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    • 1. 发明专利
    • Boron carbide-silicon carbide composite ceramic and method for producing the same
    • 硼碳化硅碳化物复合陶瓷及其制造方法
    • JP2011063453A
    • 2011-03-31
    • JP2009213306
    • 2009-09-15
    • Mino Ceramic Co LtdNational Institute Of Advanced Industrial Science & Technology独立行政法人産業技術総合研究所美濃窯業株式会社
    • KUMAZAWA TAKESHISEKINE YOSHIHITOKITAGUCHI DANIEL YUKICHIYOSHIZAWA YUICHIMIYAZAKI HIROYUKISHU YUHIUGA HIDEKI
    • C04B35/563C04B35/565
    • PROBLEM TO BE SOLVED: To provide a boron carbide-based ceramic where a fracture toughness value being a problem when used as a structural material is improved without significantly losing high specific rigidity possessed essentially by a boron carbide ceramic, where comparatively high strength is maintained and where reliability is satisfied when used for usage moving at a high speed.
      SOLUTION: There are a boron carbide-silicon carbide composite ceramic having a bending strength at room temperature of 200 MPa or more, a fracture toughness value of 2.5 MPa*m
      0.5 or more, a specific rigidity value of 150-180 GPa*cm
      3 /g, a composition where at least the content of boron carbide is more than 50 mass%, the content of silicon carbide is less than 50 mass%, the total content of free carbon and other components is 3 mass% or less and the content of aluminum which is one of other components is 1 mass% or less and an average particle diameter of particles in the ceramic of 20 μm or less, and a method for producing the boron carbide-silicon carbide composite ceramic.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种碳化硼系陶瓷,其中当用作结构材料时,断裂韧性值是有问题的,而不会显着丧失基本上由碳化硼陶瓷所具有的高比刚度,其中相对高的强度 并且当用于高速移动时的可靠性得到满足。 解决方案:具有在室温下的弯曲强度为200MPa以上,断裂韧性值为2.5MPa * m以上的碳化硼 - 碳化硅复合陶瓷,特别是具有 刚性值为150-180GPa * cm 3 / SP / g,其中至少碳化硼含量大于50质量%,碳化硅含量小于50质量%的组成, 游离碳和其他成分的总含量为3质量%以下,作为其他成分之一的铝的含量为1质量%以下,陶瓷中的粒子的平均粒径为20μm以下, 用于生产碳化硼 - 碳化硅复合陶瓷。 版权所有(C)2011,JPO&INPIT