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Tin titanium carbide granule reinforced copper base composite material and its preparation method

A copper-based composite material, tin titanium carbide technology, applied in the field of metal-based composite materials, can solve the problems of poor high temperature resistance, single performance, poor self-lubricating performance, etc., and achieve the effect of wide application range and high electrical conductivity

Inactive Publication Date: 2003-04-16
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the strength and modulus of copper-based composite materials using oxide ceramic particles as the reinforcing phase are significantly improved, but the disadvantage is that the electrical conductivity decreases with the increase in the amount of oxide particles added.
Among them, Document 2 points out that the maximum service temperature of graphite is 600°C, and Documents 1 and 2 point out that WS 2 The maximum service temperature in air is 430°C, and it can reach 600°C in vacuum. It can be seen that its high temperature resistance is poor; in addition, the use of ordinary carbides such as TiC as a reinforcing phase can increase the strength while making the conductivity The performance is not reduced much, but its self-lubricating performance is poor
The disadvantage of the above-mentioned particle-reinforced copper-based composite material is that the performance is relatively single. Therefore, the preparation of a copper-based composite material with comprehensive properties will have a wider range of applications, and the selection of a suitable particle reinforcement is very important. Currently, tin Titanium carbide (Ti 2 SnC) is the composite material of reinforcing phase, there is no such report

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] According to Cu-5vol% (volume percent) Ti 2 Composite materials made of SnC: Ti 2 SnC particles and Cu powder were ball milled for 10 hours according to the above ratio to make them evenly mixed, then put them into a graphite mold, and hot-pressed and sintered under the protection of argon at a temperature of 850 ° C, a pressure of 30 MPa, and a sintering time of 30 minutes to obtain Cu-5vol% Ti 2 SnC composite material; after testing, the tensile yield strength of the obtained composite material is 220MPa, the tensile breaking strength is 360MPa, the elongation is 25%, the friction coefficient is 0.4, and the resistivity is 11nΩ·M.

Embodiment 2

[0016] According to Cu-20vol% (volume percent) Ti 2 Composite materials made of SnC: Ti 2 SnC particles and Cu powder were ball-milled for 10 hours according to the above ratio to make them evenly mixed, and then put into a graphite mold and sintered by hot isostatic pressing under the protection of argon at a temperature of 820°C, a pressure of 50 MPa, and a sintering time of 40 minutes to obtain Cu- 20vol%Ti 2 SnC composite material; after testing, the tensile yield strength of the obtained composite material is 310MPa, the tensile breaking strength is 439MPa, the elongation is 12%, the friction coefficient is 0.2, and the resistivity is 44nΩ·M.

Embodiment 3

[0018] According to Cu-50vol% (volume percent) Ti 2 Composite materials made of SnC: Ti 2 SnC particles and Cu powder were ball milled for 10 hours according to the above ratio to make them evenly mixed, then put into graphite mold, and sintered by hot isostatic pressing under vacuum at a temperature of 900°C, a pressure of 20MPa, and a sintering time of 90 minutes to obtain Cu-50vol% Ti 2 SnC composite material; after testing, the tensile yield strength of the obtained composite material is 280MPa, the tensile breaking strength is 400MPa, the elongation is 5%, the friction coefficient is 0.2, and the resistivity is 50nΩ·M.

[0019] The test result of embodiment shows: the obtained Ti of the present invention 2 SnC particles reinforced Cu-based composites have good mechanical properties, electrical properties and friction properties.

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Abstract

The invented composite material consists of wild phase of Ti2SnC granule and copper base with percentage of volume as 5-50%. The preparing procedures are as follows. The Ti2SnC granule and Cu powder are mixed evenly by use of physical and mechanical method. Then, under condition of vacuum or in protection of inert gases, the sinter of hot pressing or sinter of isostatic pressing in temperature at750-900 deg.C, pressure at 20-50 MPa and agglomeration time as 0.5-2 hr. carries out to obtain the composite material. The prepared composite material possesses the synthetical capabilities of high intensity, high electrical conductivity, high temperature resistant and self lubricating.

Description

technical field [0001] The invention relates to a metal-based composite material, in particular to a tin-titanium carbide particle-reinforced copper-based composite material and a preparation method thereof. Background technique [0002] Particle-reinforced copper-based composites can have both the high strength of the particle-reinforced phase and the good electrical and thermal conductivity of the copper matrix, and have broad application prospects in the fields of electronics, electromechanical, and aviation. At present, the strength and modulus of copper-based composite materials using oxide ceramic particles as a reinforcing phase are significantly improved, but the disadvantage is that the electrical conductivity decreases with the increase of the amount of oxide particles added. [0003] Using layered graphite, WS 2 、MoS 2 As a reinforcing phase, it can increase the strength and make the composite material have self-lubricating properties. Document 1 (Wear, 22 (1972...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C32/00
Inventor 周延春阎程科
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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