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Copper-based cu/c/ni/tib 2 Preparation method of composite material

A composite material and copper-based technology, which is applied in the field of copper-based graphite composite materials, can solve problems such as slide plate breakage, and achieve the effects of less electrical conductivity loss, good air tightness, and enhanced order and orientation

Active Publication Date: 2020-02-11
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the invention is to provide a copper-based Cu / C / Ni / TiB 2 The preparation method of the composite material, the composite material obtained has excellent mechanical properties, wear resistance and electrical conductivity, and solves the problem that the graphite skateboard encounters hard points of the wires in the natural environment and easily causes the skateboard to break

Method used

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  • Copper-based cu/c/ni/tib <sub>2</sub> Preparation method of composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Put the mixture of high-purity 300-mesh copper powder and high-purity flake graphite into the grinding jar, the mass fraction of C in the mixture of copper powder and flake graphite is 1%, and add a magnetic stainless steel needle of 0.5 × 5mm as a grinding The mass ratio of the body, the mixture of copper powder and flake graphite to the magnetic stainless steel needle is 1:35, and the Ar gas (shielding gas) is introduced to seal the grinding jar, and the grinding jar is placed in a device that uses a magnetic field above the plane to transform the space Grind for 20 minutes, pass through cooling water to cool the whole process, and then separate the steel needles through a 200-mesh sieve to obtain Cu / C composite powder;

[0044] (2) Put the high-purity Ni powder into the grinding tank, add a 0.5×5mm magnetic stainless steel needle as a grinding body, the mass ratio of Ni powder to magnetic stainless steel needle is 1:40, add ethanol solution to immerse the Ni powde...

Embodiment 2

[0050] (1) Put the mixture of high-purity 300-mesh copper powder and high-purity flake graphite into a grinding jar, the mass fraction of C in the mixture of copper powder and flake graphite is 3%, add a magnetic stainless steel needle of 0.5 × 5mm as a grinding Body, the mixture of copper powder and flake graphite and the mass ratio of magnetic stainless steel needles are 1:40, and the Ar gas (shielding gas) is introduced to seal the grinding jar, and the grinding jar is placed in a device that uses a magnetic field above the plane to transform the space Grind for 30 minutes, pass cooling water into the whole process to cool, and then separate the steel needles through a 200-mesh sieve to obtain Cu / C composite powder;

[0051] (2) Put the high-purity Ni powder into the grinding tank, add a 0.5×5mm magnetic stainless steel needle as the grinding body, the mass ratio of Ni powder to magnetic stainless steel needle is 1:35, add ethanol solution to immerse the Ni powder, and pass ...

Embodiment 3

[0057] (1) Put the mixture of high-purity 300-mesh copper powder and high-purity flake graphite into the grinding jar, the mass fraction of C in the mixture of copper powder and flake graphite is 2%, add a magnetic stainless steel needle of 0.5 × 5mm as a grinding The mass ratio of the body, the mixture of copper powder and flake graphite to the magnetic stainless steel needle is 1:37, and the Ar gas (shielding gas) is introduced to seal the grinding jar, and the grinding jar is placed in a device that uses a magnetic field above the plane to transform the space Grind for 26 minutes, pass cooling water into the whole process to cool, and then separate the steel needles through a 300-mesh sieve to obtain Cu / C composite powder;

[0058] (2) Put the high-purity Ni powder into the grinding tank, add a 0.5×5mm magnetic stainless steel needle as the grinding body, the mass ratio of Ni powder to magnetic stainless steel needle is 1:37, add ethanol solution to immerse the Ni powder, an...

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Abstract

The invention belongs to the technical field of copper-based graphite composite materials, in particular to a copper-based Cu / C / Ni / TiB 2 Methods of preparation of composite materials. Grinding the mixture of copper powder and flake graphite to obtain Cu / C composite powder; grinding Ni powder to obtain ground Ni powder; preparing TiB by sol-gel method 2 Nano powder; Cu / C composite powder, ground Ni powder and TiB 2 Mix the nano powder and add absolute ethanol to obtain a composite solution; pour the composite solution into the suction filter funnel, and set two U-shaped permanent magnets with opposite magnetic properties on the outside of the lower part of the funnel, so that the composite solution will naturally settle under the action of a magnetic field , and then perform suction filtration and drying to obtain a composite powder; put the composite powder into a mold in a hot pressure furnace, and sinter it by hot pressing. The composite material prepared by the invention has excellent mechanical properties, wear resistance and electrical conductivity.

Description

technical field [0001] The invention belongs to the technical field of copper-based graphite composite materials, in particular to a copper-based Cu / C / Ni / TiB 2 Methods of preparation of composite materials. Background technique [0002] There is a common phenomenon in life: the attraction and repulsion between magnets. There are many examples of using the interaction between magnets in actual production, and maglev trains are the most typical. Magnetic levitation is a method of making objects float in the air, which is realized by the force between magnets instead of other mechanical methods. It works by creating an electromagnetic force that counteracts gravitational forces, allowing objects to float without being constrained by their own weight. The repulsive force is generated between the bogie and the train. This repulsive force is balanced with the gravity of the train itself. The train is floated to a certain height by the repulsive force of the magnet, and a certai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C32/00C22C1/05B22F9/04B22F1/00B22F3/14
Inventor 冯柳郑飞赵增典殷凤仕李念念
Owner SHANDONG UNIV OF TECH