公开(公告)号：KR1020060041394A

公开(公告)日：2006-05-12

申请号：KR1020040090469

申请日：2004-11-08

Applicant: 재단법인 포항산업과학연구원 ,  한국과학기술연구원 ,  주식회사 서머텍 코리아

Inventor： 황순영 ,  전형우 ,  김진홍 ,  이해원 ,  성병근 ,  김주선 ,  석현광

IPC: B22F9/24

Abstract: 본 발명은 용사코팅용 나노구조 텅스텐 카바이드-코발트계 분말, 그 제조 방법 및 이를 이용한 나노구조 용사 코팅에 관한 것이다. 이를 위하여 본 발명에 따른 용사코팅용 나노구조 텅스텐 카바이드-코발트계 분말의 제조 방법은, 텅스텐 카바이드-코발트 혼합물, 분산제 및 용매를 혼합한 혼합물을 준비하는 단계, 혼합물에 결합제 및 가소제를 첨가하여 부분 응집된 슬러리를 제조하는 단계, 부분 응집된 슬러리를 분무 건조하여 구형 과립을 제조하는 단계, 및 구형 과립을 열처리하여 구형 과립에 함유된 유기물을 제거하는 단계를 포함한다. 이러한 본 발명을 통하여 용사 코팅의 내마모 특성을 크게 향상시킬 수 있다.
용사코팅, 텅스텐 카바이드, 코발트, 슬러리, 부분 응집

公开(公告)号：KR100471652B1

公开(公告)日：2005-03-08

申请号：KR1020020023774

申请日：2002-04-30

Applicant: 한국과학기술연구원

Inventor： 이해원 ,  김주선 ,  이종호 ,  송휴섭 ,  신현익

IPC: C04B35/573

CPC classification number: C04B35/63 ,  B82Y30/00 ,  C04B35/573 ,  C04B35/634 ,  C04B2235/3826 ,  C04B2235/422 ,  C04B2235/428 ,  C04B2235/48 ,  C04B2235/5436 ,  C04B2235/5454 ,  C04B2235/604 ,  C04B2235/608 ,  C04B2235/77

Abstract: 본 발명은 규소분말과 결합제로서 열경화성 수지로 구성되는 소정 형태의 규소공급 시편을 준비하고, 탄화규소/탄소 충전체를 준비하고, 반응결합로 내에서 상기 충전체의 일면에 상기 규소공급 시편을 접촉시키고, 진공 또는 비활성 분위기하에서 규소의 용융온도로 열처리하여 규소공급시편 내의 용융규소를 충전체 내부로 침윤시키는 것을 포함하여 이루어지는 반응결합 탄화규소 제조방법을 제공한다. 본 발명에 의하면, 반응결합 탄화규소의 형상, 크기, 두께에 관계없이 가장 효율적으로 용융 규소를 공급하면서도 용융 규소의 응집을 방지하고 용융 규소의 균일한 공급이 가능하다.

公开(公告)号：KR1020040098938A

公开(公告)日：2004-11-26

申请号：KR1020030031269

申请日：2003-05-16

Applicant: 한국과학기술연구원

Inventor： 이해원 ,  이종호 ,  김주선 ,  김태은 ,  임건자

IPC: H01L21/302

Abstract: PURPOSE: High performance slurry for STI(shallow trench isolation)-CMP(chemical mechanical polishing) is provided to prevent a semiconductor pattern and equipment from being damaged by corrosion by controlling each polishing rate of a silica thin film and a silicon nitride thin film, by forming ceria slurry capable of achieving variable selectivity and by using the slurry in a neutral condition. CONSTITUTION: Distilled water is prepared. CeO2 particles having a nano size and 1-5 weight percent as compared with the distilled water are used as polishing agent. Slurry includes the distilled water and the CeO2 particles. Citric acid is used as a distribution stabilizer that transfers the isoelectric point of the slurry to an acid region to stabilize a distribution state in a neutral condition, having 2-3 weight percent as compared with the polishing agent.

Abstract translation: 目的：提供用于STI（浅沟槽隔离）-CMP（化学机械抛光）的高性能浆料，以通过控制二氧化硅薄膜和氮化硅薄膜的每种抛光速率来防止半导体图案和设备被腐蚀损坏， 通过形成能够实现可变选择性的二氧化铈浆料和通过在中性条件下使用该浆料。 构成：准备蒸馏水。 与蒸馏水相比，具有纳米尺寸和1-5重量％的CeO 2颗粒被用作抛光剂。 浆料包括蒸馏水和CeO2颗粒。 使用柠檬酸作为分散稳定剂，其将浆料的等电点转移到酸性区域以稳定在中性条件下的分布状态，其与抛光剂相比具有2-3重量％。

公开(公告)号：KR100435006B1

公开(公告)日：2004-06-09

申请号：KR1020010047605

申请日：2001-08-08

Applicant: 한국과학기술연구원

Inventor： 이해원 ,  송휴섭 ,  이종호 ,  김주선 ,  신현익

IPC: C04B35/573 ,  C04B35/622

Abstract: PURPOSE: Provided is a manufacturing method of high density preforms for sintered silicon carbides(SiC) which have no separation of particle sizes and no compaction defects by pressing powder with wide particle size distribution. CONSTITUTION: The preforms with homogeneous compaction are manufactured by the following steps of; (i) mixing SiC powder with wide particle size distribution, 1-20wt.%(based on the powder) of phenol resin, and alcohol(ethyl or butyl alcohol); (ii) dropping the mixed slurry into water or hardener-contained water(70-90deg.C), and mixing strongly for 5-30min to form granules; (iii) filtering and washing; (iv) drying granules at 70deg.C or lower; (v) feeding granules to a mold and pressing under pressure of 0.1-50MPa for 5-60min for homogeneously compacted preforms; and (vi) thermal treating the preforms at 400-1250deg.C in inert gas atmosphere or vacuum, which results in that carbon residue is obtained from decomposition of phenol resin and strength of preforms is increased by densification of carbon residue.

Abstract translation: 目的：提供一种用于烧结碳化硅（SiC）的高密度预成型坯的制造方法，该方法通过压制具有宽粒度分布的粉末而没有粒度分离和压实缺陷。 组成：均质压实的预成型坯通过以下步骤制造： （i）混合具有宽粒度分布的SiC粉末，酚醛树脂和醇（乙基或丁醇）的1-20wt。％（基于粉末）; （ii）将混合浆料滴入水或含硬化剂的水（70-90℃）中，强烈混合5-30分钟以形成颗粒; （iii）过滤和洗涤; （iv）在70℃或更低温度下干燥颗粒; （v）将颗粒加入模具中，并在0.1-50MPa的压力下压制5-60分钟，以获得均匀压实的预制件; 和（vi）在惰性气氛或真空下在400-1250℃温度下热处理预成型坯，这导致由酚醛树脂的分解获得碳残余物，并且通过炭渣的致密化增加预成型坯的强度。

公开(公告)号：KR1020030013543A

公开(公告)日：2003-02-15

申请号：KR1020010047605

申请日：2001-08-08

Applicant: 한국과학기술연구원

Inventor： 이해원 ,  송휴섭 ,  이종호 ,  김주선 ,  신현익

IPC: C04B35/573 ,  C04B35/622

CPC classification number: C04B35/573 ,  C04B35/62695 ,  C04B2235/3826

Abstract: PURPOSE: Provided is a manufacturing method of high density preforms for sintered silicon carbides(SiC) which have no separation of particle sizes and no compaction defects by pressing powder with wide particle size distribution. CONSTITUTION: The preforms with homogeneous compaction are manufactured by the following steps of; (i) mixing SiC powder with wide particle size distribution, 1-20wt.%(based on the powder) of phenol resin, and alcohol(ethyl or butyl alcohol); (ii) dropping the mixed slurry into water or hardener-contained water(70-90deg.C), and mixing strongly for 5-30min to form granules; (iii) filtering and washing; (iv) drying granules at 70deg.C or lower; (v) feeding granules to a mold and pressing under pressure of 0.1-50MPa for 5-60min for homogeneously compacted preforms; and (vi) thermal treating the preforms at 400-1250deg.C in inert gas atmosphere or vacuum, which results in that carbon residue is obtained from decomposition of phenol resin and strength of preforms is increased by densification of carbon residue.

Abstract translation: 目的：提供一种用于烧结碳化硅（SiC）的高密度预成型件的制造方法，其通过压制具有宽的粒度分布的粉末而不具有粒径分离和压实缺陷。 构成：具有均匀压实的预成型件通过以下步骤制造： （i）混合具有宽粒度分布的SiC粉末，1-20重量％（基于粉末）的酚醛树脂和醇（乙基或丁醇）; （ii）将混合的浆料滴入水或含硬化剂的水（70-90℃）中，并强烈搅拌5-30分钟以形成颗粒; （iii）过滤和洗涤; （iv）干燥70度以下的颗粒; （v）将颗粒送入模具中，并在0.1-50MPa的压力下压制均匀压实的预制件5-60分钟; 和（vi）在惰性气氛或真空中在400-1250℃热处理预制品，这导致由酚醛树脂分解获得碳残余物，并通过碳残余物的致密化来增加预成型体的强度。

公开(公告)号：KR1020030013542A

公开(公告)日：2003-02-15

申请号：KR1020010047604

申请日：2001-08-08

Applicant: 한국과학기술연구원

Inventor： 이해원 ,  송휴섭 ,  이종호 ,  김주선 ,  신현익

IPC: C04B35/622

CPC classification number: C04B35/634 ,  C04B35/573 ,  C04B35/6264 ,  C04B35/62655 ,  C04B35/62695 ,  C04B35/638 ,  C04B2235/3217 ,  C04B2235/3826 ,  C04B2235/48 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/602 ,  C04B2235/94

Abstract: PURPOSE: Provided is a manufacturing method of tube compacts with no separation of particle sizes and homogeneous microstructure by centrifugal casting compound granules including powder with wide particle size distribution and phenol resin in the presence of solvent unlike conventional press forming. CONSTITUTION: The homogeneous centrifugally-cast compacts are manufactured by the following steps of; (i) mixing Al2O3 or SiC powder with wide particle size distribution, 1-20wt.%(based on the powder) of phenol resin, and alcohol(ethyl or butyl alcohol); (ii) dropping the mixed slurry into water or hardener-contained water(70-90deg.C), and mixing strongly for 5-30min. to form compound granules; (iii) filtering and washing; (iv) drying the granules at 70deg.C or lower; (v) centrifugal casting for increase of compaction by feeding granules in a mold, adding water, alcohol, or water-alcohol to fill 20-100% of pores formed by granules, and centrifuging at the velocity of 2-100times more speedy than the acceleration of gravity for 0.5-2hrs with heating(80-110deg.C); (vi) holding the compacts at 50-80deg.C for 2-10hrs for removing remained solvent and hardening phenol resin completely; (vii) removing fats from the compacts in inert gas atmosphere or vacuum for compacts with carbon residue, or air atmosphere for compacts without carbon residue.

Abstract translation: 目的：提供一种管式压块的制造方法，其与常规压制成型不同，在溶剂存在下，溶剂存在下，通过离心铸造复合颗粒（包括具有宽粒径分布的粉末）和酚醛树脂，不分离颗粒尺寸和均匀的微观结构。 构成：均匀的离心铸造压块通过以下步骤制造： （i）混合具有宽粒度分布的Al 2 O 3或SiC粉末，1-20重量％（基于粉末）的酚醛树脂和醇（乙基或丁醇）; （ii）将混合的浆料倒入水或含硬化剂的水（70-90℃）中，并强烈搅拌5-30分钟。 形成复合颗粒; （iii）过滤和洗涤; （iv）将颗粒干燥至70℃或更低; （v）离心铸造用于通过在模具中喂入颗粒来增加压实，加入水，醇或水 - 醇以填充由颗粒形成的20-100％的孔，并以比所述颗粒高2-100倍的速度离心 重力加速0.5-2小时，加热（80-110℃）; （vi）在50-80℃保持压块2-10小时，完全除去残留的溶剂和硬化酚醛树脂; （vii）在惰性气体气氛中从压实物中除去脂肪，或者用碳残留物除去压实物的真空，或没有碳残留的压块的空气气氛中。

公开(公告)号：KR1020010110509A

公开(公告)日：2001-12-13

申请号：KR1020000030975

申请日：2000-06-07

Applicant: 한국과학기술연구원

Inventor： 이해원 ,  송휴섭 ,  전형우 ,  김긍호 ,  김병균

IPC: C04B35/565 ,  C04B41/50

CPC classification number: C04B41/87 ,  B01D46/2403 ,  C04B35/52 ,  C04B35/573 ,  C04B35/64 ,  C04B38/0054

Abstract: 본 발명은 기공율이 20∼60% 범위이며, 평균 기공경이 0.5∼30 μm 범위이고 전체 기공 중 90% 이상이 개기공 구조를 가지며, 전기저항식으로 발열이 가능한 SiC-Si-MoSi
2 다공성 세라믹 발열체와 그 제조방법, 그리고 이 다공성 세라믹 발열체를 포함하는 배기가스 필터에 관한 것이다. 본 발명의 다공성 세라믹 발열체는 원료분말 SiC, Si, MoSi
2 , C로 제조한 성형체를 고온에서 반응소결하여 SiC 입자가 연결되어 이루어진 골격구조 위에 SiC, Si와 MoSi
2 로 이루어진 코팅층을 형성한 것으로, 분리능과 발열능을 동시에 보유하고 있을 뿐 아니라 강도, 내열충격성 및 내산화성이 우수하므로 자체발열식 배기가스 필터에 사용하기에 적합하다.

公开(公告)号：KR1020010081256A

公开(公告)日：2001-08-29

申请号：KR1020000006457

申请日：2000-02-11

Applicant: 한국과학기술연구원

Inventor： 송휴섭 ,  이해원 ,  전형우 ,  이종호 ,  하조웅

IPC: C04B35/565

CPC classification number: C04B35/573 ,  B28B1/20 ,  C04B35/634 ,  C04B41/91 ,  C04B2103/14 ,  C04B2103/40 ,  C04B2235/658

Abstract: PURPOSE: A reaction bonding silicon carbide is provided to increase facility of large-scaled parts molding without using a silicon blast furnace, and to manufacture the hydrocarbon products at a low cost by using the one-step thermal treatment. CONSTITUTION: A method for manufacturing reaction bonding silicon carbide is comprised of the steps of; forming a first layer by filling a first mixture containing silicon carbide powder and thermohardening resin, heating the outer wall of the mold, and hardening the mold by applying a centrifugal molding in real time; forming a second layer by filling a second mixture containing silicon powder, thermohardening resin, and thermoplastic resin, heating the outer wall of the same mold, and hardening the mold by applying a centrifugal molding in real time; removing the thermoplastic resin from the molding; carbonizing the molding by thermally decomposing the thermohardening resin; and heating the carbonized molding at a high temperature.

Abstract translation: 目的：提供反应接合碳化硅以增加大型零件成型的设备，而不需要使用硅高炉，并且通过使用一步热处理以低成本制造碳氢化合物产品。 构成：制造反应接合碳化硅的方法包括以下步骤： 通过填充含有碳化硅粉末和热硬化树脂的第一混合物，加热模具的外壁并通过实时离心成型硬化来形成第一层; 通过填充含有硅粉末，热硬化树脂和热塑性树脂的第二混合物，加热相同模具的外壁并通过实时离心成型硬化来形成第二层; 从模塑中除去热塑性树脂; 通过热分解热硬化树脂来碳化模制品; 并在高温下加热碳化的模制品。

公开(公告)号：KR1020000019090A

公开(公告)日：2000-04-06

申请号：KR1019980037015

申请日：1998-09-08

Applicant: 한국과학기술연구원

Inventor： 송휴섭 ,  이해원 ,  전형우 ,  김긍호 ,  하조웅

IPC: C04B35/565

CPC classification number: C04B35/573 ,  B28B1/20 ,  C04B35/52 ,  C04B35/63404

Abstract: PURPOSE: A method for preparing composite is provided, for the preparation of reaction-bonded silicon carbide and the improvement of strength between particles. CONSTITUTION: A centrifugal body of multi component silicon carbide is prepared by adding two or more types of silicon carbide powders having different size to a polymer solution of different molecular weight, respectively; ball milling to obtain a slurry wherein the polymer is adsorbed onto the surface of silicon carbide; mixing the slurries to make a homogeneous slurry, injecting into a mold and performing the centrifugal forming; removing the excess slurry and re-performing the centrifugal forming; and drying the centrifugal body and releasing. The centrifugal body of multi component silicon carbide-carbon is prepared by the same method except obtaining a carbon slurry wherein the polymer is adsorbed onto the surface of carbon and mixing the above mentioned slurries. The centrifugal body of composite for multi component silicon carbide-carbon-metal powder is prepared by the same method except obtaining the above mentioned carbon slurry and a metal slurry wherein the polymer is adsorbed onto the surface of a metal and mixing with the slurries. The polymer is polyvinyl pyrrolidone, polyvinyl alcohol or polyvinyl acetate.

Abstract translation: 目的：提供一种制备复合材料的方法，用于制备反应结合的碳化硅和提高颗粒之间的强度。 构成：通过向不同分子量的聚合物溶液中分别加入两种或更多种不同尺寸的碳化硅粉末来制备多组分碳化硅的离心体; 球磨以获得其中聚合物吸附到碳化硅表面上的浆料; 混合浆料制成均匀的浆料，注入模具并进行离心成型; 除去多余的浆料并重新进行离心成型; 并干燥离心体并释放。 除了获得其中聚合物吸附到碳表面上并混合上述浆料的碳浆料之外，通过相同的方法制备多组分碳化硅 - 碳的离心体。 除了获得上述碳浆料和金属浆料之外，通过相同的方法制备用于多组分碳化硅 - 碳 - 金属粉末的复合材料的离心体体，其中聚合物吸附在金属表面上并与浆料混合。 聚合物是聚乙烯吡咯烷酮，聚乙烯醇或聚乙酸乙烯酯。

公开(公告)号：KR1019990057428A

公开(公告)日：1999-07-15

申请号：KR1019970077479

申请日：1997-12-29

Applicant: 한국과학기술연구원

Inventor： 송휴섭 ,  이해원 ,  김긍호 ,  김상우 ,  전형우 ,  윤복규 ,  이석근

IPC: C04B35/00

Abstract: SiC-C, Al
2 O
3 -SiC-C, Al
2 O
3 -C, MgO-C, ZrO
2 -C, 또는 AlN-C계의 탄소함유 내화물의 제조방법으로서, 기지상을 이루는 SiC, Al
2 O
3 , MgO, ZrO
2 , 또는 AlN 미립 입자와 흑연 입자를 균일하게 혼합하고 이를 골재 입자 사이에 고르게 분포시키는 한편, 골재와 기지상 간의 계면강도 향상을 위해 내화물 성형체나 소결체에 무기 콜로이드 솔을 함침시키고 이를 열 처리함하여 계면 강도를 증가시킴으로써 결과적으로 탄소함유 내화물의 내열충격성과 내침식성을 향상시키는 방법이 제공된다.