Carbon nanotubes grown on bulk materials and methods for fabrication
    12.
    发明授权
    Carbon nanotubes grown on bulk materials and methods for fabrication 有权
    生长在散装材料上的碳纳米管和制造方法

    公开(公告)号:US08052951B2

    公开(公告)日:2011-11-08

    申请号:US12417887

    申请日:2009-04-03

    IPC分类号: D01F9/12

    摘要: Disclosed are structures formed as bulk support media having carbon nanotubes formed therewith. The bulk support media may comprise fibers or particles and the fibers or particles may be formed from such materials as quartz, carbon, or activated carbon. Metal catalyst species are formed adjacent the surfaces of the bulk support material, and carbon nanotubes are grown adjacent the surfaces of the metal catalyst species. Methods employ metal salt solutions that may comprise iron salts such as iron chloride, aluminum salts such as aluminum chloride, or nickel salts such as nickel chloride. Carbon nanotubes may be separated from the carbon-based bulk support media and the metal catalyst species by using concentrated acids to oxidize the carbon-based bulk support media and the metal catalyst species.

    摘要翻译: 公开了形成为具有由其形成的碳纳米管的本体支撑介质的结构。 本体支撑介质可以包括纤维或颗粒,并且纤维或颗粒可以由诸如石英,碳或活性炭的材料形成。 在本体支撑材料的表面附近形成金属催化剂种类,并且在金属催化剂种类的表面附近生长碳纳米管。 方法采用金属盐溶液,其可以包括铁盐如氯化铁,铝盐如氯化铝,或镍盐如氯化镍。 碳纳米管可以通过使用浓缩酸来氧化碳基本体载体介质和金属催化剂种类而从碳基体积载体介质和金属催化剂种类中分离出来。

    Carbon Nanotubes Grown on Bulk Materials and Methods for Fabrication
    14.
    发明申请
    Carbon Nanotubes Grown on Bulk Materials and Methods for Fabrication 有权
    散装材料上生长的碳纳米管和制造方法

    公开(公告)号:US20100254885A1

    公开(公告)日:2010-10-07

    申请号:US12417887

    申请日:2009-04-03

    摘要: Disclosed are structures formed as bulk support media having carbon nanotubes formed therewith. The bulk support media may comprise fibers or particles and the fibers or particles may be formed from such materials as quartz, carbon, or activated carbon. Metal catalyst species are formed adjacent the surfaces of the bulk support material, and carbon nanotubes are grown adjacent the surfaces of the metal catalyst species. Methods employ metal salt solutions that may comprise iron salts such as iron chloride, aluminum salts such as aluminum chloride, or nickel salts such as nickel chloride. Carbon nanotubes may be separated from the carbon-based bulk support media and the metal catalyst species by using concentrated acids to oxidize the carbon-based bulk support media and the metal catalyst species.

    摘要翻译: 公开了形成为具有由其形成的碳纳米管的本体支撑介质的结构。 本体支撑介质可以包括纤维或颗粒,并且纤维或颗粒可以由诸如石英,碳或活性炭的材料形成。 在本体支撑材料的表面附近形成金属催化剂种类,并且在金属催化剂种类的表面附近生长碳纳米管。 方法采用金属盐溶液,其可以包括铁盐如氯化铁,铝盐如氯化铝,或镍盐如氯化镍。 碳纳米管可以通过使用浓缩酸来氧化碳基本体载体介质和金属催化剂种类而从碳基本体载体介质和金属催化剂种类分离。

    Method of making a functionally graded material
    15.
    发明授权
    Method of making a functionally graded material 失效
    制作功能分级材料的方法

    公开(公告)号:US06375877B2

    公开(公告)日:2002-04-23

    申请号:US09842375

    申请日:2001-04-24

    IPC分类号: B29C6500

    摘要: A gelcasting method of making an internally graded article alternatively includes the steps of: preparing a slurry including a least two different phases suspended in a gelcasting solution, the phases characterized by having different settling characteristics; casting the slurry into a mold having a selected shape; allowing the slurry to stand for a sufficient period of time to permit desired gravitational fractionation in order to achieve a vertical compositional gradient in the molded slurry; gelling the slurry to form a solid gel while preserving the vertical compositional gradient in the molded slurry; drying the gel to form a dried green body; and sintering the dry green body to form a solid object, at least one property thereof varying along the vertical direction because of the compositional gradient in the molded slurry.

    摘要翻译: 制备内部分级制品的凝胶浇铸方法交替包括以下步骤:制备包含悬浮在凝胶浇注溶液中的至少两个不同相的浆料,其特征在于具有不同的沉降特性; 将浆料浇注到具有选定形状的模具中; 允许浆料静置足够的时间以允许所需的重力分馏,以便在模制浆料中达到垂直组分梯度; 将浆料胶凝以形成固体凝胶,同时保持模制浆料中的垂直组分梯度; 干燥凝胶以形成干燥的生坯; 并且将干燥的生坯烧结以形成固体物体,由于模制浆料中的组成梯度,其至少一种特性沿垂直方向变化。

    Method and apparatus for making articles from particle based materials
    17.
    发明授权
    Method and apparatus for making articles from particle based materials 失效
    从颗粒基材料制造制品的方法和装置

    公开(公告)号:US5476622A

    公开(公告)日:1995-12-19

    申请号:US898914

    申请日:1992-06-12

    摘要: A method and apparatus for the production of articles made of a particle-based material; e.g., ceramics and sintered metals. In accordance with the invention, a thermally settable slurry containing a relatively high concentration of the particles is conveyed through an elongate flow area having a desired cross-sectional configuration. The slurry is heated as it is advanced through the flow area causing the slurry to set or harden in a shape which conforms to the cross-sectional configuration of the flow area. The material discharges from the flow area as a self-supporting solid of near net final dimensions. The article may then be sintered to consolidate the particles and provide a high density product.

    摘要翻译: 一种用于生产由颗粒基材料制成的制品的方法和装置; 例如陶瓷和烧结金属。 根据本发明,含有相对高浓度颗粒的热固性浆料通过具有所需横截面构型的细长流动区域输送。 浆料在其通过流动区域前进时被加热,使得浆料固化或硬化成符合流动区​​域的横截面构造的形状。 材料从流动区域排放为近净最终尺寸的自支撑固体。 然后可以将制品烧结以固结颗粒并提供高密度产品。

    Method of making a functionally graded material
    19.
    发明授权
    Method of making a functionally graded material 失效
    制作功能分级材料的方法

    公开(公告)号:US06248286B1

    公开(公告)日:2001-06-19

    申请号:US09453774

    申请日:1999-12-03

    IPC分类号: B28B114

    摘要: A gelcasting method of making an internally graded article includes the steps of: preparing at least two slurries, each of the slurries including a different gelcastable powder suspended in a gelcasting solution, the slurries characterized by having comparable shrinkage upon drying and sintering thereof; casting the slurries into a mold having a selected shape, wherein relative proportions of the slurries is varied in at least one direction within the selected shape; gelling the slurries to form a solid gel while preserving the variation in relative proportions of the slurries; drying the gel to form a dried green body; and sintering the dry green body to form a solid object, at least one property thereof varying because of the variation in relative proportions of the starting slurries. A gelcasting method of making an internally graded article alternatively includes the steps of: preparing a slurry including a least two different phases suspended in a gelcasting solution, the phases characterized by having different settling characteristics; casting the slurry into a mold having a selected shape; allowing the slurry to stand for a sufficient period of time to permit desired gravitational fractionation in order to achieve a vertical compositional gradient in the molded slurry; gelling the slurry to form a solid gel while preserving the vertical compositional gradient in the molded slurry; drying the gel to form a dried green body; and sintering the dry green body to form a solid object, at least one property thereof varying along the vertical direction because of the compositional gradient in the molded slurry.

    摘要翻译: 制备内部分级制品的凝胶浇铸方法包括以下步骤:制备至少两种浆料,每种浆料包括悬浮在凝胶浇注溶液中的不同的可凝胶涂覆粉末,其特征在于其干燥和烧结时具有相当的收缩率; 将浆料浇铸到具有选定形状的模具中,其中浆料的相对比例在所选形状内的至少一个方向上变化; 胶凝形成固体凝胶,同时保持浆料相对比例的变化; 干燥凝胶以形成干燥的生坯; 并且将干燥的生坯烧结以形成固体物体,由于起始浆料的相对比例的变化,其至少一种性质变化。 制备内部分级制品的凝胶浇铸方法交替包括以下步骤:制备包含悬浮在凝胶浇注溶液中的至少两个不同相的浆料,其特征在于具有不同的沉降特性; 将浆料浇注到具有选定形状的模具中; 允许浆料静置足够的时间以允许所需的重力分馏,以便在模制浆料中达到垂直组分梯度; 将浆料胶凝以形成固体凝胶,同时保持模制浆料中的垂直组分梯度; 干燥凝胶以形成干燥的生坯; 并且将干燥的生坯烧结以形成固体物体,由于模制浆料中的组成梯度,其至少一种特性沿垂直方向变化。