Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method and application for aluminum-silicon carbide composite material
The invention belongs to the field of material preparation, and discloses a preparation method for an aluminum-silicon carbide composite material. The preparation method comprises the steps of: 1) uniformly mixing silicon carbide particles with different particle sizes, adding a binder and a dispersant, and carrying out secondary mixing so as to prepare a raw material; 2) carrying out compressionmolding on the raw material so as to prepare a silicon carbide ceramic preform; 3) sintering the silicon carbide ceramic preform so as to form porous ceramic; and 4) under the inert gas atmosphere, heating aluminum alloy to be molten, and pressing molten aluminum alloy into the porous ceramic in an inert gas pressurizing mode for molding so as to obtain the aluminum-silicon carbide composite material, wherein the silicon carbide particles with different particle sizes in the step (1) comprise the following components in percentages by weight: 5-15% of silicon carbide particles with a particlesize of 1 [mu]m, 15-20% of silicon carbide particles with a particle size of 5 [mu]m and 20-30% of silicon carbide particles with a particle size of 15 [mu]m, with the balance being silicon carbide particles with a particle size of 35 [mu]m. The aluminum-silicon carbide composite material provided by the invention has excellent properties like proper thermal expansion coefficient, high elasticitymodulus and high thermal conductivity, and is applicable to a structure body of a platform body of an inertial navigation system.
本发明属于材料制备领域，公开了一种铝碳化硅复合材料的制备方法，包括以下步骤：1)将不同粒径的碳化硅颗粒进行混匀，加入粘结剂、分散剂，进行二次混料，制得原料；2)将原料压制成型，制备出碳化硅陶瓷预制体；3)将碳化硅陶瓷预制体进行烧结，形成多孔陶瓷；4)在惰性气体气氛下，将铝合金加热至融化后，通过惰性气体加压的方式压入多孔陶瓷内部成型，得到铝碳化硅复合材料。其中，步骤1)中的不同粒径的碳化硅颗粒的重量百分比为：1μm碳化硅颗粒5～15％、5μm碳化硅颗粒15～20％、15μm碳化硅颗粒20～30％、其余为35μm碳化硅颗粒。所述铝碳化硅复合材料具有适宜热膨胀系数、高弹性模量、高导热率等优良的性能，适用于惯导系统台体结构体。
Preparation method and application for aluminum-silicon carbide composite material
The invention belongs to the field of material preparation, and discloses a preparation method for an aluminum-silicon carbide composite material. The preparation method comprises the steps of: 1) uniformly mixing silicon carbide particles with different particle sizes, adding a binder and a dispersant, and carrying out secondary mixing so as to prepare a raw material; 2) carrying out compressionmolding on the raw material so as to prepare a silicon carbide ceramic preform; 3) sintering the silicon carbide ceramic preform so as to form porous ceramic; and 4) under the inert gas atmosphere, heating aluminum alloy to be molten, and pressing molten aluminum alloy into the porous ceramic in an inert gas pressurizing mode for molding so as to obtain the aluminum-silicon carbide composite material, wherein the silicon carbide particles with different particle sizes in the step (1) comprise the following components in percentages by weight: 5-15% of silicon carbide particles with a particlesize of 1 [mu]m, 15-20% of silicon carbide particles with a particle size of 5 [mu]m and 20-30% of silicon carbide particles with a particle size of 15 [mu]m, with the balance being silicon carbide particles with a particle size of 35 [mu]m. The aluminum-silicon carbide composite material provided by the invention has excellent properties like proper thermal expansion coefficient, high elasticitymodulus and high thermal conductivity, and is applicable to a structure body of a platform body of an inertial navigation system.
本发明属于材料制备领域，公开了一种铝碳化硅复合材料的制备方法，包括以下步骤：1)将不同粒径的碳化硅颗粒进行混匀，加入粘结剂、分散剂，进行二次混料，制得原料；2)将原料压制成型，制备出碳化硅陶瓷预制体；3)将碳化硅陶瓷预制体进行烧结，形成多孔陶瓷；4)在惰性气体气氛下，将铝合金加热至融化后，通过惰性气体加压的方式压入多孔陶瓷内部成型，得到铝碳化硅复合材料。其中，步骤1)中的不同粒径的碳化硅颗粒的重量百分比为：1μm碳化硅颗粒5～15％、5μm碳化硅颗粒15～20％、15μm碳化硅颗粒20～30％、其余为35μm碳化硅颗粒。所述铝碳化硅复合材料具有适宜热膨胀系数、高弹性模量、高导热率等优良的性能，适用于惯导系统台体结构体。
Preparation method and application for aluminum-silicon carbide composite material
一种铝碳化硅复合材料的制备方法及其应用
ZHAO NAN (Autor:in) / DENG HONGLUN (Autor:in) / PAN HAIPING (Autor:in)
12.05.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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