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Pantograph slide composite material and preparation method thereof

A technology of pantograph slides and composite materials, which is applied in metal material coating technology, liquid chemical plating, coating, etc., can solve the problems of low interface bonding strength and poor wettability, and achieve good interface bonding performance and microstructure High density and good mechanical properties

Inactive Publication Date: 2011-10-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of poor interfacial wettability and low interfacial bonding strength between the ceramic reinforcement phase and copper in the existing copper-based pantograph slide composite material, and the present invention provides a pantograph slide composite material and its preparation method

Method used

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  • Pantograph slide composite material and preparation method thereof
  • Pantograph slide composite material and preparation method thereof
  • Pantograph slide composite material and preparation method thereof

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specific Embodiment approach 1

[0017] Embodiment 1: This embodiment is a pantograph slider composite material, which is made of 60% to 90% copper powder and 10% to 40% ceramic particles by volume percentage, wherein the ceramic The particle surface has an electroless copper plating layer.

[0018] In this embodiment, ceramic particles with an electroless copper plating layer on the surface are used as raw materials, and the pantograph slider composite material prepared by mixing with copper powder has high tissue density, good interface bonding performance, and internal Ti 3 AlC 2 The ceramic particles are evenly distributed, the density reaches 99.86%-100.79%, the hardness reaches 92.3HB-93.3HB, the mechanical properties are good, the tensile strength reaches 230-300MPa, and the friction coefficient is 0.15-0.4.

[0019]Relatively high, with the increase of pressure, the change of friction coefficient is not obvious, when the pressure is 12.5MPa, the friction coefficient is the lowest. The density of the...

specific Embodiment approach 2

[0020] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the ceramic particles are Ti 3 AlC 2 Ceramic particles, Ti 3 SiC 2 Ceramic particles or Ti 2 AlC ceramic particles. Other parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0021] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the pantograph slider composite material is made of 70% copper powder and 30% ceramic particles by volume. Other parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

A pantograph slide composite material and a preparation method thereof relate to a copper-based pantograph slide composite material and a preparation method thereof. The invention solves the problems of poor interfacial wettability and low interfacial bonding strength between a ceramic reinforced phase and coppor in existing copper-based pantograph slide composite materials. The composite material of the invention is prepared by copper powder and ceramic particles, wherein the surface of the ceramic particle has a chemical copper plate layer. A mixed material is obtained by mixing the ceramic particles with chemical copper plate layers on the surfaces and the copper powder, and then the mixed material is processed by a hot-pressing sintering process or a combined process of hot-pressing sintering and hot extrusion. The Ti3AlC2 ceramic particles inside the composite material have uniform distribution, high structure density, good interfacial bonding performance, and good mechanical properties; the density is up to 99.86%-100.79%; the hardness is up to 92.3-93.3 HB; the tensile strength is up to 230-300 MPa; and the friction coefficient is 0.15-0.4.

Description

technical field [0001] The invention relates to a copper-based pantograph sliding plate composite material and a preparation method thereof. Background technique [0002] The development trend of railway transportation in the world today is electrification and high speed. With the advent of my country's high-speed railway era, my country's electrified railway has also entered a temporary new period, which requires the emergence of new and high-demand pantograph slides. At present, high-performance pantograph slides are required to have good self-lubrication, wear resistance, electrical conductivity, impact toughness, compressive strength, and bending strength. However, due to the late start of research and development of pantographs in my country and insufficient investment, high-performance pantograph slides are mainly imported. The pantograph slides currently used are mainly divided into impregnated metal slides, pure carbon slides, and powder metallurgy slides. But eac...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/05C23C18/40
Inventor 王桂松王虎伟
Owner HARBIN INST OF TECH
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