公开(公告)号：KR101196665B1

公开(公告)日：2012-11-02

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

Abstract: 본 발명은 섬유강화 세라믹복합재료의 제조에 있어서, 세라믹 복합재료에 가해지는 응력을 효과적으로 완화하고 변형저항성을 향상시키기 위해 보강섬유재를 이중으로 코팅하는 기술에 관한 것으로서, 구체적으로는 보강섬유에 열분해 탄소(PyC) 코팅층 및 질화붕소(BN) 코팅층을 차례로 형성한 후에 이를 섬유강화 복합재료의 제조에 이용하는 기술에 관한 것이다. 이중 코팅층 만을 섬유 계면에 적용하므로 다층 코팅에 비하여 경제적이며, 상기 이중의 코팅층은 탄화규소 섬유 등의 표면에 형성되어 우수한 산화저항성을 나타낼 뿐만 아니라 하중에 대한 응력완화성, 변형에 대한 저항성을 향상시키며, 기계적 강도가 우수하여, 쿡탑용 라디에이션, 에너지 절약형 열교환기, 원자로용 부품 등의 내구성을 증가시킨다.

公开(公告)号：KR1020050004996A

公开(公告)日：2005-01-13

申请号：KR1020030044110

申请日：2003-07-01

Applicant: 한국에너지기술연구원

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

IPC: H01M4/86

Abstract: PURPOSE: Provided is a method for manufacturing a cathode support for a solid oxide fuel cell that has excellent mechanical strength while maintaining porosity and shows high electroconductivity. CONSTITUTION: The method for manufacturing a high-strength cathode support for a solid oxide fuel cell comprises the steps of: mixing 35-55 vol% of nickel oxide powder, 45-65 vol% of yttria-stabilized zirconia and 30-45 vol% of a pore generator, mixing the resultant mixture with molding aids including 1-15 wt% of a binder, 1-10 wt% of a plasticizer, 1-5 wt% of a dispersant and 1-3 wt% of a release agent, wet mixing the resultant mixture with an alcohol, and then aging the mixture; molding the aged materials into a cathode support; and baking the molded cathode support at a temperature of 1300-1500 deg.C.

Abstract translation: 目的：提供一种固体氧化物型燃料电池用阴极支撑体的制造方法，其具有优异的机械强度，同时保持孔隙率并且显示出高的导电性。 构成：制造用于固体氧化物燃料电池的高强度阴极支撑体的方法包括以下步骤：将35-55体积％的氧化镍粉末，45-65体积％的氧化钇稳定的氧化锆和30-45体积％ 的孔发生器，将所得混合物与模塑助剂混合，所述模塑助剂包括1-15重量％的粘合剂，1-10重量％的增塑剂，1-5重量％的分散剂和1-3重量％的脱模剂， 将所得混合物用醇湿混合，然后使混合物老化; 将老化的材料成型为阴极支撑体; 并在1300-1500℃的温度下烘烤成型的阴极支撑体。

公开(公告)号：KR1020020068935A

公开(公告)日：2002-08-28

申请号：KR1020010009363

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 ,  B01D2239/0471 ,  B01D2239/10 ,  C04B35/565 ,  C04B35/64

Abstract: PURPOSE: A fabrication method of silicon carbide ceramics filters on the outer surface of which a coating layer is formed is provided to improve dust collection efficiency. CONSTITUTION: The fabrication method of silicon carbide ceramics filter includes the steps of mixing silicon carbide ceramics powder 100 vol.%, 0.1 to 30.0 vol.% of carbon powder (based on the 100 volume percent of silicon carbide ceramics powder), 1.0 to 15.0 wt.% of inorganic binder (based on the 100 weight percent of silicon carbide ceramics powder), 3.0 to 20.0 wt.% of organic binder, 0.1 to 5.0 wt.% of calcium carbonate, 0.1 to 15.0 wt.% of dispersant, 0.1 to 3.0 wt.% of releasing agent and 10.0 to 35.0 wt.% of water; aging the mixture; pressure extruding the mixture in the form of filter; coating the surface of the filter by spray coating a coating solution; and sintering the coated filter. The coating solution comprises, based on the 100 parts by weight of silicon carbide ceramics powder, 0.5 to 15.0 wt.% of clay, 0.1 to 5.0 wt.% of calcium carbonate, 0.1 to 5.0 wt.% of carboxymethylcellulose, 0.1 to 5.0 wt.% of dispersant, 0.1 to 3.0 wt.% of defoaming agent and 150 to 250 wt.% of water. The sintering process includes the steps of heating the coated ceramic filter up to 800°C at temperature elevation rate of 1 to 2 °C/min; holding it at 800°C for 1-6 hours; heating the coated ceramic filter in the temperature range of 1000 to 1800°C at temperature elevation rate of 4°C/min; holding it at 1000-1800°C for 1-10 hours; and cooling to ambient temperature at a cooling rate of 5°C/min.

Abstract translation: 目的：提供在其外表面上形成涂层的碳化硅陶瓷过滤器的制造方法，以提高灰尘收集效率。 构成：碳化硅陶瓷过滤器的制造方法包括将碳化硅陶瓷粉末100体积％，碳粉0.1〜30.0体积％（碳化硅陶瓷粉末的100体积％）混合，1.0〜15.0 无机粘合剂的重量百分比（基于100重量％的碳化硅陶瓷粉末），3.0-20.0重量％的有机粘合剂，0.1-5.0重量％的碳酸钙，0.1-15.0重量％的分散剂，0.1 至3.0重量％的脱模剂和10.0至35.0重量％的水; 老化混合物; 以过滤器的形式挤压混合物; 通过喷涂涂层溶液涂覆过滤器的表面; 并烧结涂层过滤器。 涂布溶液基于100重量份的碳化硅陶瓷粉末，含有0.5〜15.0重量％的粘土，0.1〜5.0重量％的碳酸钙，0.1〜5.0重量％的羧甲基纤维素，0.1〜5.0重量％ 的分散剂，0.1〜3.0重量％的消泡剂和150〜250重量％的水。 烧结过程包括以1至2℃/ min的升温速率将涂覆的陶瓷过滤器加热至800℃的步骤; 在800℃保持1-6小时; 在1000〜1800℃的温度范围内以4℃/ min的升温速度加热涂覆的陶瓷过滤器; 在1000-1800℃保持1-10小时; 并以5℃/ min的冷却速度冷却至环境温度。

公开(公告)号：KR1020020067257A

公开(公告)日：2002-08-22

申请号：KR1020010007749

申请日：2001-02-16

Applicant: 한국에너지기술연구원

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

IPC: C04B35/573

CPC classification number: C04B35/573 ,  C04B35/563 ,  C04B35/62695 ,  C04B35/64 ,  C04B2235/3821 ,  C04B2235/3826

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 - 碳化硼复合材料中的游离硅氧烷的强度/硬度降低。 构成：通过液相反应烧结制造碳化硅 - 碳化硼复合材料的方法包括以下步骤：（i）将5-40重量％的碳化硼（B4C）加入到包含80-95重量％的碳化硅和 5-20重量％的碳粉末，然后混合，其中碳化硅由比例为7:3的粗颗粒和细颗粒组成，碳粉是平均粒度小于1μm的炭黑; （ii）在第一步骤中获得的混合物中加入1-2重量％的有机粘合剂，然后用具有50-100目尺寸的筛子将上述混合物造粒; （iii）以300-500Kg / cm 2的单轴压制压制造粒混合物; 和（iv）烧结工艺。 烧结过程的特征在于，将上述形成的混合物在10-1-10 -2托的减压气氛下以1至2℃/ min的升温速率加热至600℃，然后将 温度1小时; 依次加热至1550〜1600℃的温度范围，升温速度为5℃/分钟，然后保温一定时间; 最后加热到1700℃。

公开(公告)号：KR100569882B1

公开(公告)日：2006-04-11

申请号：KR1020030023828

申请日：2003-04-15

Applicant: 한국에너지기술연구원

Inventor： 우상국 ,  김종원 ,  이기성 ,  박기배 ,  이시우 ,  한인섭 ,  서두원 ,  정세환

IPC: B01D71/02

Abstract: 본 발명은 약 500℃ 이상의 온도에서 전자와 산소이온을 전도할 수 있는 다성분계 금속 산화물로 형성되는, 산소-함유 기체 혼합물로부터 산소를 분리시킬 수 있는 막으로서, 산소이온 전도도가 전자 전도도보다 작고 산소투과유속이 막 표면에서의 산소 분자-이온간 교환반응속도에 의해 결정되는 막에 있어서, 산소투과유속의 증진을 위해, 전자와 산소이온을 전도할 수 있는 다성분계 금속 산화물을 막 표면에 개재시키는 방법에 관한 것에 관한 것으로 특히 La
1-x A
x Ga
y Fe
1-y O
3-δ 로 표시되는 다성분 금속 산화물로 구성된 산소투과 분리막의 표면개질방법에 관한 것이다.
혼합전도성 페로프스카이트 다성분계 금속 산화물, 표면 개질층, 산소투과 분리막

公开(公告)号：KR1020040089964A

公开(公告)日：2004-10-22

申请号：KR1020030023828

申请日：2003-04-15

Applicant: 한국에너지기술연구원

Inventor： 우상국 ,  김종원 ,  이기성 ,  박기배 ,  이시우 ,  한인섭 ,  서두원 ,  정세환

IPC: B01D71/02

CPC classification number: B01D71/02 ,  B01D53/228 ,  C01B13/0255

Abstract: PURPOSE: Provided are mixed-conducting perovskite-type oxygen permeable membrane, which has improved flux rate with keeping high stability due to surface modification, and a method for surface modifying thereof. CONSTITUTION: In a method for preparing an oxygen permeable membrane by using a dense membrane prepared by press-forming powder synthesized by perovskite-type single phase of multi-component metal oxide represented by La1-xAxGayFe1-yO3-delta, where A is an alkali earth metal, 0

Abstract translation: 目的：提供一种混合导电钙钛矿型透氧膜，其具有改善的通量，同时保持由于表面改性而具有的高稳定性及其表面改性方法。 构成：在通过使用由La1-xAxGayFe1-yO3-δ表示的多组分金属氧化物的钙钛矿型单相合成的压制成形粉末制备的致密膜的方法中，其中A为碱 0

公开(公告)号：KR100419780B1

公开(公告)日：2004-02-21

申请号：KR1020010009363

申请日：2001-02-23

Applicant: 한국에너지기술연구원

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

IPC: B01D39/20

Abstract: PURPOSE: A fabrication method of silicon carbide ceramics filters on the outer surface of which a coating layer is formed is provided to improve dust collection efficiency. CONSTITUTION: The fabrication method of silicon carbide ceramics filter includes the steps of mixing silicon carbide ceramics powder 100 vol.%, 0.1 to 30.0 vol.% of carbon powder (based on the 100 volume percent of silicon carbide ceramics powder), 1.0 to 15.0 wt.% of inorganic binder (based on the 100 weight percent of silicon carbide ceramics powder), 3.0 to 20.0 wt.% of organic binder, 0.1 to 5.0 wt.% of calcium carbonate, 0.1 to 15.0 wt.% of dispersant, 0.1 to 3.0 wt.% of releasing agent and 10.0 to 35.0 wt.% of water; aging the mixture; pressure extruding the mixture in the form of filter; coating the surface of the filter by spray coating a coating solution; and sintering the coated filter. The coating solution comprises, based on the 100 parts by weight of silicon carbide ceramics powder, 0.5 to 15.0 wt.% of clay, 0.1 to 5.0 wt.% of calcium carbonate, 0.1 to 5.0 wt.% of carboxymethylcellulose, 0.1 to 5.0 wt.% of dispersant, 0.1 to 3.0 wt.% of defoaming agent and 150 to 250 wt.% of water. The sintering process includes the steps of heating the coated ceramic filter up to 800°C at temperature elevation rate of 1 to 2 °C/min; holding it at 800°C for 1-6 hours; heating the coated ceramic filter in the temperature range of 1000 to 1800°C at temperature elevation rate of 4°C/min; holding it at 1000-1800°C for 1-10 hours; and cooling to ambient temperature at a cooling rate of 5°C/min.

Abstract translation: 目的：提供一种在其外表面上形成涂层的碳化硅陶瓷过滤器的制造方法，以提高灰尘收集效率。 一种碳化硅陶瓷过滤器的制造方法，包括将碳化硅陶瓷粉末100体积％，碳粉末0.1〜30.0体积％（以碳化硅陶瓷粉末100体积％为基准），1.0〜15.0 （基于100重量％的碳化硅陶瓷粉末），3.0重量％至20.0重量％的有机粘合剂，0.1重量％至5.0重量％的碳酸钙，0.1重量％至15.0重量％的分散剂，0.1重量％ 至3.0重量％的脱模剂和10.0至35.0重量％的水; 老化混合物; 以过滤器的形式挤压混合物; 通过喷涂涂料溶液涂布过滤器的表面; 并烧结涂覆的过滤器。 基于100重量份的碳化硅陶瓷粉末，涂覆溶液包含0.5至15.0重量％的粘土，0.1至5.0重量％的碳酸钙，0.1至5.0重量％的羧甲基纤维素，0.1至5.0重量％ ，分散剂％，消泡剂0.1-3.0重量％和水150-250重量％。 烧结过程包括以下步骤：以1至2℃/ min的升温速率将涂覆的陶瓷过滤器加热至800℃; 在800℃保持1-6小时; 在4℃和分钟的升温速率下，在1000至1800℃的温度范围内加热涂覆的陶瓷过滤器; 在1000-1800℃保持1-10小时; 并以5℃/分钟的冷却速率冷却至环境温度。

公开(公告)号：KR100419779B1

公开(公告)日：2004-02-21

申请号：KR1020010009362

申请日：2001-02-23

Applicant: 한국에너지기술연구원

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

IPC: B01D39/20

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: 用途：用于除尘的碳化硅陶瓷过滤器，具有高强度，加入碱金属和碱土金属。 一种碳化硅陶瓷过滤器的制造方法，包括将碳化硅陶瓷粉末100重量％，助熔剂（粘土）1.0〜15.0重量％，成型助剂1.0〜5.0重量％，成型助剂0.1〜15重量％ 5.0重量％的碱金属化合物，0.5至5.0重量％的分散剂和5至15.0重量％的水; 老化混合物; 以100至800kg / cm 2的压力将过滤器形式的混合物挤压; 并烧结过滤器。 烧结过程包括如下步骤：将陶瓷过滤器以升温速度1.5℃/分钟升温至800℃; 在800℃保持6小时; 将陶瓷过滤器以4℃/分钟的升温速率加热至1400℃; 并保持1400℃10小时。 碱金属化合物选自碱金属氧化物，碱金属氮化物，碱金属碳酸盐，碱土金属氧化物，碱土金属氮化物和碱土金属元素。

公开(公告)号：KR100408579B1

公开(公告)日：2003-12-06

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率热交换器来收集高温废热以便重新使用。 组成：内管由陶瓷材料制成，形成有彼此分开并插入传热管（11）中的上管（21）和下管（21'），并具有螺旋状开口的周边。 传热管安装在进气侧集管块（41,41'）和出气侧集管块（42,42'）上，并用固定法兰和联接螺栓安装到进气侧，以使空气流过其中 同时在内管的内部和外部。

公开(公告)号：KR200308378Y1

公开(公告)日：2003-03-28

申请号：KR2020020031648

申请日：2002-10-23

Applicant: 한국에너지기술연구원

Inventor： 김종원 ,  박기배 ,  이상호 ,  우상국 ,  이기성 ,  정세환

IPC: C01B13/02

Abstract: 본 고안은 산소 발생기에 관한 것으로, 보다 상세하게는 세라믹 소재의 분리막에 전극을 이용하여 전자펌핑을 통해 공기 중의 산소만을 선택적으로 분리하여 배출하는 전자펌핑을 이용한 세라믹 산소발생기에 관한 것이다.
본 고안에 따른 전자펌핑을 이용한 세라믹 산소발생기는 내측면에 외부로부터 유입된 공기가 통과하는 다수의 공기 유로(11)가 형성된 공기 유입부(1)와, 상기 공기 유입부(1)의 반대편에 구비되며, 그 내측면에는 산소를 포집하는 다수의 산소 유로(31)가 형성되고, 상기 산소 유로(31)들을 통해 포집된 산소를 외부로 배출하는 산소 배출구(32)가 형성된 산소 배출부(3)와, 상기 공기 유입부(1) 및 산소 배출부(3) 중 적어도 어느 하나의 내부에 삽입되어 열을 공급하는 히터(5)와, 상기 공기 유입부(1)와 산소 배출부(3) 내측면 사이에 밀착되며 상기 공기 유입부(1)와 산소 배출부(3)에 존재하는 산소의 분압차에 의해 산소를 선택적으로 투과시키는 세라믹 분리막(7)과, 상기 세라믹 분리막(7)을 투과하여 충진되는 상기 산소 배출부(3) 측의 순수한 산소를 상기 산소 배출구(32)를 통해 외부로 강제 펌핑하는 펌프(9)로 구성되는 것을 특징으로 한다.