Method for producing SiC preform with high volume fraction
    1.
    发明授权
    Method for producing SiC preform with high volume fraction 失效
    生产具有高体积分数的SiC预制件的方法

    公开(公告)号:US06491862B1

    公开(公告)日:2002-12-10

    申请号:US09688829

    申请日:2000-10-17

    IPC分类号: B28B302

    CPC分类号: C04B35/565

    摘要: Disclosed is a method for producing an SiC preform of a high volume fraction used for the manufacture of a metal matrix composite. The method involves the steps of mixing SiC particles of different particle sizes each selected from a range of 0.2 to 48 &mgr;m with an organic binder, an inorganic binder, an aggregating agent, and distilled water, thereby producing a mixture, and stirring the mixture in accordance with a ball milling process, thereby producing a slurry containing the SiC particles, pouring the slurry containing the SiC particles into a mold having upper and lower molds respectively provided with absorbent bodies, and squeezing the slurry in the mold, thereby reducing a residual moisture content of the slurry, completely drying the slurry reduced in residual moisture content, thereby producing an SiC preform, and calcinating the SiC preform. The preform is impregnated with a metal matrix while maintaining a high reinforcement volume fraction of 70 vol % or more. Accordingly, this preform can be widely used for fundamental materials of metal matrix composites used to manufacture electronic packaging components and aerospace components requiring a low thermal expansion coefficient and a high thermal conductivity.

    摘要翻译: 公开了一种用于制造用于制造金属基质复合材料的高体积分数的SiC预制件的方法。 该方法包括将0.2〜48μm的范围的不同粒径的SiC颗粒与有机粘合剂,无机粘合剂,聚集剂和蒸馏水混合的步骤,从而制备混合物 根据球磨工艺,由此制备含有SiC颗粒的浆料,将含有SiC颗粒的浆料倒入具有分别设置有吸收体的上模和下模的模具中,并将浆料挤压到模具中,从而减少残留水分 浆料的含量,完全干燥浆料减少了残留水分含量,由此制备了SiC预制件,并煅烧了SiC预制件。 预成型体用金属基体浸渍,同时保持70体积%以上的高增强体积分数。 因此,该预型件可广泛用于制造电子封装部件和需要低热膨胀系数和高导热性的航空航天部件的金属基复合材料的基础材料。

    Process for preparing a preform with high volume fraction SiC
    2.
    发明授权
    Process for preparing a preform with high volume fraction SiC 失效
    用于制备具有高体积分数SiC的预成型体的方法

    公开(公告)号:US06190604B1

    公开(公告)日:2001-02-20

    申请号:US09300122

    申请日:1999-04-26

    IPC分类号: B28B302

    摘要: The present invention relates to a method of preparing a preform with a high volume fraction of SiC particles. A slurry containing SiC particles and binders is ball-milled and pressed in an apparatus to give a primary preform. This primary preform is dried at room temperature and then, at a high temperature. The dried primary preform is subjected to calcination to prepare the preform. In the apparatus, which comprises a bottom die; a top mold with a cavity, placed on the bottom die, an upper punch for pressing a material for the preform in the cavity; and two water-absorbers, one being inserted between the bottom die and the top mold, the other being placed on the top mold, the slurry is introduced in the cavity and pressed by the punch while the water is absorbed in the absorbers or drained through a gap between the bottom die and the top mold, thereby improving the volume fraction of SiC particles. The preform can be used as a fundamental material in producing metal matrix composites having a high thermal conductivity and a low coefficient of thermal expansion, suitable for the application for, e.g., electronic packaging and space-air structures.

    摘要翻译: 本发明涉及一种制备具有高体积分数的SiC颗粒的预成型体的方法。 将含有SiC颗粒和粘合剂的浆料球磨并在设备中压制以得到初级预制件。 该初级预制件在室温下干燥,然后在高温下干燥。 将干燥的初级预制件进行煅烧以制备预制件。 在包括底模的装置中; 放置在底模上的具有空腔的顶模,用于在空腔中挤压预制件的材料的上冲头; 和两个吸水器,一个插入在底模和顶模之间,另一个放置在顶模上,将浆料引入空腔中并由冲头压制,同时水被吸收在吸收器中或排出通过 底模和顶模之间的间隙,从而提高SiC颗粒的体积分数。 该预型件可用作生产具有高热导率和低热膨胀系数的金属基复合材料的基本材料,适用于例如电子封装和空间 - 空气结构。

    Process for making oxide dispersion-strengthened tungsten heavy alloy by mechanical alloying
    3.
    发明授权
    Process for making oxide dispersion-strengthened tungsten heavy alloy by mechanical alloying 失效
    通过机械合金化制备氧化物分散强化钨重合金的方法

    公开(公告)号:US06368376B2

    公开(公告)日:2002-04-09

    申请号:US09734174

    申请日:2000-12-12

    IPC分类号: B22F100

    摘要: Disclosed is a process for making an oxide dispersion-strengthened tungsten heavy alloy by mechanical alloying that includes the steps of: adding 0.1 to 5 wt. % of Y2O3 powder to a mixed powder comprising more than 90 wt. % of tungsten powder, and nickel and iron powders for the rest; and subjecting the resulting mixture to a mechanical alloying to prepare an oxide dispersion-strengthened tungsten heavy alloy powder. The oxide dispersion-strengthened tungsten heavy alloy prepared by the mechanical alloying is characterized in that fine Y2O3 particles are uniformly dispersed in the matrix which are stable at high temperatures results in enhanced high-temperature strength and a reduction of the shearing strain of the fraction during high strain rate deformation.

    摘要翻译: 公开了一种通过机械合金化制备氧化物分散强化钨重合金的方法,其包括以下步骤:加入0.1至5wt。 %的Y2O3粉末与包含大于90wt。 %的钨粉,其余为镍和铁粉; 并对所得混合物进行机械合金化以制备氧化物分散强化钨重合金粉末。 通过机械合金化制备的氧化物分散强化钨重合金的特征在于,精细的Y2O3颗粒均匀分散在基体中,在高温下稳定,导致高温强度提高,馏分的剪切应变降低 高应变率变形。

    GRAPHENE/METAL NANOCOMPOSITE POWDER AND METHOD OF MANUFACTURING THE SAME
    6.
    发明申请
    GRAPHENE/METAL NANOCOMPOSITE POWDER AND METHOD OF MANUFACTURING THE SAME 审中-公开
    石墨/金属纳米复合粉及其制造方法

    公开(公告)号:US20110256014A1

    公开(公告)日:2011-10-20

    申请号:US13086749

    申请日:2011-04-14

    摘要: Graphene/metal nanocomposite powder and a method of preparing the same are provided. The graphene/metal nanocomposite powder includes a base metal and graphenes dispersed in the base metal. The graphenes act as a reinforcing material for the base metal. The graphenes are interposed as thin film types between metal particles of the base metal and bonded to the metal particles. The graphenes contained in the base metal have a volume fraction exceeding 0 vol % and less than 30 vol % corresponding to a limit within which a structural change of the graphenes due to a reaction between the graphenes is prevented.

    摘要翻译: 提供了石墨烯/金属纳米复合粉末及其制备方法。 石墨烯/金属纳米复合材料粉末包括分散在贱金属中的贱金属和石墨烯。 石墨烯作为贱金属的增强材料。 石墨烯作为薄膜类型插入到贱金属的金属颗粒之间并与金属颗粒结合。 包含在贱金属中的石墨烯具有超过0体积%且小于30体积%的体积分数,对应于其中防止由于石墨烯之间的反应引起的石墨烯的结构变化的极限。

    Fabrication method for porous carbon fibers
    7.
    发明申请
    Fabrication method for porous carbon fibers 审中-公开
    多孔碳纤维的制造方法

    公开(公告)号:US20100081351A1

    公开(公告)日:2010-04-01

    申请号:US12385763

    申请日:2009-04-17

    IPC分类号: D04H1/08 D01F9/14

    摘要: Disclosed is a method for fabrication of porous carbon fibers. More particularly, the method for fabrication of porous carbon fibers comprises the steps of: processing starch to prepare a gelled starch solution; adding organic acid to the gelled starch solution to prepare a starch solution; dissolving carbon nanotubes in a solvent and adding fiber formable polymer thereto to prepare a carbon nanotube/fiber formable polymer solution; mixing the starch solution with the carbon nanotube/fiber formable polymer solution obtained from the above steps, in order to prepare a carbon nanotube/starch/fiber formable polymer solution; electro-spinning or wet-state spinning the prepared carbon nanotube/starch/fiber formable polymer solution to produce starch composite fibers; oxidation heating the starch composite fibers, then, executing carbonization and vacuum heat treatment of the heated fibers, so as to fabricate the porous carbon fibers. The fabricated porous carbon fiber has high specific surface area and high capacitance, thereby being favorably applicable in manufacturing electrodes for a super capacitor, fuel cell, etc.

    摘要翻译: 公开了一种多孔碳纤维的制造方法。 更具体地说,制造多孔碳纤维的方法包括以下步骤:加工淀粉以制备胶凝淀粉溶液; 向凝胶状淀粉溶液中加入有机酸以制备淀粉溶液; 将碳纳米管溶解在溶剂中,并向其中加入纤维成形性聚合物以制备碳纳米管/纤维可成形聚合物溶液; 将淀粉溶液与由上述步骤获得的碳纳米管/纤维可成形聚合物溶液混合,以制备碳纳米管/淀粉/纤维可成形聚合物溶液; 电纺或湿式纺丝制备的碳纳米管/淀粉/纤维成型聚合物溶液以生产淀粉复合纤维; 氧化加热淀粉复合纤维,然后进行加热纤维的碳化和真空热处理,以制造多孔碳纤维。 制造的多孔碳纤维具有高比表面积和高电容,因此适用于制造用于超级电容器,燃料电池等的电极。

    Fabrication method of composite carbon nanotube fibers/yarns
    9.
    发明授权
    Fabrication method of composite carbon nanotube fibers/yarns 有权
    复合碳纳米管纤维/纱线的制造方法

    公开(公告)号:US09340904B2

    公开(公告)日:2016-05-17

    申请号:US13814448

    申请日:2011-08-11

    摘要: The present invention provides a method of making a carbon nanotubes fiber by providing a polyethylene terephthalate substrate; contacting the polyethylene terephthalate substrate with a polyvinyl alcohol polymer solution to form a polyvinyl alcohol polymer layer on the polyethylene terephthalate substrate; contacting the polyvinyl alcohol polymer layer with a carbon nanotube solution, wherein the carbon nanotubes solution comprises one or more carbon nanotubes; forming a nanotube layer on the polyvinyl alcohol polymer layer; delaminating the polyvinyl alcohol polymer layer from the polyethylene terephthalate substrate to release a composite fiber layer; stretching the composite fiber layer; and drying the composite fiber layer.

    摘要翻译: 本发明提供一种通过提供聚对苯二甲酸乙二醇酯基材制造碳纳米管纤维的方法; 使聚对苯二甲酸乙二醇酯基材与聚乙烯醇聚合物溶液接触,以在聚对苯二甲酸乙二醇酯基材上形成聚乙烯醇聚合 使所述聚乙烯醇聚合物层与碳纳米管溶液接触,其中所述碳纳米管溶液包含一个或多个碳纳米管; 在聚乙烯醇聚合物层上形成纳米管层; 从聚对苯二甲酸乙二醇酯基材分层聚乙烯醇聚合物层以释放复合纤维层; 拉伸复合纤维层; 并干燥复合纤维层。

    Fabrication Method of Composite Carbon Nanotube Fibers/Yarns
    10.
    发明申请
    Fabrication Method of Composite Carbon Nanotube Fibers/Yarns 有权
    复合碳纳米管纤维/纱线的制备方法

    公开(公告)号:US20130302605A1

    公开(公告)日:2013-11-14

    申请号:US13814448

    申请日:2011-08-11

    摘要: The present invention provides a method of making a carbon nanotubes fiber by providing a polyethylene terephthalate substrate; contacting the polyethylene terephthalate substrate with a polyvinyl alcohol polymer solution to form a polyvinyl alcohol polymer layer on the polyethylene terephthalate substrate; contacting the polyvinyl alcohol polymer layer with a carbon nanotube solution, wherein the carbon nanotubes solution comprises one or more carbon nanotubes; forming a nanotube layer on the polyvinyl alcohol polymer layer; delaminating the polyvinyl alcohol polymer layer from the polyethylene terephthalate substrate to release a composite fiber layer; stretching the composite fiber layer; and drying the composite fiber layer.

    摘要翻译: 本发明提供一种通过提供聚对苯二甲酸乙二醇酯基材制造碳纳米管纤维的方法; 使聚对苯二甲酸乙二醇酯基材与聚乙烯醇聚合物溶液接触,以在聚对苯二甲酸乙二醇酯基材上形成聚乙烯醇聚合 使所述聚乙烯醇聚合物层与碳纳米管溶液接触,其中所述碳纳米管溶液包含一个或多个碳纳米管; 在聚乙烯醇聚合物层上形成纳米管层; 从聚对苯二甲酸乙二醇酯基材分层聚乙烯醇聚合物层以释放复合纤维层; 拉伸复合纤维层; 并干燥复合纤维层。