-
Patent Agency Ranking
公开(公告)号：KR100882924B1
公开(公告)日：2009-02-10
申请号：KR1020070126963
申请日：2007-12-07
Applicant: 한국과학기술연구원
IPC: C04B35/478 , C04B35/56 , B82Y30/00 , B82Y40/00
CPC classification number: C04B35/5618 , B82Y30/00 , C04B35/645 , C04B2235/3843 , C04B2235/402 , C04B2235/404 , C04B2235/424 , C04B2235/425 , C04B2235/656 , C04B2235/6562 , C04B2235/6581 , C04B2235/77 , C04B2235/781 , C04B2235/786 , C04B2235/80
Abstract: A high intensity of Ti3AlC2 is provided to have destructive strength measured by a three-point bending strength test method over 7000 MPa and to maintain excellent machinability, excellent thermal characteristic and excellent electrical characteristic. A high intensity of Ti3AlC2 composite includes Ti3AlC2, Ti2AlC and TiCy(y>0.6) to main crystal phase. The TiCy phase less than 100 nano size is strengthened in a Ti3AlC2 matrix phase. A content of Ti2AlC secondary phase included in the Ti3AlC2 matrix phase and non-reactive TiCy(y>0.6) is 10 volume % or less. A mean size of the Ti3AlC2 grain is 30 mum or less.
Abstract translation: 提供高强度的Ti3AlC2以具有通过7000MPa的三点弯曲强度试验方法测量的破坏强度，并且保持优异的机械加工性，优异的热特性和优异的电特性。 高强度的Ti3AlC2复合材料包括主晶相的Ti3AlC2，Ti2AlC和TiCy（y> 0.6）。 在Ti3AlC2基体相中，小于100纳米尺寸的TiCi相增强。 包含在Ti 3 AlC 2基体相中的Ti 2 AlC第二相和非反应性TiC y（y> 0.6）的含量为10体积％以下。 Ti3AlC2晶粒的平均粒径为30μm以下。
-
公开(公告)号：KR1020090007167A
公开(公告)日：2009-01-16
申请号：KR1020070070866
申请日：2007-07-13
Applicant: 한국과학기술연구원
CPC classification number: C04B35/573 , C01B32/956 , C04B37/006 , C04B2235/424 , C04B2235/48 , C04B2237/083 , C04B2237/365 , C04B2237/61
Abstract: An apparatus for manufacturing reaction sintered bodies is provided to overcome size limitation of a heating furnace by using a continuous sintering process when manufacturing reaction bonded silicon carbide porous workpieces with various shapes and sizes including plates and tubes, and a method for manufacturing reaction bonded silicon carbide porous bodies by a continuous process using the same is provided. An apparatus for manufacturing a reaction sintered body comprises a transfer unit(14), a formed body injection part(12), a heating part(13), a sintered body discharge part, a first vacuum shutter(17), a second vacuum shutter(18), and a heating furnace. The transfer unit transfers formed bodies. The formed body injection part, heating part, and sintered body discharge part are included in the transfer unit and arranged in order in a direction that the formed bodies are transferred. The first vacuum shutter is installed between the formed body injection part and heating part such that the first vacuum shutter can be opened or closed to divide the formed body injection part and heating part. The second vacuum shutter is installed between the heating part and sintered body discharge part such that the second vacuum shutter can be opened or closed to divide the heating part and sintered body discharge part. The heating furnace is installed on the circumference of the heating part to form a hot zone in the heating part.
Abstract translation: 提供了制造反应烧结体的装置，以便制造具有各种形状和尺寸的反应结合的碳化硅多孔工件（包括板和管）时，通过使用连续烧结工艺来克服加热炉的尺寸限制，以及制造反应结合的碳化硅的方法 提供通过使用其的连续方法的多孔体。 制造反应烧结体的装置包括转印单元（14），成形体注入部分（12），加热部分（13），烧结体排出部分，第一真空快门（17），第二真空快门 （18）和加热炉。 转移单元转移成形体。 成型体注入部，加热部和烧结体排出部被包含在转印单元中，并且沿着成形体的转印方向依次配置。 第一真空闸门安装在成形体喷射部分和加热部分之间，使得第一真空闸门能够打开或关闭以分开成形体喷射部分和加热部分。 第二真空闸门安装在加热部件和烧结体排出部件之间，使得第二真空闸门能够打开或关闭以分开加热部件和烧结体排出部件。 加热炉安装在加热部的圆周上，在加热部形成热区。
-
公开(公告)号：KR100958097B1
公开(公告)日：2010-05-14
申请号：KR1020070070866
申请日：2007-07-13
Applicant: 한국과학기술연구원
Abstract: 본 발명은 용융 규소를 탄화질 성형체에 균일하게 침윤시켜 제품 전체에 걸쳐 균일한 기공 구조를 갖는 다공질 탄화규소 반응 소결체를 연속 소결 공정으로 대량 제조할 수 있을 뿐만 아니라, 판형 및 튜브 등 다양한 형상 및 크기의 다공질 반응소결 탄화규소 소재를 경제성이 높게 제조할 수 있는 방법을 제공한다. 구체적으로, 그라파이트 운송체를 사용하여 가열부의 핫 존에 성형체를 연속적으로 일정 속도로 통과시키면서 성형체 외부 용기에서 형성된 일정량의 용융 규소를 성형체와 연결된 카본 직포를 따라 성형체로 공급하여 성형체 내부로 침윤시키거나, 혹은 성형체 내부의 규소 분말이 용해되어 형성된 용융 규소를 성형체 내부로 균일하게 침윤시킴으로써 연속 반응소결 공정으로 반응소결 탄화규소 다공체를 제조한다. 본 발명의 연속 반응소결 공정에 의한 결과 열 충격에 의한 균열 발생 또는 기공 구조의 불균일성 등과 같은 문제점은 발생되지 않았으며, 다양한 기공 구조 및 크기를 갖는 다공질 반응소결 탄화규소 소재를 연속적으로 생산할 수 있었다.
반응소결 탄화규소, 다공체, 다공질, 연속 공정, 반응소결-
公开(公告)号：KR100838825B1
公开(公告)日：2008-06-17
申请号：KR1020070020641
申请日：2007-02-28
Applicant: 한국과학기술연구원
CPC classification number: C04B35/806 , C04B35/573 , C04B35/6263 , C04B38/0074 , C04B2111/00793 , C04B2235/3826 , C04B2235/424 , C04B2235/428 , C04B2235/5244 , C04B2235/526 , C04B2235/6022 , C04B2235/606 , C04B2235/6581 , C04B2235/728 , C04B2235/96 , C01B32/956 , B01D39/20 , C01P2006/90 , C02F1/44
Abstract: An SiC fiber reinforced reaction bonded SiC porous body of which pore size and porosity are adjustable, and which has improved mechanical properties is provided, and a fabrication process of the SiC fiber reinforced reaction bonded SiC porous body is provided. As an SiC porous body comprising an SiC powder(1), an SiC fiber(2), a carbon powder(4), and Si, an SiC fiber reinforced reaction bonded SiC porous body is characterized in that: the SiC fiber has a length being five times as long as a mean particle diameter of the SiC powder to 10 mm, and is contained in a fabricated SiC porous body(3) in the amount of 1 to 15 wt.%; and the silicon is formed by melt infiltration in inner and outer portions of the porous body. The fabricated SiC porous body has a porosity of 10 to 60 vol.%. A fabrication process of an SiC fiber reinforced SiC porous body comprises performing melt infiltration of molten silicon from an outer portion into an inner portion of a green compact at a temperature of 1450 to 1650 deg.C under a vacuum of 1 to 10 torr or an inert gas atmosphere, the green compact comprising an SiC powder, an SiC fiber which has a length of five times a mean particle diameter of the SiC powder to 10 mm, and is contained in a fabricated SiC porous body in the amount of 1 to 15 wt.%, and a carbon powder.
Abstract translation: 提供孔径尺寸和孔隙率可调的SiC纤维增强反应结合SiC多孔体，并提供机械性能改善，并提供SiC纤维增强反应结合SiC多孔体的制造工艺。 作为包含SiC粉末（1），SiC纤维（2），碳粉末（4）和Si的SiC多孔体，SiC纤维增强反应结合的SiC多孔体的特征在于：SiC纤维的长度 为SiC粉末的平均粒径的5倍至10毫米，并且以1〜15重量％的量包含在制造的SiC多孔体（3）中; 并且硅通过在多孔体的内部和外部部分的熔体渗透而形成。 所制造的SiC多孔体具有10至60体积％的孔隙率。 SiC纤维增强SiC多孔体的制造方法包括在1〜10托的真空下，在1450〜1650℃的温度下，将熔融硅从外部熔融浸入生坯的内部，或 惰性气体气氛中，生坯包含SiC粉末，SiC粉末的平均粒径的5倍的长度为10微米的SiC纤维，并且以1〜15的量包含在制造的SiC多孔体中 重量％，和碳粉末。
-
公开(公告)号：KR100882923B1
公开(公告)日：2009-02-10
申请号：KR1020070126962
申请日：2007-12-07
Applicant: 한국과학기술연구원
IPC: C04B35/56 , C04B35/10 , C04B35/645
CPC classification number: C04B35/5607 , C04B35/645 , C04B2235/3241 , C04B2235/3839 , C04B2235/402 , C04B2235/424 , C04B2235/425 , C04B2235/5427 , C04B2235/5436 , C04B2235/6562 , C04B2235/6581 , C04B2235/77
Abstract: A Cr2AlC sintered body manufacturing method is provided to have excellent heat property, excellent mechanical property, excellent electrical property and excellent machinability property, to raise price competitive power and to be applied to industry part of the Cr2AlC sintered body. A Cr2AlC sintered body manufacturing method comprises steps of: deoxidizing compound powder of the carbon source material powder and Cr2O3 powder at an inert atmosphere or a vacuum atmosphere and at 1000~1500 °C for 30 minutes to 10 hours and manufacturing Cr carbide powder; pressurizing and sintering the compound powder of the manufactured Cr carbide powder and a Al powder at 900~1400 °C and 15~40MPa for 30 minutes to 10 hours under vacuum atmosphere and manufacturing the Cr2AlC sintered body.
Abstract translation: Cr2AlC烧结体的制造方法具有优异的热性能，优异的机械性能，优异的电性能和优异的机械加工性能，以提高价格竞争力并适用于Cr2AlC烧结体的工业部分。 Cr2AlC烧结体的制造方法包括以下步骤：在惰性气氛或真空气氛下，在1000〜1500℃下将碳源材料粉末和Cr 2 O 3粉末的化合物粉末脱氧30分钟〜10小时，制造碳化铬粉末; 在真空气氛下，将制造的碳化铬粉末的复合粉末和900〜1400℃，15〜40MPa的Al粉末加压烧结30分钟〜10小时，制作Cr2AlC烧结体。
-
-
-
-
Search Results
5
records
(took 0.015 seconds)
