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    • 4. 发明授权
    • Inorganic fiber-reinforced ceramic composite material
    • 无机纤维增强陶瓷复合材料
    • US4618529A
    • 1986-10-21
    • US725128
    • 1985-04-19
    • Takemi YamamuraMasahiro TokuseYoshiharu Waku
    • Takemi YamamuraMasahiro TokuseYoshiharu Waku
    • C03C14/00C04B35/80D03D3/00
    • C04B35/80C03C14/002C03C2214/02C03C2214/20Y10T428/2918Y10T428/30Y10T442/3195Y10T442/3309Y10T442/67
    • An inorganic fiber-reinforced ceramic composite material comprising a matrix of a ceramic and inorganic fibers as a reinforcing material, characterized in that(a) the inorganic fibers are specified inorganic fibers containing silicon, either titanium or zirconium, carbon and oxygen,(b) the ceramic is at least one material selected from the group consisting of carbides, nitrides, oxides, glass ceramics, graphite and specified inorganic materials containing silicon, either titanium or zirconium, carbon and oxygen,(c) the inorganic fibers have an initial reaction degradation speed of not more than 0.35 kg/mm.sup.2.sec.sup.-1 and a tenacity reduction ratio of not more than 40% during the production of the composite material,(d) the composite material has a critical stress intensity factor about 2 to 7 times as high as that of said matrix alone, and(e) the composite material has a bending strength reduction ratio, measured by a thermal shock fracture resistance measuring method, of not more than about 10% after it is heat-treated in air at 800.degree. to 1300.degree. C., immediately then dipped in water at room temperature, and then dried.
    • 1.一种无机纤维增强陶瓷复合材料,其特征在于,包含陶瓷基体和无机纤维​​作为增强材料,其特征在于,(a)所述无机纤维是指含有钛或锆,碳和氧的硅的规定的无机纤维,(b) 陶瓷是选自碳化物,氮化物,氧化物,玻璃陶瓷,石墨和含硅,钛或锆,碳和氧的指定无机材料中的至少一种材料,(c)无机纤维具有初始反应降解 速度不超过0.35kg / mm2.sec-1,在复合材料生产过程中强度降低率不超过40%,(d)复合材料具有约2至7倍的临界应力强度因子 (e)复合材料具有通过耐热冲击断裂电阻测定法测定的弯曲强度降低率不大于 在空气中在800〜1300℃下热处理后约10%,立即在室温下浸渍在水中,然后干燥。
    • 9. 发明授权
    • Water soluble cores, process for producing them and process for die
casting metal using them
    • 水溶性芯,其制造方法和使用它们的压铸金属的工艺
    • US5127461A
    • 1992-07-07
    • US603843
    • 1990-10-29
    • Kenji MatsunagaMichiyuki SuzukiMasahiro Tokuse
    • Kenji MatsunagaMichiyuki SuzukiMasahiro Tokuse
    • B22C1/02B22C1/18B22C9/10B22C9/12
    • B22C9/105B22C1/18
    • Disclosed are water soluble core wherein a particulate refractory material is combined with a binding agent comprising Na.sub.2 CO.sub.3, Na.sub.2 O . NSiO.sub.2 where n is 0.5 to 4, and SiO.sub.2 as ingredients and a process for producing the water soluble core. The process comprises mixing the particulate refractory material with a water glass, casting the mixture of the particulate refractory material and the water glass, hardening the casting by CO.sub.2 gas, and calcining the casting at between 100.degree. C. and a temperature less than that of an endothermic peak of the water glass in differential thermal analysis. Also, a process for die casting a metal is disclosed using the water soluble core which process comprises pre-heating the water soluble core from a temperature of 300.degree. C. below a melting point of the metal to a temperature of the endothermic peak.
    • 公开了水溶性核心,其中颗粒耐火材料与包含Na 2 CO 3,Na 2 O的粘合剂组合。 NSiO 2,其中n为0.5至4,SiO 2为成分,以及制备水溶性核的方法。 该方法包括将颗粒状耐火材料与水玻璃混合,铸造颗粒状耐火材料和水玻璃的混合物,用CO 2气体硬化铸件,并在100℃和低于 差热分析中水玻璃的吸热峰。 此外,使用水溶性核心公开了压铸金属的方法,该方法包括将水溶性核心在低于金属熔点的300℃的温度下预热至吸热峰的温度。