 30 wt% C, 18 wt% of O, and 2 wt% of Ti.

Abstract translation: 目的：提供含有双层涂层的增强纤维的纤维增强复合材料，以确保抗变形性和机械强度。 构成：纤维增强复合材料具有增强纤维。 增强纤维具有热解涂层和氮化硼涂层的双重涂层。 双层涂层形成在增强纤维的表面上。 碳化硅纤维以平纹编织。 碳化硅纤维由含有50重量％Si，30重量％C，18重量％O和2重量％Ti的纤维编织而成。

公开(公告)号：KR100525839B1

公开(公告)日：2005-11-03

申请号：KR1020030044110

申请日：2003-07-01

Applicant: 한국에너지기술연구원

Inventor： 이기성 ,  우상국 ,  서두원 ,  한인섭 ,  홍기석 ,  배강

IPC: H01M4/86

Abstract: 본 발명은, 고체산화물 연료전지용 고강도 음극 지지체 제조방법에 관한 것이다.
이는 특히, 고온 연료전지용 고강도 음극지지체의 제조방법에 있어서, 몰비로 10%의 이트리아로 안정화된 지르코니아가 45∼65vol% 첨가되며, 니켈옥사이드 분말 35∼55vol%가 첨가된 혼합분말에 30∼45vol%의 기공형성제로써 활성탄 혹은 카본블랙의 탄소분말이 첨가되는 단계와, 성형보조제로써 1∼15wt%의 결합제, 1∼5wt%의 분산제, 1∼10wt%의 가소제, 1∼3wt%의 이형제와 함께 가압성형, 압출성형, 혹은 태잎 성형하여 평판형 또는 원통형으로 성형하는 단계와, 성형보조제를 제거한 후 가열에 의해 소결하는 단계를 포함하는 구성으로 이루어 진다.
이에따라서, 기공율과 전기전도도가 고온 연료전지의 음극으로 사용되는데 있어서 우수하면서도 특히 강도가 높은 고강도 음극지지체를 제조하는 방법이 제공된다.

公开(公告)号：KR100419778B1

公开(公告)日：2004-02-21

申请号：KR1020010007749

申请日：2001-02-16

Applicant: 한국에너지기술연구원

Inventor： 우상국 ,  한인섭 ,  이기성 ,  서두원 ,  홍기석 ,  배강 ,  임광현 ,  임병훈

IPC: C04B35/573

Abstract: PURPOSE: A method for manufacturing silicon carbide-boron carbide composites by liquid phase reaction sintering is provided which can compensate strength/hardness reduction due to free silicone in silicon carbide-boron carbide composite produced by liquid phase reaction sintering. CONSTITUTION: The manufacturing method of silicon carbide-boron carbide composites by liquid phase reaction sintering includes the steps of (i) adding 5-40 wt.% of boron carbide(B4C) to an admixture comprising 80-95 wt.% silicon carbide and 5-20 wt.% carbon powder followed by mixing, wherein the silicon carbide is composed of coarse particle and fine particle in a ratio of 7:3, and the carbon powder is carbon black having mean particle size of less than 1μm; (ii) adding 1-2 wt.% of organic binder to the mixture obtained in the first step followed by granulating above mixture with a sieve having 50-100 mesh size; (iii) pressing the granulated mixture by uniaxial pressing at 300-500Kg/cm¬2; and (iv) sintering process. The sintering process is characterized in that above formed mixture is heated up to 600 deg.C at a temperature rising rate of 1 to 2 deg.C/min under decompressed atmosphere of 10¬-1 to 10¬-2 torr and then holding the temperature for 1 hour; sequentially it is heated to temperature ranges of 1,550 to 1,600°C at a temperature rising rate of 5 deg.C/min and then holding the temperature for a certain period of time; and finally it is heated up to 1,700°C.

Abstract translation: 目的：提供一种通过液相反应烧结制造碳化硅 - 碳化硼复合材料的方法，其可以补偿由液相反应烧结制备的碳化硅 - 碳化硼复合材料中由游离硅氧烷引起的强度/硬度降低。 构成：通过液相反应烧结的碳化硅 - 碳化硼复合材料的制造方法包括以下步骤：（i）将5-40重量％的碳化硼（B 4 C）加入到包含80-95重量％的碳化硅和 5-20重量％的碳粉，然后混合，其中碳化硅由粗颗粒和细颗粒以7:3的比例组成，碳粉是平均粒径小于1μm的炭黑; 米; （ii）将1-2重量％的有机粘合剂加入到第一步获得的混合物中，随后用50-100目尺寸的筛将上述混合物造粒; （iii）通过在300-500Kg / cm 2和2下单轴压制造粒的混合物; 和（iv）烧结过程。 该烧结过程的特征在于，在减压10〜10℃〜2乇的气氛中，将上述形成的混合物以1〜2℃/分钟的升温速度升温至600℃后， 温度1小时; 依次以5℃/分钟的升温速度将其加热至1550至1600℃的温度范围，然后保持该温度一段时间; 最后加热到1700℃。

公开(公告)号：KR1020020089736A

公开(公告)日：2002-11-30

申请号：KR1020010028572

申请日：2001-05-24

Applicant: 한국에너지기술연구원

Inventor： 우상국 ,  홍기석 ,  배강 ,  한인섭 ,  이기성 ,  서두원 ,  금시환

IPC: F28F1/40

Abstract: PURPOSE: A high efficiency heat exchanger using helical inner tube is provided to collect high temperature waste heat so as to reuse. CONSTITUTION: An inner tube is made of ceramic material, formed with an upper tube(21) and a lower tube(21') separating each other and inserted into a heat transfer pipe(11) and has a periphery spirally grooved. The heat transfer pipe is installed to air inlet side header blocks(41,41') and air outlet side header blocks(42,42') and installed to the air inlet side with a fixing flange and coupling bolts so that air flows therein through an inside and an outside of the inner tube simultaneously.

Abstract translation: 目的：提供使用螺旋内管的高效热交换器来收集高温余热以便重新使用。 构成：内管由陶瓷材料制成，形成有彼此分离并插入传热管（11）中的上管（21）和下管（21'），并具有螺旋状的外周。 传热管安装在空气入口侧集管块（41,41'）和空气出口侧集管块（42,42'）上，并通过固定法兰和联接螺栓安装到空气入口侧，使空气流过其中 同时内管内外。

公开(公告)号：KR1020020069051A

公开(公告)日：2002-08-29

申请号：KR1020010009362

申请日：2001-02-23

Applicant: 한국에너지기술연구원

Inventor： 우상국 ,  박영옥 ,  한인섭 ,  서두원 ,  이기성 ,  홍기석 ,  배강 ,  이상훈

IPC: B01D39/20

CPC classification number: B01D39/2075 ,  B01D2239/10 ,  C04B35/565 ,  C04B35/64

Abstract: PURPOSE: A silicon carbide ceramics filter for dust collection is provided, which has high strength with the addition of alkali metal and alkali earth metal. CONSTITUTION: The fabrication method of silicon carbide ceramics filter includes the steps of mixing silicon carbide ceramics powder 100 wt.%, 1.0 to 15.0 wt.% of sintering aid (clay), 1.0 to 5.0 wt.% of forming auxiliary agent, 0.1 to 5.0 wt.% of alkali metal compound, 0.5 to 5.0 wt.% of dispersant, and 5 to 15.0 wt.% of water; aging the mixture; pressure extruding the mixture in the form of filter at 100 to 800 kg/cm¬2; and sintering the filter. The sintering process includes the steps of heating the ceramic filter up to 800°C at temperature elevation rate of 1.5 °C/min; holding it at 800°C for 6 hours; heating the ceramic filter up to 1400°C at temperature elevation rate of 4°C/min; and holding it 1400°C for 10 hours. The alkali metal compound is selected from alkali element oxides, alkali element nitride, alkali element carbonate, alkali earth element oxides, alkali earth element nitride and alkali earth element.

Abstract translation: 目的：提供一种用于集尘的碳化硅陶瓷过滤器，其加入碱金属和碱土金属具有高强度。 构成：碳化硅陶瓷过滤器的制造方法包括以下步骤：将碳化硅陶瓷粉末100重量％，烧结助剂（粘土）1.0〜15.0重量％，成型助剂1.0〜5.0重量％，0.1〜 5.0重量％的碱金属化合物，0.5-5.0重量％的分散剂和5-15.0重量％的水; 老化混合物; 将过滤器形式的混合物以100至800kg / cm 2的压力挤出; 并烧结过滤器。 烧结过程包括以1.5℃/ min的升温速度将陶瓷过滤器加热至800℃的步骤; 在800℃保持6小时; 将陶瓷过滤器加热至1400°C，升温速度为4°C / min; 并将其保持在1400°C 10小时。 碱金属化合物选自碱金属元素氧化物，碱金属元素氮化物，碱金属元素碳酸盐，碱土金属氧化物，碱土金属氮化物和碱土金属元素。