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    • 10. 发明专利
    • Composite material and manufacturing method therefor
    • 复合材料及其制造方法
    • JP2003073756A
    • 2003-03-12
    • JP2001256292
    • 2001-08-27
    • Toyota Industries Corp株式会社豊田自動織機
    • TANAKA KATSUAKIKINOSHITA KYOICHISUGIYAMA TOMOHEIYOSHIDA TAKASHIKONO EIJI
    • C22C1/10
    • C22C1/1036C22C2001/1057
    • PROBLEM TO BE SOLVED: To provide a method for manufacturing a composite material having excellent low thermal expansibility.
      SOLUTION: The method for manufacturing the composite material is characterized by having a filling step of filling a SiC powder in dies as a dispersion material, a preheating step of preheating the dies to a reaction initiation temperature or higher, at which a molten metal of a matrix metal containing Al as a main component and SiC particles start the reaction, and a teeming process of teeming the molten metal of the matrix metal having a temperature equal to or higher than the reaction initiation temperature, into the dies after the filling process and the preheating process, pressurizing it, and impregnating the molten metal among the SiC powders. The molten metal temperature and the preheating temperature, both of which are made to be equal to or higher than the reaction initiation temperature, make the substance with low thermal expansibility crystallize or generate, to provide the composite material with low thermal expansibility, without greatly reducing thermal conductivity. The composite material is particularly suitable for a heat sink member for electronic instruments.
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:提供具有优异的低热膨胀性的复合材料的制造方法。 解决方案:复合材料的制造方法的特征在于具有将SiC粉末填充在作为分散材料的模具中的填充工序,预热模具的反应开始温度以上的预热工序, 以Al为主成分的基质金属和SiC粒子开始反应,并且将具有等于或高于反应引发温度的基体金属的熔融金属浇注到填充过程之后的模具中, 预热过程,对其进行加压,以及在SiC粉末中浸渍熔融金属。 熔融金属温度和预热温度均等于或高于反应开始温度,使得具有低热膨胀性的物质结晶或产生,以提供具有低热膨胀性的复合材料,而不会大大降低 导热系数。 复合材料特别适用于电子仪器的散热构件。