公开(公告)号：US20040160157A1

公开(公告)日：2004-08-19

申请号：US10780714

申请日：2004-02-19

Applicant: Futaba Corporation

Inventor： Hirofumi Takikawa ,  Youhei Fujimura ,  Shigeo Itoh

IPC: H01K001/04 ,  H01J001/14 ,  H01J019/06

CPC classification number: B82Y30/00 ,  B82Y40/00 ,  C01B32/162 ,  C01P2002/85 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64 ,  H01J1/3044 ,  H01J9/025 ,  H01J2201/30446 ,  Y10S977/949

Abstract: A carbon substance comprises a structure and line-shaped bodies, the structure having a size ranging from about 1 nullm to about 100 nullm and including carbon and a metal or a metallic oxide, and the line-shaped bodies having diameters smaller than about 200 nm and including carbon as a main component thereof and growing radially from a surface of the structure. A method for manufacturing the carbon substance uses a thermal decomposition of a source gas containing carbon in the vicinity of a catalyst, wherein the catalyst comprises a first and a second materials, the first material being Ni or a Ni oxide and the second material being In or an In oxide; and the thermal decomposition is performed at a temperature ranging from about 675null C. to about 750null C. An electron emission element uses the carbon substance as an electron emission material. A composite material includes the carbon substance in its matrix.

Abstract translation: 碳物质包括结构和线状体，该结构的尺寸范围为约1μm至约100μm，并且包括碳和金属或金属氧化物，并且直径小于约200nm的线状体 并且包括碳作为其主要成分并且从结构的表面径向生长。 制造碳物质的方法使用在催化剂附近含有碳原子气体的热分解，其中催化剂包含第一和第二材料，第一材料为Ni或Ni氧化物，第二材料为In 或In氧化物; 并且热分解在约675℃至约750℃的温度下进行。电子发射元件使用碳物质作为电子发射材料。 复合材料包括其基质中的碳物质。