A method for preparing copper-based titanium carbide composite materials by in-situ reaction

A copper-based titanium carbide, in-situ reaction technology, applied in the field of metal composite material preparation, can solve the problems of high cost, easy introduction of impurities, unstable performance, etc., and achieve the effects of reducing production cost, simplifying preparation process, and excellent physical properties.

Active Publication Date: 2022-05-17
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for preparing copper-based titanium carbide composite materials by in-situ reaction to overcome technical problems such as high cost, unstable performance, and easy introduction of impurities in the preparation of copper-based titanium carbide composite materials in the prior art

Method used

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  • A method for preparing copper-based titanium carbide composite materials by in-situ reaction
  • A method for preparing copper-based titanium carbide composite materials by in-situ reaction
  • A method for preparing copper-based titanium carbide composite materials by in-situ reaction

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Experimental program
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Effect test

Embodiment 1

[0037](1) Weigh the electrolytic copper block and titanium sponge according to the mass ratio of 9:1, place them in a corundum crucible, transfer them to an electromagnetic induction furnace protected by 100mL / min argon, heat at 1300°C until the raw materials are in a molten state, and then keep warm After 30 minutes, the alloy liquid completed the alloying process, then the power of the electromagnetic induction furnace was turned off, and after natural cooling, the copper-titanium alloy ingot was taken out, and wire-cut into small pieces of copper-titanium alloy.

[0038] (2) Take copper-titanium alloy pieces and 200-mesh graphite particles (the molar ratio of titanium element in copper-titanium alloy to carbon element in graphite is 1), and evenly spread the weighed graphite particles on the bottom of corundum porcelain boat (laying The thickness is about 3mm), and then the copper-titanium alloy small pieces are evenly placed on the top of the graphite particles.

[0039] (...

Embodiment 2

[0044] (1) Weigh the electrolytic copper block and titanium sponge according to the mass ratio of 9:1, place them in a corundum crucible, transfer them to an electromagnetic induction furnace protected by 100mL / min argon, heat at 1300°C until the raw materials are in a molten state, and then keep warm After 30 minutes, the alloy liquid completed the alloying process, then the power of the electromagnetic induction furnace was turned off, and after natural cooling, the copper-titanium alloy ingot was taken out, and wire-cut into small pieces of copper-titanium alloy.

[0045] (2) Weigh copper-titanium alloy pieces and 200-mesh graphite particles (the molar ratio of titanium in copper-titanium alloy to carbon in graphite is 1.6), and evenly spread the weighed graphite particles in the mold of the required shape , and then evenly place the small pieces of copper-titanium alloy on the top of the graphite particles.

[0046] (3) The mold with copper-titanium alloy nubs and graphite...

Embodiment 3

[0049] (1) Weigh the electrolytic copper block and titanium sponge according to the mass ratio of 9:1, place them in a corundum crucible, transfer them to an electromagnetic induction furnace protected by 100mL / min argon, heat at 1300°C until the raw materials are in a molten state, and then keep warm After 30 minutes, the alloy liquid completes the alloying process, and then the power supply of the electromagnetic induction furnace is turned off to obtain the copper-titanium alloy liquid.

[0050] (2) The copper-titanium alloy liquid is poured onto 200-mesh graphite particles (the molar ratio of the titanium element in the copper-titanium alloy to the carbon element in the graphite is 1) to obtain an alloy mixture, and the alloy mixture is placed in a mold of a desired shape.

[0051] (3) The mold containing the alloy mixture was placed in a horizontal furnace at 1300°C with an argon flow rate of 100mL / min, then kept for 240min, and then figure 2 The temperature program was ...

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Abstract

The invention relates to the field of metal composite material preparation, in particular to a method for preparing copper-based titanium carbide composite material by in-situ reaction. Specifically, copper-titanium alloy is prepared by melting copper block and titanium sponge as raw materials, and then copper-based titanium carbide composite material is obtained through in-situ reaction between copper-titanium alloy and graphite particles. The copper-based titanium carbide composite material prepared by the present invention has relatively excellent physical properties: the bending strength is close to 1100MPa, and the electrical conductivity is 6.2×10 6 S / m, Vickers hardness close to 200HV. Compared with the high-temperature self-propagating method, the matrix and titanium carbide have good interfacial bonding ability, and the use of bulk raw materials can make the present invention have lower production cost and higher product density; compared with the external addition method, the The external generation step of titanium carbide is eliminated, the production cost and production difficulty are greatly reduced, and the introduction of impurity elements is avoided.

Description

technical field [0001] The invention relates to the field of metal composite material preparation, in particular to a method for preparing copper-based titanium carbide composite material by in-situ reaction. Background technique [0002] Due to the high electrical conductivity of copper, copper-based composite materials have been widely used in the field of electrothermal materials, especially as electrode materials. However, due to the low melting point of copper, it is easy to deform during use and has poor durability. To solve this problem, ceramic phase reinforced metal matrix composites are increasingly used as electrode materials, especially titanium carbide reinforced copper matrix composites. The reason for choosing titanium carbide as the reinforcing phase is its high hardness, corrosion resistance in acidic environment, high melting point, good thermal stability, and electrical conductivity close to that of metal. The researchers found that the composite materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C1/02C22C9/00
CPCC22C1/1036C22C9/00Y02E60/36
Inventor 郭磊郭占成杨洋
Owner UNIV OF SCI & TECH BEIJING
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