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    • 52. 发明申请
    • MATERIAL HAVING A CONTROLLED MICROSTRUCTURE, CORE-SHELL MACROSTRUCTURE, AND METHOD FOR ITS FABRICATION
    • 具有控制微结构,核心结构的材料及其制造方法
    • US20080015103A1
    • 2008-01-17
    • US11775671
    • 2007-07-10
    • Walter LuscherJohn HellmannBarry ScheetzBrett Wilson
    • Walter LuscherJohn HellmannBarry ScheetzBrett Wilson
    • C04B38/00
    • C04B35/10C04B35/14C04B35/18C04B38/0025C04B38/0645C04B2111/343C04B38/007C04B41/0018
    • Disclosed is a method for making a material having a controlled microstructure, the method including providing particles of a ceramic mineral material, the particles having a metal oxide dopant therein. The particles of the ceramic mineral material are consolidated into larger aggregates of a size relevant to the desired application using standard industrial mixing and pelletizing technology. The aggregates are heated under reducing conditions so that at least part of the dopant is reduced to form a transient, metastable liquid phase among the particles. The liquid phase includes at least part of the reduced dopant and promotes sintering of the particles and forms islands of reduced metal within the material and on the surface of the aggregates. Following heating of the aggregates under reducing conditions, the aggregates are heated under oxidizing conditions such that the islands of reduced metal are oxidized and/or go into solid solution within the particles, thereby creating voids within and form a shell thereon the particles.
    • 公开了一种制备具有可控微结构的材料的方法,该方法包括提供陶瓷矿物材料的颗粒,其中具有金属氧化物掺杂剂的颗粒。 使用标准工业混合和造粒技术将陶瓷矿物材料的颗粒固结成与所需应用相关尺寸的较大聚集体。 聚集体在还原条件下加热,使得至少部分掺杂剂被还原以在颗粒之间形成瞬时的亚稳态液相。 液相包括至少部分还原的掺杂剂并且促进颗粒的烧结并且在材料内和聚集体的表面上形成还原金属的岛。 在还原条件下加热聚集体后,在氧化条件下加热聚集体,使得还原金属的岛被氧化和/或在颗粒内进入固溶体,由此在其上形成空隙并在其上形成壳。
    • 53. 发明授权
    • Process for producing carbon heat generator
    • 碳热发生器生产工艺
    • US4863649A
    • 1989-09-05
    • US150333
    • 1988-01-29
    • Takamasa KawakuboTakao Koyama
    • Takamasa KawakuboTakao Koyama
    • C04B35/52C04B35/532C04B41/00
    • C04B35/522C04B35/52C04B35/532C04B41/0018C04B41/009
    • A process for producing a carbon heat generator is disclosed including the steps of uniformly dispersing one or more types of metal compounds capable of forming a vitreous film upon oxidation in a moldable composition, molding the resultant dispersed composition, precarbonizing the molded composition, and then carbonizing the composition in a nonoxidative atmosphere to form a carbon heat generator having an oxidation preventive glass film. The oxidation of the metal compound exposed on the surface of the molded composition by the use of an oxidative atmosphere forms a vitreous film which prevents oxygen from diffusing in the interior thereof. The film so produced can form a new glass film on a damaged portion by a self-recovery effect if a pinhole or a crack occurs in the glass film. Thus, the process does not cause external appearance and weight differences before and after heat generating.
    • 公开了一种生产碳热发生器的方法,包括以下步骤:在可成型组合物中均匀分散能够形成玻璃膜的一种或多种类型的金属化合物氧化,模制所得分散组合物,预成型组合物碳化,然后碳化 该组合物在非氧化气氛中形成具有防氧化玻璃膜的碳热发生器。 通过使用氧化性气氛在模塑组合物的表面上暴露的金属化合物的氧化形成玻璃膜,其防止氧在其内部扩散。 如果在玻璃膜中发生针孔或龟裂,则如此制造的膜可以通过自恢复效果在损伤部分上形成新的玻璃膜。 因此,该方法不会在发热之前和之后引起外观和重量差异。