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SiC/Cu composite material and preparation method thereof

A technology of composite materials and mixed powders, which is applied in the preparation of SiC/Cu composite materials and in the field of SiC/Cu composite materials, can solve the problems of poor comprehensive performance and inability to meet the needs of use, so as to improve hardness and flexural strength, improve Wrapping effect, the effect of stabilizing comprehensive mechanical properties

Active Publication Date: 2015-01-21
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a SiC / Cu composite material to solve the problem that the existing SiC / Cu composite material has poor comprehensive performance and cannot meet the needs of use

Method used

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  • SiC/Cu composite material and preparation method thereof
  • SiC/Cu composite material and preparation method thereof
  • SiC/Cu composite material and preparation method thereof

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Embodiment 1

[0032] In the SiC / Cu composite material of this embodiment, the continuous phase is a glass phase, and SiC particles and Cu particles are uniformly wrapped in the glass phase. In the composite material, the volume ratio of SiC, Cu and the glass phase is 1:1:0.6; the composition of the glass phase is SiO 2 , B 2 o 3 and Na 2 O, SiO 2 , B 2 o 3 with Na 2 The mass ratio of O is 0.5:0.2:0.3; the density of the glass phase is 2.4g / cm 3 . The size of the SiC particles is 5-15 μm; the size of the Cu particles is 10-30 μm.

[0033] The preparation method of the SiC / Cu composite material of the present embodiment comprises the following steps:

[0034] 1) Grind and mix SiC powder and Cu powder evenly at a volume ratio of 1:1. After passing through a 200-mesh screen for 3 times, heat it to 200°C in a muffle furnace and keep it for 20 minutes to oxidize the surface of Cu particles to form a layer of Cu. 2 O, get mixed powder A;

[0035] 2) Use the sol-gel method to make the su...

Embodiment 2

[0044] In the SiC / Cu composite material of this embodiment, the continuous phase is a glass phase, and SiC particles and Cu particles are uniformly wrapped in the glass phase. In the composite material, the volume ratio of SiC, Cu and the glass phase is 1:1.5:0.4; the composition of the glass phase is SiO 2 , B 2 o 3 and Na 2 O, SiO 2 , B 2 o 3 with Na 2 The mass ratio of O is 0.5:0.3:0.2; the density of the glass phase is 2.3g / cm 3 . The size of the SiC particles is 5-15 μm; the size of the Cu particles is 10-30 μm.

[0045] The preparation method of the SiC / Cu composite material of the present embodiment comprises the following steps:

[0046] 1) Grind and mix SiC powder and Cu powder evenly at a volume ratio of 1:1.5. After passing through a 200-mesh screen for 3 times, heat it to 150°C in a muffle furnace and keep it warm for 30 minutes to oxidize the surface of Cu particles to form a layer of Cu. 2 O, get mixed powder A;

[0047] 2) Use the sol-gel method to ma...

Embodiment 3

[0052] In the SiC / Cu composite material of this embodiment, the continuous phase is a glass phase, and SiC particles and Cu particles are uniformly wrapped in the glass phase. In the composite material, the volume ratio of SiC, Cu and the glass phase is 1:0.5:0.1; the composition of the glass phase is SiO 2 , B 2 o 3 and Na 2 O, SiO 2 , B 2 o 3 with Na 2 The mass ratio of O is 0.5:0.1:0.4; the density of the glass phase is 2.5g / cm 3 . The size of the SiC particles is 5-15 μm; the size of the Cu particles is 10-30 μm.

[0053] The preparation method of the SiC / Cu composite material of the present embodiment comprises the following steps:

[0054] 1) Grind and mix SiC powder and Cu powder evenly at a volume ratio of 1:0.5. After passing through a 200-mesh screen for 3 times, heat it to 250°C in a muffle furnace and keep it warm for 30 minutes to oxidize the surface of Cu particles to form a layer of Cu. 2 O, get mixed powder A;

[0055] 2) Use the sol-gel method to ma...

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Abstract

The invention discloses a SiC / Cu composite material and a preparation method thereof. The continuous phase of the composite material is a glass phase, and SiC particles and Cu particles are uniform wrapped in the glass phase. The SiC / Cu composite material has the following advantages: the glass phase is filled between the SiC particles and the Cu particles, so the contact between the SiC particles and the Cu particles is avoided; and the low temperature glass phase forms interface layers on the surfaces of the SiC particles and the Cu particles, so the interface combination characteristic of the SiC / Cu composite material is effectively improved, the problems of non-wetting between a molten Cu phase and a SiC phase and easy interface reaction of the above two phases at a high temperature are solved, the interface bonding force is enhanced, and the hardness and the bending strength of the composite material are improved, thereby the composite material has good and stable comprehensive mechanical performances.

Description

technical field [0001] The invention belongs to the technical field of ceramic-metal composite materials, specifically relates to a SiC / Cu composite material, and also relates to a preparation method of the SiC / Cu composite material. Background technique [0002] The structure-function integrated SiC / Cu high-performance composite material is a new type of material with broad application prospects. However, due to the difference in the lattice types of SiC and Cu, there are a series of problems such as non-wetting and poor dispersion uniformity between the molten Cu and SiC phases, and interfacial reactions are prone to occur during the sintering process of the composite material, which seriously affects the SiC / SiC phase. Improvement of comprehensive properties of Cu composites. At present, there are a large number of literature studies on the interface modification of ceramic-metal composites to improve the interface bonding and dispersion uniformity of the silicon carbide...

Claims

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Application Information

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IPC IPC(8): C22C1/10C22C1/05C22C9/00C22C29/02C22C32/00C22C30/02
Inventor 张锐范冰冰邵刚王晨阳宋博震郭晓琴李春光孙冰高前程解亚军管可可
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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