Titanium nitride ceramic reinforced copper-based composite material and preparation method thereof

Abstract

The invention discloses a titanium nitride ceramic reinforced copper-based composite material and a preparation method thereof. Raw materials for the composite material comprise, by weight, titanium nitride, titanium oxide, a sintering aid and carbon black, wherein copper alloy is added into a perform. The preparation method comprises the following steps: carrying out heating, insulation, sintering and introduction of flowing nitrogen so as to obtain a porous titanium nitride perform with a porosity of 45 to 75%; preheating a die casting machine and heating the copper alloy until the copper alloy is molten; and dumping molten copper alloy liquid into a mold cavity in which the perform is disposed, pressing the molten copper alloy liquid into the porous titanium nitride perform by using a press, separating an ingot from a die after the ingot is cooled and carrying out heat treatment on the ingot so as to obtain the titanium nitride ceramic reinforced copper-based composite material. Particles in the titanium nitride ceramic reinforced copper-based composite material are mutually connected, and the composite material has the advantages of low density, high specific strength and specific stiffness, good wear resistance, excellent thermal conductivity and electroconductivity and a stable size and is extensively used in the industries like frictional wear structural members of mechanical and electrical special equipment, high temperature and corrosion resistant structural members of bearing special equipment, the aerospace industry and automobile manufacturing.

Description

technical field [0001] The invention relates to a ceramic reinforced metal matrix composite material and a preparation method thereof, in particular to a titanium nitride ceramic reinforced copper matrix composite material and a preparation method thereof. Background technique [0002] Particle-reinforced metal matrix composites are composite materials that combine the advantages of metal (toughness and plasticity) with the advantages of reinforced particles (high hardness and high modulus) by adding ceramic particle reinforcement phase or self-generated into the metal matrix. This kind of material has high specific strength, specific stiffness and high-temperature mechanical properties, low thermal expansion coefficient, good wear resistance and thermal conductivity, in addition, the cost of reinforcement is low, the microstructure is uniform, and the material is isotropic. It can be used Compared with fiber-reinforced and whisker-reinforced metal matrix composites, it has ...

AI Technical Summary

Problems solved by technology

[0009] At present, there are still some problems in the preparation of particle-reinforced metal matrix composites: (1) The volume fraction of particle-reinforced phase has a very important influence on the mechanical properties of composites

(3) Poor wettability between ceramic preform and molten metal liquid

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