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  • Ball Milling
    by thermal annealing. Essentially the method consists of placing graphite powder (99.8% purity) into a stainless steel container along with four hardened steel balls. The container is purged, and argon is introduced. The milling is carried out at room temperature for up to 150 hours. Following milling
  • U.S. and International Fuel Cell Patents | December 2006 | FCT | 7MS.com
    for producing graphite powder with an increased bulk density, Michael Spahr, Davide Cattaneo, and Klaus Streb, Timcal AG (CH). U.S. 7,115,233 (20061003), Reformer, Tatsunori Okada, Kenji Kawaguchi, and Hideo Ichimura, Mitsubishi Denki Kabushiki Kaisha (JP). U.S. 7,115,244 (20061003), Hydrogen storage
  • U.S. Patents | December 2006 | A B T | 7MS.com
    7,115,221 (20061003), Method for producing graphite powder with an increased bulk density, Michael Spahr, Davide Cattaneo, and Klaus Streb, Timcal AG (CH). U.S. 7,115,233 (20061003), Reformer, Tatsunori Okada, Kenji Kawaguchi, and Hideo Ichimura, Mitsubishi Denki Kabushiki Kaisha (JP). U.S. 7,115,244
  • Porous-Metal Bearings
    as particle size of tin or copper powder in the mix decreases. Graphite additions result in growth but always lower the strength of the bearings. Lubricants used in the mix have only a slight influence on dimensional change, but a more pronounced effect on the apparent density and flow rate. After
  • Polyimide
    of graphite, boron, quartz, or organic materials. Molding compounds, on the other hand, contain discrete fibers such as chopped glass or asbestos, or particulate fillers such as graphite powders, MOS2, or PTFE. Polyimide films and wire enamels are generally unfilled. Coatings may be pigmented or filled
  • Metal-Matrix Composites
    excellent thermal conductivity, high shear strength, excellent abrasion resistance, high-temperature operation, nonflammability, minimal attack by fuels and solvents, and the ability to be formed and treated on conventional equipment. Aluminum MMCs are produced by casting, powder metallurgy, in situ
  • Metals and Ceramics
    bonding to create an adherent joint: These entail sintering molybdenum or tungsten powders to glassy phase-containing oxides. Often, bond-enhancing additives are used. The refractory metal powders simultaneously sinter both together and to the ceramic. The glassy phase in the ceramic will migrate

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