고밀도 탄화규소 섬유강화 탄화규소 복합재료의 제조방법
    67.
    发明授权
    고밀도 탄화규소 섬유강화 탄화규소 복합재료의 제조방법 有权
    高密度碳化硅纤维增强碳化硅复合材料的制造方法

    公开(公告)号:KR100829711B1

    公开(公告)日:2008-05-14

    申请号:KR1020070004714

    申请日:2007-01-16

    IPC分类号: C04B35/71 C04B35/76

    摘要: A method for producing a silicon carbide composite material reinforced with high-density silicon carbide fibers is provided to realize a low porosity of less than 2% and high strength of 400 MPa or greater while reducing the amount of a sintering aid. A method for producing a silicon carbide composite material reinforced with high-density silicon carbide fibers comprises the steps of: stacking silicon carbide tapes containing 2-7 wt% of a sintering aid and silicon carbide webs woven with silicon carbide fibers, alternately with each other, to form a preform; and sintering the preform. The sintering aid is a mixture containing at least two compounds selected from the group consisting of SiO2, BaO, MgO, Al2O3, Y2O3, Er2O3, Yb2O3, Lu2O3, Sc2O3, CaO and AlN. Further, a thickness of the silicon carbide tapes is 30 to 200 mum.

    摘要翻译: 提供一种用高密度碳化硅纤维增强的碳化硅复合材料的制造方法,在减少烧结助剂的量的同时,实现小于2%的低孔隙率和400MPa以上的高强度。 用高密度碳化硅纤维增强的碳化硅复合材料的制造方法包括以下步骤:将含有2-7重量%的烧结助剂的碳化硅带与碳化硅纤维相互交替的碳化硅网堆叠起来 ,以形成预制件; 并烧结预制件。 烧结助剂是含有选自SiO 2,BaO,MgO,Al 2 O 3,Y 2 O 3,Er 2 O 3,Yb 2 O 3,Lu 2 O 3,Sc 2 O 3,CaO和AlN中的至少两种化合物的混合物。 另外,碳化硅带的厚度为30〜200μm。

    순환형 라디안트 튜브에 사용되는 세라믹 튜브 및 그의제조 방법
    69.
    发明公开
    순환형 라디안트 튜브에 사용되는 세라믹 튜브 및 그의제조 방법 无效
    用于循环辐射管的陶瓷管及其制备方法

    公开(公告)号:KR1020040056331A

    公开(公告)日:2004-06-30

    申请号:KR1020020082934

    申请日:2002-12-23

    发明人: 김영우 배원수

    IPC分类号: C04B35/565 C04B35/64 B21C9/00

    摘要: PURPOSE: A ceramic tube used in a circulating radiant rube and its preparation method are provided, to obtain a ceramic tube having excellent mechanical properties by simple process. CONSTITUTION: The method comprises the steps of mixing a sintering auxiliary comprising alumina and yttria in the ratio of 8:2 to 6.5:3.5 by weight with silicon carbide; mixing the obtained mixture with a dispersant, a binder and a dispersion medium to prepare a slip; controlling the pH of slip; molding the slip to prepare a molded product; and sintering the molded product at a temperature of 1,800-1,850 deg.C under inert atmosphere. Preferably the ratio of silicon carbide and sintering auxiliary is 80-97 : 3-20 by weight; and the pH of slip is controlled to be 8.3-9.3.

    摘要翻译: 目的:提供一种用于循环辐射管的陶瓷管及其制备方法,通过简单的工艺获得具有优异机械性能的陶瓷管。 构成:该方法包括将包含氧化铝和氧化钇的烧结助剂与碳化硅的重量比为8:2至6.5:3.5的步骤; 将所得混合物与分散剂,粘合剂和分散介质混合以制备滑移; 控制滑爽的pH值; 模压成型制品; 并在惰性气氛下在1,800-1,850℃的温度下烧结成型制品。 优选地,碳化硅和烧结助剂的比例为80-97:3〜20重量% 滑差pH控制在8.3-9.3。